./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --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_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/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 a6ea3567a534d80cc2c4496700797b4364bacf8f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:11:35,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:11:35,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:11:35,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:11:35,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:11:35,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:11:35,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:11:35,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:11:35,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:11:35,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:11:35,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:11:35,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:11:35,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:11:35,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:11:35,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:11:35,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:11:35,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:11:35,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:11:35,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:11:35,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:11:35,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:11:35,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:11:35,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:11:35,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:11:35,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:11:35,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:11:35,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:11:35,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:11:35,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:11:35,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:11:35,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:11:35,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:11:35,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:11:35,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:11:35,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:11:35,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:11:35,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:11:35,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:11:35,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:11:35,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:11:35,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:11:35,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:11:36,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:11:36,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:11:36,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:11:36,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:11:36,011 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:11:36,012 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:11:36,012 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:11:36,012 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:11:36,013 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:11:36,013 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:11:36,015 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:11:36,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:11:36,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:11:36,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:11:36,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:11:36,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:11:36,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:11:36,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:11:36,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:11:36,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:11:36,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:11:36,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:11:36,018 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:11:36,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:11:36,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:11:36,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:11:36,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:11:36,020 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:11:36,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:11:36,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:11:36,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:11:36,023 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:11:36,025 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:11:36,025 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_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6ea3567a534d80cc2c4496700797b4364bacf8f [2020-11-30 01:11:36,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:11:36,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:11:36,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:11:36,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:11:36,463 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:11:36,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2020-11-30 01:11:36,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/data/7db460515/cd6bce5abe614e38a1e8b290189a7366/FLAG809f72a62 [2020-11-30 01:11:37,281 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:11:37,284 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/sv-benchmarks/c/loop-invgen/nest-if3.i [2020-11-30 01:11:37,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/data/7db460515/cd6bce5abe614e38a1e8b290189a7366/FLAG809f72a62 [2020-11-30 01:11:37,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/data/7db460515/cd6bce5abe614e38a1e8b290189a7366 [2020-11-30 01:11:37,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:11:37,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:11:37,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:11:37,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:11:37,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:11:37,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:11:37" (1/1) ... [2020-11-30 01:11:37,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712fee55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:37, skipping insertion in model container [2020-11-30 01:11:37,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:11:37" (1/1) ... [2020-11-30 01:11:37,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:11:37,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:11:38,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:11:38,049 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:11:38,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:11:38,113 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:11:38,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38 WrapperNode [2020-11-30 01:11:38,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:11:38,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:11:38,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:11:38,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:11:38,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:11:38,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:11:38,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:11:38,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:11:38,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... [2020-11-30 01:11:38,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:11:38,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:11:38,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:11:38,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:11:38,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:11:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:11:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:11:38,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:11:38,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:11:38,907 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 01:11:38,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:11:38 BoogieIcfgContainer [2020-11-30 01:11:38,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:11:38,911 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:11:38,912 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:11:38,916 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:11:38,917 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:11:38,918 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:11:37" (1/3) ... [2020-11-30 01:11:38,919 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d283560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:11:38, skipping insertion in model container [2020-11-30 01:11:38,920 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:11:38,920 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:11:38" (2/3) ... [2020-11-30 01:11:38,920 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d283560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:11:38, skipping insertion in model container [2020-11-30 01:11:38,921 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:11:38,921 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:11:38" (3/3) ... [2020-11-30 01:11:38,924 INFO L373 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2020-11-30 01:11:39,014 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:11:39,014 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:11:39,015 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:11:39,015 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:11:39,015 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:11:39,015 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:11:39,015 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:11:39,015 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:11:39,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 01:11:39,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-30 01:11:39,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:11:39,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:11:39,075 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 01:11:39,075 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:11:39,075 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:11:39,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 01:11:39,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-30 01:11:39,080 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:11:39,080 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:11:39,081 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 01:11:39,081 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:11:39,091 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 13#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 4#L28true assume !!(main_~l~0 > 0); 7#L29true assume !!