./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC --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 64bit --witnessprinter.graph.data.programhash c0afa1d46bded0eb2bd485bf4790c0d11468ed7a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:23:02,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:02,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:02,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:02,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:02,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:02,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:02,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:02,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:02,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:02,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:02,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:02,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:02,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:02,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:02,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:02,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:02,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:02,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:02,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:02,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:02,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:02,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:02,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:02,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:02,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:02,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:02,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:02,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:02,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:02,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:02,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:02,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:02,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:02,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:02,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:02,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:02,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:02,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:02,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:02,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:02,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:23:02,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:02,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:02,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:02,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:02,272 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:02,272 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:23:02,272 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:23:02,272 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:23:02,273 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:23:02,273 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:23:02,274 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:23:02,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:02,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:23:02,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:23:02,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:02,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:23:02,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:23:02,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:23:02,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:02,276 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:23:02,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:02,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:23:02,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:02,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:02,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:02,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:23:02,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:02,278 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:23:02,278 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2021-10-11 00:23:02,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:02,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:02,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:02,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:02,592 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:02,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-10-11 00:23:02,677 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/data/0b808ee6f/93f96fd647e4475399faeeaa83547e43/FLAGa604fa917 [2021-10-11 00:23:03,260 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:03,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-10-11 00:23:03,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/data/0b808ee6f/93f96fd647e4475399faeeaa83547e43/FLAGa604fa917 [2021-10-11 00:23:03,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/data/0b808ee6f/93f96fd647e4475399faeeaa83547e43 [2021-10-11 00:23:03,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:03,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:03,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:03,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:03,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:03,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644f5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03, skipping insertion in model container [2021-10-11 00:23:03,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:03,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:03,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:03,846 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:03,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:03,893 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:03,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03 WrapperNode [2021-10-11 00:23:03,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:03,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:03,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:03,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:03,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:03,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:03,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:03,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:03,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... [2021-10-11 00:23:03,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:03,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:03,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:03,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:03,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:04,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:04,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:04,204 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 00:23:04,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:04 BoogieIcfgContainer [2021-10-11 00:23:04,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:04,206 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:23:04,206 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:23:04,210 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:23:04,211 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:23:04,211 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:23:03" (1/3) ... [2021-10-11 00:23:04,212 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@643b9ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:23:04, skipping insertion in model container [2021-10-11 00:23:04,213 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:23:04,213 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:03" (2/3) ... [2021-10-11 00:23:04,213 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@643b9ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:23:04, skipping insertion in model container [2021-10-11 00:23:04,214 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:23:04,214 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:04" (3/3) ... [2021-10-11 00:23:04,215 INFO L389 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-10-11 00:23:04,264 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:23:04,264 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:23:04,264 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:23:04,265 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:04,265 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:04,265 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:23:04,265 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:04,265 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:23:04,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2021-10-11 00:23:04,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:04,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:04,295 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:04,302 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:23:04,302 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:23:04,302 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:23:04,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2021-10-11 00:23:04,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:04,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:04,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:04,304 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:23:04,304 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:23:04,312 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2021-10-11 00:23:04,312 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 7#L24-2true assume !(main_~y~0 < main_~z~0); 5#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 10#L22-2true [2021-10-11 00:23:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:04,319 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-11 00:23:04,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:04,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117352864] [2021-10-11 00:23:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:04,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:04,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:04,432 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:04,434 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2021-10-11 00:23:04,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:04,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231333324] [2021-10-11 00:23:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:04,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:04,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:04,455 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:04,457 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2021-10-11 00:23:04,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:04,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761839202] [2021-10-11 00:23:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:04,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:04,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:04,479 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:04,552 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:04,553 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:04,553 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:04,554 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:04,554 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:23:04,554 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:04,554 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:04,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:04,555 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-10-11 00:23:04,555 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:04,555 