(main_~l~0 < 1000000); 11#L30true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 5#L31-3true [2020-11-30 01:11:39,091 INFO L796 eck$LassoCheckResult]: Loop: 5#L31-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 12#L32-2true assume !true; 8#L32-3true assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 9#L31-2true main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 5#L31-3true [2020-11-30 01:11:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2020-11-30 01:11:39,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:39,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5813073] [2020-11-30 01:11:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,279 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,361 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:39,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:39,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1721057, now seen corresponding path program 1 times [2020-11-30 01:11:39,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:39,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316191148] [2020-11-30 01:11:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:39,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316191148] [2020-11-30 01:11:39,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:11:39,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:11:39,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061094224] [2020-11-30 01:11:39,425 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:11:39,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:11:39,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:11:39,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:11:39,449 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-30 01:11:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:11:39,457 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-11-30 01:11:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:11:39,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2020-11-30 01:11:39,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 01:11:39,470 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 11 states and 13 transitions. [2020-11-30 01:11:39,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 01:11:39,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:11:39,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-11-30 01:11:39,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:11:39,495 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-30 01:11:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-11-30 01:11:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 01:11:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 01:11:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-30 01:11:39,530 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-30 01:11:39,530 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-30 01:11:39,531 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:11:39,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2020-11-30 01:11:39,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 01:11:39,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:11:39,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:11:39,535 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 01:11:39,535 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:11:39,535 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 41#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 42#L28 assume !!(main_~l~0 > 0); 47#L29 assume !!(main_~l~0 < 1000000); 51#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 46#L31-3 [2020-11-30 01:11:39,536 INFO L796 eck$LassoCheckResult]: Loop: 46#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 44#L32-2 assume !(main_~i~0 < main_~n~0); 49#L32-3 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 50#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 46#L31-3 [2020-11-30 01:11:39,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:39,550 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2020-11-30 01:11:39,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:39,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000331838] [2020-11-30 01:11:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,591 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:39,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1699915, now seen corresponding path program 1 times [2020-11-30 01:11:39,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:39,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114851819] [2020-11-30 01:11:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,612 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:39,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1271724403, now seen corresponding path program 1 times [2020-11-30 01:11:39,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:39,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861198827] [2020-11-30 01:11:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:39,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:39,702 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:39,831 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:11:39,832 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:11:39,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:11:39,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:11:39,834 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:11:39,834 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:39,834 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:11:39,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:11:39,843 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-11-30 01:11:39,843 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:11:39,843 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:11:39,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:39,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:39,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:40,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:11:40,046 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:40,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:40,059 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:40,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:11:40,072 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:40,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:40,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:11:40,123 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:11:40,123 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet7=-5} Honda state: {ULTIMATE.start_main_#t~nondet7=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:40,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:40,179 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:40,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:11:40,227 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:11:40,669 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:11:40,673 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:11:40,674 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:11:40,674 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:11:40,674 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:11:40,674 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:11:40,674 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:40,674 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:11:40,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:11:40,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-11-30 01:11:40,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:11:40,675 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:11:40,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:40,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:40,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:40,873 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:11:40,880 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:40,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:40,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:40,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:11:40,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:40,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:40,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:40,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:11:40,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:40,906 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:40,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:40,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:40,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:11:40,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:40,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:40,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:40,972 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:11:40,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:40,979 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:11:40,987 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:11:40,987 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:40,999 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:11:40,999 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:11:40,999 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:11:41,000 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:41,048 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:11:41,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:41,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:11:41,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:41,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:11:41,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:41,173 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:11:41,174 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-30 01:11:41,234 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2020-11-30 01:11:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:11:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-11-30 01:11:41,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-30 01:11:41,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:41,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2020-11-30 01:11:41,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:41,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2020-11-30 01:11:41,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:41,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-11-30 01:11:41,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:11:41,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 16 states and 20 transitions. [2020-11-30 01:11:41,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 01:11:41,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:11:41,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2020-11-30 01:11:41,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:11:41,247 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-11-30 01:11:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2020-11-30 01:11:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-11-30 01:11:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 01:11:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-11-30 01:11:41,254 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-30 01:11:41,258 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-30 01:11:41,258 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:11:41,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-11-30 01:11:41,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:11:41,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:11:41,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:11:41,265 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:11:41,267 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:11:41,268 INFO L794 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 117#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 118#L28 assume !!(main_~l~0 > 0); 126#L29 assume !!(main_~l~0 < 1000000); 131#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 124#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 120#L32-2 [2020-11-30 01:11:41,268 INFO L796 eck$LassoCheckResult]: Loop: 120#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 127#L18 assume !(0 == __VERIFIER_assert_~cond); 119#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 120#L32-2 [2020-11-30 01:11:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:41,270 INFO L82 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2020-11-30 01:11:41,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:41,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565034702] [2020-11-30 01:11:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:41,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:41,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:41,309 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:41,310 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 1 times [2020-11-30 01:11:41,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:41,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850837573] [2020-11-30 01:11:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:41,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:41,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:41,336 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:41,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1271726005, now seen corresponding path program 1 times [2020-11-30 01:11:41,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:41,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543453533] [2020-11-30 01:11:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:41,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:41,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:41,407 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:41,474 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:11:41,475 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:11:41,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:11:41,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:11:41,475 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:11:41,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:41,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:11:41,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:11:41,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-11-30 01:11:41,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:11:41,476 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:11:41,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:41,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:41,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:41,659 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:11:41,659 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:41,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:41,665 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:41,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:11:41,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:41,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:41,699 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/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) [2020-11-30 01:11:41,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:11:41,772 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:41,850 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:11:41,853 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:11:41,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:11:41,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:11:41,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:11:41,854 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:11:41,854 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:41,854 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:11:41,854 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:11:41,854 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-11-30 01:11:41,854 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:11:41,855 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:11:41,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:41,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:41,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:41,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:11:41,947 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:41,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:41,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:41,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:11:41,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:41,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:41,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:41,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:11:41,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:41,961 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:42,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:42,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:42,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:11:42,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:42,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:42,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:42,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:11:42,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,024 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:11:42,032 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 01:11:42,032 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,038 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:11:42,038 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:11:42,038 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:11:42,038 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-30 01:11:42,074 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:11:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:42,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:11:42,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:11:42,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:42,145 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:11:42,145 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-30 01:11:42,191 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 32 states and 41 transitions. Complement of second has 7 states. [2020-11-30 01:11:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:11:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-30 01:11:42,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 01:11:42,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:42,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 01:11:42,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:42,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 6 letters. [2020-11-30 01:11:42,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:42,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 41 transitions. [2020-11-30 01:11:42,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:11:42,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 21 states and 27 transitions. [2020-11-30 01:11:42,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 01:11:42,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-30 01:11:42,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2020-11-30 01:11:42,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:11:42,200 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2020-11-30 01:11:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2020-11-30 01:11:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-11-30 01:11:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 01:11:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-11-30 01:11:42,213 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-11-30 01:11:42,214 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-11-30 01:11:42,214 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:11:42,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2020-11-30 01:11:42,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:11:42,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:11:42,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:11:42,217 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:11:42,217 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:11:42,218 INFO L794 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 215#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 216#L28 assume !!(main_~l~0 > 0); 224#L29 assume !!(main_~l~0 < 1000000); 229#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 222#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 220#L32-2 assume !(main_~i~0 < main_~n~0); 227#L32-3 assume !(0 != main_#t~nondet7);havoc main_#t~nondet7; 228#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 223#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 218#L32-2 [2020-11-30 01:11:42,218 INFO L796 eck$LassoCheckResult]: Loop: 218#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 225#L18 assume !(0 == __VERIFIER_assert_~cond); 217#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 218#L32-2 [2020-11-30 01:11:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:42,219 INFO L82 PathProgramCache]: Analyzing trace with hash 768752776, now seen corresponding path program 1 times [2020-11-30 01:11:42,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:42,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448753921] [2020-11-30 01:11:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:42,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:42,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:42,261 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:42,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:42,262 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 2 times [2020-11-30 01:11:42,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:42,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191187712] [2020-11-30 01:11:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:42,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:11:42,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:11:42,275 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:11:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:42,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1148360765, now seen corresponding path program 1 times [2020-11-30 01:11:42,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:42,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102570794] [2020-11-30 01:11:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:42,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102570794] [2020-11-30 01:11:42,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043477980] [2020-11-30 01:11:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:11:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:42,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:11:42,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:42,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:11:42,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-30 01:11:42,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20589391] [2020-11-30 01:11:42,613 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:11:42,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:11:42,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:11:42,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:11:42,614 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:11:42,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:11:42,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:11:42,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-11-30 01:11:42,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:11:42,614 