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:04,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:04,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:04,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:04,695 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:04,696 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:04,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:04,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:04,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:04,770 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:04,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:04,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:04,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:04,840 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:04,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:04,864 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:04,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:23:04,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:05,151 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:23:05,153 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:05,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:05,153 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:05,153 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:05,153 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:23:05,153 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:05,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:05,154 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:05,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-10-11 00:23:05,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:05,154 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:05,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:05,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:05,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:05,251 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:05,256 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:05,268 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 [2021-10-11 00:23:05,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:05,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:05,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:05,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:05,276 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:05,277 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:05,303 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:05,343 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 [2021-10-11 00:23:05,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:05,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:05,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:05,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:05,350 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:05,350 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:05,360 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:05,403 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 [2021-10-11 00:23:05,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:05,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:05,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:05,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:05,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:05,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:23:05,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:05,417 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-11 00:23:05,450 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:05,457 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 [2021-10-11 00:23:05,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:05,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:05,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:05,460 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:23:05,473 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-11 00:23:05,473 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:05,487 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:05,517 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 [2021-10-11 00:23:05,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:05,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:05,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:05,519 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:23:05,531 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-11 00:23:05,531 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-10-11 00:23:05,554 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:05,585 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 [2021-10-11 00:23:05,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:05,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:05,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:05,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:05,588 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:23:05,591 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-11 00:23:05,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:23:05,614 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:23:05,631 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-11 00:23:05,632 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:05,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:23:05,663 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:23:05,664 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:23:05,664 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:05,699 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:23:05,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:05,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:05,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:05,755 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:23:05,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:05,793 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:05,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:05,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:05,860 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:23:05,861 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2021-10-11 00:23:05,916 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2021-10-11 00:23:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:23:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:23:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-10-11 00:23:05,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-11 00:23:05,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:05,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-11 00:23:05,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:05,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-11 00:23:05,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:05,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2021-10-11 00:23:05,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:05,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2021-10-11 00:23:05,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-11 00:23:05,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-11 00:23:05,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-10-11 00:23:05,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:23:05,935 INFO L692 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-11 00:23:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-10-11 00:23:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 00:23:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:23:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2021-10-11 00:23:05,962 INFO L715 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-11 00:23:05,962 INFO L595 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-11 00:23:05,962 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:23:05,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2021-10-11 00:23:05,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:05,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:05,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:05,964 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-11 00:23:05,964 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:23:05,964 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2021-10-11 00:23:05,964 INFO L796 eck$LassoCheckResult]: Loop: 97#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2021-10-11 00:23:05,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:05,965 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2021-10-11 00:23:05,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:05,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896873603] [2021-10-11 00:23:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:05,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:05,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:05,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:05,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:05,984 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-10-11 00:23:05,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:05,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847016064] [2021-10-11 00:23:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:05,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:05,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:05,994 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:05,995 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2021-10-11 00:23:05,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:05,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358894803] [2021-10-11 00:23:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,027 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:06,045 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:06,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:06,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:06,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:06,045 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:23:06,046 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,046 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:06,046 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:06,046 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-10-11 00:23:06,046 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:06,046 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:06,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,139 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:06,146 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:06,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:06,158 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:06,171 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:06,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:06,210 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,223 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:06,223 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:06,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:06,264 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:06,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:23:06,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:06,508 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:23:06,509 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:06,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:06,510 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:06,510 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:06,510 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:23:06,510 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,510 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:06,510 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:06,510 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-10-11 00:23:06,510 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:06,510 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:06,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:06,611 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:06,611 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:06,618 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 [2021-10-11 00:23:06,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:06,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:06,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:06,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:06,624 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:06,624 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,648 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:06,691 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 [2021-10-11 00:23:06,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:06,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:06,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:06,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:06,696 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:06,696 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,710 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:06,750 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 [2021-10-11 00:23:06,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:06,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:06,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:06,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:06,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:06,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:23:06,755 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,766 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:23:06,770 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:23:06,771 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:06,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:23:06,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:23:06,783 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:23:06,783 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:06,818 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:23:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:06,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:06,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:06,856 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:23:06,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:06,857 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:23:06,857 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2021-10-11 00:23:06,878 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 17 states and 28 transitions. Complement of second has 6 states. [2021-10-11 00:23:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:23:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:23:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-11 00:23:06,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2021-10-11 00:23:06,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:06,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-11 00:23:06,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:06,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-11 00:23:06,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:06,881 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2021-10-11 00:23:06,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:06,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2021-10-11 00:23:06,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-11 00:23:06,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-11 00:23:06,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2021-10-11 00:23:06,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:23:06,889 INFO L692 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-11 00:23:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2021-10-11 00:23:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-11 00:23:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:23:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2021-10-11 00:23:06,893 INFO L715 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-10-11 00:23:06,893 INFO L595 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-10-11 00:23:06,894 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-11 00:23:06,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2021-10-11 00:23:06,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:06,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:06,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:06,898 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-11 00:23:06,898 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:23:06,899 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2021-10-11 00:23:06,899 INFO L796 eck$LassoCheckResult]: Loop: 152#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 153#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 159#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2021-10-11 00:23:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2021-10-11 00:23:06,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:06,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776983893] [2021-10-11 00:23:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,938 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:06,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:06,941 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2021-10-11 00:23:06,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:06,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130494000] [2021-10-11 00:23:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,962 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:06,963 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2021-10-11 00:23:06,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:06,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340505408] [2021-10-11 00:23:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:06,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:06,989 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:07,012 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:07,013 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:07,013 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:07,013 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:07,013 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:23:07,013 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:07,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:07,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-10-11 00:23:07,015 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:07,016 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:07,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:07,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:07,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:07,106 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:07,106 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:07,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:07,114 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:07,127 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:07,165 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:23:07,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:07,470 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:23:07,472 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:07,472 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:07,472 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:07,472 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:07,472 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:23:07,472 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,473 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:07,473 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:07,473 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-10-11 00:23:07,473 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:07,473 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:07,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:07,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:07,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:07,544 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:07,544 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:07,552 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 [2021-10-11 00:23:07,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:07,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:07,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:07,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:07,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:07,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:23:07,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,594 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 [2021-10-11 00:23:07,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:07,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:07,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:07,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:07,597 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:07,598 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:23:07,608 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,641 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 [2021-10-11 00:23:07,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:07,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:07,642 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:07,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:07,645 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:07,645 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:23:07,670 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-11 00:23:07,701 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:07,711 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 [2021-10-11 00:23:07,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:07,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:07,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:07,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:07,714 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:23:07,716 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-11 00:23:07,717 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,734 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:23:07,742 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-11 00:23:07,743 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:07,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:23:07,746 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:23:07,746 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:23:07,746 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-11 00:23:07,765 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:23:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:07,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:07,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:07,804 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:23:07,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:07,813 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:07,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:07,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:07,882 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:08,013 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:23:08,014 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2021-10-11 00:23:08,055 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 30 states and 45 transitions. Complement of second has 8 states. [2021-10-11 00:23:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:23:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:23:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2021-10-11 00:23:08,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-11 00:23:08,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-11 00:23:08,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2021-10-11 