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:11:42,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:42,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:42,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:42,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:11:42,710 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:42,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:11:42,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:11:42,751 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:42,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:11:42,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:11:42,791 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:11:42,821 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:11:42,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:11:42,897 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:11:42,904 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:11:42,904 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:11:42,904 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:11:42,904 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:11:42,905 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:11:42,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:42,905 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:11:42,905 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:11:42,905 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-11-30 01:11:42,905 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:11:42,905 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:11:42,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:42,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:42,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:11:43,013 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:11:43,014 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:43,020 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:43,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:43,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:11:43,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:43,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:43,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:43,025 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:11:43,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:11:43,033 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/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 [2020-11-30 01:11:43,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:43,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:43,067 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:11:43,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:43,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:43,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:43,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:11:43,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:11:43,077 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:43,128 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:11:43,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:11:43,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:11:43,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:11:43,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:11:43,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:11:43,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:11:43,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:43,137 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:11:43,146 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 01:11:43,146 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ce5fa0c-237b-4d5f-b7da-20c8609d8b53/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:11:43,150 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:11:43,150 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:11:43,150 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:11:43,150 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:11:43,193 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:11:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:43,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:11:43,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:43,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:11:43,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:43,318 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:11:43,318 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 01:11:43,350 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2020-11-30 01:11:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:11:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-30 01:11:43,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 01:11:43,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:43,352 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:11:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:43,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:11:43,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:43,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:11:43,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:43,426 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:11:43,427 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 01:11:43,452 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2020-11-30 01:11:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:11:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-30 01:11:43,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 01:11:43,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:43,454 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:11:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:43,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:11:43,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:11:43,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:11:43,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:43,532 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:11:43,532 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 01:11:43,557 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 23 states and 28 transitions. Complement of second has 6 states. [2020-11-30 01:11:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:11:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:11:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-11-30 01:11:43,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 01:11:43,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:43,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-30 01:11:43,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:43,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 01:11:43,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:11:43,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2020-11-30 01:11:43,563 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:11:43,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-11-30 01:11:43,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:11:43,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:11:43,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:11:43,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:11:43,563 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:43,563 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:43,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:11:43,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:11:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:11:43,565 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-11-30 01:11:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:11:43,565 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-30 01:11:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:11:43,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-30 01:11:43,565 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:11:43,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:11:43,566 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:11:43,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:11:43,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:11:43,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:11:43,566 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:43,566 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:43,566 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:11:43,566 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:11:43,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:11:43,567 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:11:43,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:11:43,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:11:43 BoogieIcfgContainer [2020-11-30 01:11:43,574 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:11:43,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:11:43,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:11:43,575 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:11:43,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:11:38" (3/4) ... [2020-11-30 01:11:43,580 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:11:43,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:11:43,582 INFO L168 Benchmark]: Toolchain (without parser) took 5935.74 ms. Allocated memory was 77.6 MB in the beginning and 125.8 MB in the end (delta: 48.2 MB). Free memory was 44.7 MB in the beginning and 74.2 MB in the end (delta: -29.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:43,583 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:11:43,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.69 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 44.6 MB in the beginning and 82.8 MB in the end (delta: -38.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:43,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.92 ms. Allocated memory is still 104.9 MB. Free memory was 82.8 MB in the beginning and 81.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:43,585 INFO L168 Benchmark]: Boogie Preprocessor took 59.00 ms. Allocated memory is still 104.9 MB. Free memory was 81.5 MB in the beginning and 80.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:11:43,586 INFO L168 Benchmark]: RCFGBuilder took 673.91 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 68.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:43,587 INFO L168 Benchmark]: BuchiAutomizer took 4662.82 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 68.1 MB in the beginning and 74.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:11:43,587 INFO L168 Benchmark]: Witness Printer took 5.30 ms. Allocated memory is still 125.8 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:11:43,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.69 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 44.6 MB in the beginning and 82.8 MB in the end (delta: -38.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.92 ms. Allocated memory is still 104.9 MB. Free memory was 82.8 MB in the beginning and 81.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.00 ms. Allocated memory is still 104.9 MB. Free memory was 81.5 MB in the beginning and 80.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 673.91 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 68.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4662.82 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 68.1 MB in the beginning and 74.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.30 ms. Allocated memory is still 125.8 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 77 SDtfs, 60 SDslu, 28 SDs, 0 SdLazy, 43 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf98 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...