00:23:08,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2021-10-11 00:23:08,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:08,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2021-10-11 00:23:08,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-11 00:23:08,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-11 00:23:08,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2021-10-11 00:23:08,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:23:08,061 INFO L692 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2021-10-11 00:23:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2021-10-11 00:23:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-10-11 00:23:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:23:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-10-11 00:23:08,064 INFO L715 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-11 00:23:08,064 INFO L595 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-11 00:23:08,064 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-11 00:23:08,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-10-11 00:23:08,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:08,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:08,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:08,066 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-11 00:23:08,066 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:23:08,066 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2021-10-11 00:23:08,066 INFO L796 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2021-10-11 00:23:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2021-10-11 00:23:08,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:08,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83668162] [2021-10-11 00:23:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,085 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,086 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2021-10-11 00:23:08,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:08,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683019246] [2021-10-11 00:23:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,090 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,092 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2021-10-11 00:23:08,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:08,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629241557] [2021-10-11 00:23:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,111 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:08,127 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:08,127 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:08,127 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:08,128 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:08,128 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:23:08,128 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:08,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:08,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:08,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-10-11 00:23:08,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:08,128 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:08,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,199 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:08,199 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:08,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:08,202 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:08,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:08,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:08,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:08,249 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:08,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:23:08,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:08,453 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:23:08,455 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:08,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:08,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:08,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:08,455 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:23:08,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:08,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:08,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:08,455 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-10-11 00:23:08,455 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:08,455 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:08,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:08,531 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:08,532 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:08,535 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 [2021-10-11 00:23:08,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:08,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:08,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:08,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:08,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:08,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:23:08,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:23:08,548 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:23:08,550 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:23:08,550 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:08,552 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:23:08,552 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:23:08,552 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:23:08,553 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-11 00:23:08,571 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:23:08,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:08,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:08,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:08,624 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:23:08,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:08,625 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:23:08,626 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2021-10-11 00:23:08,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2021-10-11 00:23:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:23:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:23:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-10-11 00:23:08,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-11 00:23:08,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,641 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:23:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:08,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:08,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:08,691 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:23:08,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:08,694 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:23:08,694 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2021-10-11 00:23:08,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2021-10-11 00:23:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:23:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:23:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-10-11 00:23:08,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-11 00:23:08,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,714 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:23:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:08,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:08,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:08,750 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:23:08,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:08,752 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 1 loop predicates [2021-10-11 00:23:08,752 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2021-10-11 00:23:08,767 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 29 states and 45 transitions. Complement of second has 5 states. [2021-10-11 00:23:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:23:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:23:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-11 00:23:08,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-11 00:23:08,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2021-10-11 00:23:08,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2021-10-11 00:23:08,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:08,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2021-10-11 00:23:08,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-11 00:23:08,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2021-10-11 00:23:08,779 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-11 00:23:08,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-11 00:23:08,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-10-11 00:23:08,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:23:08,779 INFO L692 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-10-11 00:23:08,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-10-11 00:23:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-10-11 00:23:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:23:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-10-11 00:23:08,781 INFO L715 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-11 00:23:08,781 INFO L595 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-11 00:23:08,781 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-11 00:23:08,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-10-11 00:23:08,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-11 00:23:08,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:08,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:08,783 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-11 00:23:08,783 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:23:08,783 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2021-10-11 00:23:08,783 INFO L796 eck$LassoCheckResult]: Loop: 447#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 448#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2021-10-11 00:23:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,784 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2021-10-11 00:23:08,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:08,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420915778] [2021-10-11 00:23:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,797 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2021-10-11 00:23:08,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:08,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909053567] [2021-10-11 00:23:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:08,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:08,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:08,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:08,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2021-10-11 00:23:08,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:08,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263606571] [2021-10-11 00:23:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:08,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263606571] [2021-10-11 00:23:08,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124151022] [2021-10-11 00:23:08,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:23:08,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-11 00:23:08,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:23:08,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:23:08,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:08,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:23:08,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-11 00:23:08,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513386080] [2021-10-11 00:23:09,057 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:09,057 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:09,057 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:09,057 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:09,058 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:23:09,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:09,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:09,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-10-11 00:23:09,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:09,058 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:09,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:09,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:09,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:09,148 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:09,148 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:09,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:09,158 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,183 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:09,184 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:09,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:09,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:09,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:09,232 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:23:09,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:23:09,470 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:23:09,473 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:09,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:09,473 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:09,473 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:09,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:23:09,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:09,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:09,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-10-11 00:23:09,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:09,474 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:09,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:09,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:09,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:09,569 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:09,569 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:09,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:23:09,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:09,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:09,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:09,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:09,588 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:09,589 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,636 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 [2021-10-11 00:23:09,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:09,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:09,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:09,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:09,640 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:09,641 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:23:09,662 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:09,700 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 [2021-10-11 00:23:09,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:09,702 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:09,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:09,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:09,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:09,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:23:09,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,720 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-11 00:23:09,739 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,741 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 [2021-10-11 00:23:09,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:09,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:09,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:09,743 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:23:09,745 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-11 00:23:09,746 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-10-11 00:23:09,767 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,791 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 [2021-10-11 00:23:09,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:09,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:09,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:09,792 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:23:09,796 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-11 00:23:09,796 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-10-11 00:23:09,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:09,857 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 [2021-10-11 00:23:09,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:09,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:09,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:09,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:09,861 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:23:09,863 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-11 00:23:09,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,878 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:23:09,886 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-11 00:23:09,886 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:09,895 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:23:09,895 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:23:09,895 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:23:09,895 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,927 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:23:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:09,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:09,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:09,972 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:23:09,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:09,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:10,044 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:10,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:10,049 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:10,103 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:23:10,103 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2021-10-11 00:23:10,134 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 26 states and 37 transitions. Complement of second has 7 states. [2021-10-11 00:23:10,139 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 [2021-10-11 00:23:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:23:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-11 00:23:10,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-11 00:23:10,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:10,140 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:23:10,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:10,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:10,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:10,184 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:23:10,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:10,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:10,262 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:10,263 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:10,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:10,318 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:23:10,318 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2021-10-11 00:23:10,342 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 7 states. [2021-10-11 00:23:10,343 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 [2021-10-11 00:23:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:23:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-11 00:23:10,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-11 00:23:10,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:10,344 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:23:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:10,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:10,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:10,395 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:23:10,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:10,401 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:10,499 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:10,501 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:23:10,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:23:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:10,580 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 3 loop predicates [2021-10-11 00:23:10,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2021-10-11 00:23:10,609 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 31 states and 43 transitions. Complement of second has 6 states. [2021-10-11 00:23:10,610 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 [2021-10-11 00:23:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:23:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-11 00:23:10,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-11 00:23:10,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:10,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2021-10-11 00:23:10,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:10,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-11 00:23:10,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:10,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2021-10-11 00:23:10,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-11 00:23:10,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2021-10-11 00:23:10,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-11 00:23:10,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-11 00:23:10,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2021-10-11 00:23:10,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:23:10,614 INFO L692 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-10-11 00:23:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2021-10-11 00:23:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-10-11 00:23:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:23:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2021-10-11 00:23:10,617 INFO L715 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2021-10-11 00:23:10,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:23:10,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:23:10,621 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2021-10-11 00:23:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:10,769 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-10-11 00:23:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:23:10,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2021-10-11 00:23:10,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-11 00:23:10,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2021-10-11 00:23:10,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-11 00:23:10,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-11 00:23:10,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2021-10-11 00:23:10,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:23:10,773 INFO L692 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-11 00:23:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2021-10-11 00:23:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2021-10-11 00:23:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:23:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2021-10-11 00:23:10,776 INFO L715 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-10-11 00:23:10,777 INFO L595 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-10-11 00:23:10,777 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-11 00:23:10,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2021-10-11 00:23:10,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-11 00:23:10,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:10,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:10,785 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-11 00:23:10,785 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:23:10,785 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2021-10-11 00:23:10,785 INFO L796 eck$LassoCheckResult]: Loop: 778#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 779#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 789#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2021-10-11 00:23:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2021-10-11 00:23:10,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:10,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373243906] [2021-10-11 00:23:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:10,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:10,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:10,803 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2021-10-11 00:23:10,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:10,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22360298] [2021-10-11 00:23:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:10,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:10,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:10,813 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:10,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2021-10-11 00:23:10,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:10,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539276007] [2021-10-11 00:23:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:10,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:10,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:10,842 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:10,879 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:10,879 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:10,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:10,879 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:10,879 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:23:10,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:10,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:10,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:10,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-10-11 00:23:10,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:10,880 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:10,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:10,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:10,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:10,974 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:10,974 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:10,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:10,977 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:10,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:10,995 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:11,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:11,035 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:23:11,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:23:11,088 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:23:11,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:23:11,126 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,701 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:23:11,702 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:23:11,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:23:11,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:23:11,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:23:11,703 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:23:11,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:23:11,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:23:11,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-10-11 00:23:11,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:23:11,703 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:23:11,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:11,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:11,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:23:11,777 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:23:11,777 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,779 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 [2021-10-11 00:23:11,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:11,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:11,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:11,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:11,782 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:11,782 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:23:11,785 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,805 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 [2021-10-11 00:23:11,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:11,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:11,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:11,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:11,814 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:23:11,814 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:23:11,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,843 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 [2021-10-11 00:23:11,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:23:11,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:23:11,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:23:11,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:23:11,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:23:11,846 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:23:11,847 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:23:11,858 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:23:11,861 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:23:11,861 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096b94b9-881b-478a-97c5-fb56cc5c70bd/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:11,868 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:23:11,868 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:23:11,869 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:23:11,869 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-10-11 00:23:11,887 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:23:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:11,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:23:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:11,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:23:11,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:11,956 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:23:11,956 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2021-10-11 00:23:11,977 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 35 states and 50 transitions. Complement of second has 6 states. [2021-10-11 00:23:11,981 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 [2021-10-11 00:23:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-11 00:23:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-11 00:23:11,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-11 00:23:11,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:11,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-11 00:23:11,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:11,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-11 00:23:11,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:23:11,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-10-11 00:23:11,983 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:23:11,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2021-10-11 00:23:11,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:23:11,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:23:11,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:23:11,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:23:11,984 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:23:11,984 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:23:11,984 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:23:11,984 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-11 00:23:11,984 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:23:11,984 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:23:11,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-11 00:23:11,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:23:11 BoogieIcfgContainer [2021-10-11 00:23:11,990 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:23:11,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:11,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:11,991 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:11,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:04" (3/4) ... [2021-10-11 00:23:11,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:23:11,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:11,996 INFO L168 Benchmark]: Toolchain (without parser) took 8320.28 ms. Allocated memory was 107.0 MB in the beginning and 192.9 MB in the end (delta: 86.0 MB). Free memory was 77.9 MB in the beginning and 71.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 91.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:11,997 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:11,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.08 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 77.9 MB in the beginning and 136.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:11,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.83 ms. Allocated memory is still 159.4 MB. Free memory was 136.7 MB in the beginning and 135.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:11,998 INFO L168 Benchmark]: Boogie Preprocessor took 16.41 ms. Allocated memory is still 159.4 MB. Free memory was 135.3 MB in the beginning and 134.6 MB in the end (delta: 665.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:11,999 INFO L168 Benchmark]: RCFGBuilder took 256.68 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 124.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:11,999 INFO L168 Benchmark]: BuchiAutomizer took 7783.70 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 124.8 MB in the beginning and 72.3 MB in the end (delta: 52.5 MB). Peak memory consumption was 88.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:12,000 INFO L168 Benchmark]: Witness Printer took 3.88 ms. Allocated memory is still 192.9 MB. Free memory is still 71.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:12,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.08 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 77.9 MB in the beginning and 136.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.83 ms. Allocated memory is still 159.4 MB. Free memory was 136.7 MB in the beginning and 135.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.41 ms. Allocated memory is still 159.4 MB. Free memory was 135.3 MB in the beginning and 134.6 MB in the end (delta: 665.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 256.68 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 124.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7783.70 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 124.8 MB in the beginning and 72.3 MB in the end (delta: 52.5 MB). Peak memory consumption was 88.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.88 ms. Allocated memory is still 192.9 MB. Free memory is still 71.2 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 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.7s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 5.8s. Construction of modules took 0.1s. Büchi inclusion checks took 1.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 68 SDslu, 8 SDs, 0 SdLazy, 143 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...