./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c0afa1d46bded0eb2bd485bf4790c0d11468ed7a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:09:08,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:09:08,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:09:08,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:09:08,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:09:08,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:09:08,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:09:08,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:09:08,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:09:08,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:09:08,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:09:08,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:09:08,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:09:08,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:09:08,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:09:08,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:09:08,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:09:08,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:09:08,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:09:08,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:09:08,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:09:08,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:09:08,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:09:08,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:09:08,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:09:08,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:09:08,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:09:08,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:09:08,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:09:08,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:09:08,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:09:08,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:09:08,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:09:08,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:09:08,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:09:08,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:09:08,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:09:08,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:09:08,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:09:08,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:09:08,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:09:08,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:09:08,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:09:08,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:09:08,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:09:08,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:09:08,388 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:09:08,388 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:09:08,388 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:09:08,388 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:09:08,388 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:09:08,388 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:09:08,389 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:09:08,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:09:08,389 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:09:08,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:09:08,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:09:08,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:09:08,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:09:08,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:09:08,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:09:08,390 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:09:08,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:09:08,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:09:08,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:09:08,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:09:08,390 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:09:08,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:09:08,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:09:08,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:09:08,391 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:09:08,391 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:09:08,391 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2019-12-07 17:09:08,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:09:08,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:09:08,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:09:08,503 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:09:08,503 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:09:08,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-12-07 17:09:08,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/data/b47554126/c07566c4b35e43508d5d4a1e48929cb1/FLAGd72b5bfb0 [2019-12-07 17:09:08,873 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:09:08,874 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-12-07 17:09:08,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/data/b47554126/c07566c4b35e43508d5d4a1e48929cb1/FLAGd72b5bfb0 [2019-12-07 17:09:08,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/data/b47554126/c07566c4b35e43508d5d4a1e48929cb1 [2019-12-07 17:09:08,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:09:08,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:09:08,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:09:08,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:09:08,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:09:08,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:09:08" (1/1) ... [2019-12-07 17:09:08,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119a7e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:08, skipping insertion in model container [2019-12-07 17:09:08,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:09:08" (1/1) ... [2019-12-07 17:09:08,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:09:08,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:09:09,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:09:09,006 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:09:09,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:09:09,069 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:09:09,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09 WrapperNode [2019-12-07 17:09:09,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:09:09,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:09:09,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:09:09,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:09:09,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:09:09,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:09:09,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:09:09,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:09:09,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... [2019-12-07 17:09:09,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:09:09,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:09:09,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:09:09,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:09:09,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:09:09,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:09:09,240 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:09:09,241 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 17:09:09,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:09:09 BoogieIcfgContainer [2019-12-07 17:09:09,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:09:09,242 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:09:09,243 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:09:09,245 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:09:09,245 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:09:09,245 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:09:08" (1/3) ... [2019-12-07 17:09:09,246 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@116c98e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:09:09, skipping insertion in model container [2019-12-07 17:09:09,246 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:09:09,246 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:09:09" (2/3) ... [2019-12-07 17:09:09,246 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@116c98e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:09:09, skipping insertion in model container [2019-12-07 17:09:09,246 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:09:09,247 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:09:09" (3/3) ... [2019-12-07 17:09:09,247 INFO L371 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-12-07 17:09:09,277 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:09:09,277 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:09:09,277 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:09:09,277 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:09:09,277 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:09:09,277 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:09:09,277 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:09:09,277 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:09:09,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 17:09:09,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:09,299 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:09,299 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:09,303 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:09:09,303 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:09:09,303 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:09:09,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 17:09:09,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:09,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:09,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:09,304 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:09:09,304 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:09:09,309 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2019-12-07 17:09:09,309 INFO L796 eck$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 [2019-12-07 17:09:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-12-07 17:09:09,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:09,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43291168] [2019-12-07 17:09:09,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:09,391 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:09,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:09,392 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2019-12-07 17:09:09,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:09,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45095455] [2019-12-07 17:09:09,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:09,401 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:09,402 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2019-12-07 17:09:09,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:09,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844786697] [2019-12-07 17:09:09,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:09,413 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:09,447 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:09,447 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:09,447 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:09,447 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:09,447 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:09:09,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:09,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:09,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:09,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-12-07 17:09:09,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:09,448 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:09,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:09,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:09,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:09,533 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:09,533 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:09,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:09,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:09,547 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:09,547 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:09,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:09,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:09,555 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:09,555 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:09,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:09,560 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:09,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:09:09,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:11,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:09:11,721 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:11,721 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:11,721 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:11,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:11,722 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:09:11,722 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,722 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:11,722 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:11,722 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-12-07 17:09:11,722 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:11,722 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:11,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:11,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:11,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:11,769 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:11,772 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:09:11,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:11,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:11,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:11,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:11,783 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:11,783 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:11,787 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,792 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 [2019-12-07 17:09:11,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:11,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:11,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:11,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:11,795 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:11,795 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:11,799 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,803 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 [2019-12-07 17:09:11,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:11,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:11,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:11,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:11,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:11,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:09:11,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:11,810 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-12-07 17:09:11,812 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,815 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 [2019-12-07 17:09:11,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:11,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:11,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:11,817 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:09:11,820 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-12-07 17:09:11,820 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-12-07 17:09:11,825 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,830 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 [2019-12-07 17:09:11,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:11,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:11,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:11,832 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:09:11,835 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-12-07 17:09:11,835 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-12-07 17:09:11,840 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,845 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 [2019-12-07 17:09:11,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:11,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:11,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:11,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:11,847 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:09:11,849 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:09:11,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:11,853 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:09:11,862 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-12-07 17:09:11,862 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:11,874 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:09:11,874 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:09:11,874 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:09:11,875 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 [] [2019-12-07 17:09:11,879 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:09:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:11,910 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:11,911 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:11,919 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:09:11,920 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:11,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:11,927 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:11,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:11,960 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 [2019-12-07 17:09:11,961 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2019-12-07 17:09:11,999 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2019-12-07 17:09:11,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:09:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-12-07 17:09:12,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2019-12-07 17:09:12,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:12,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 17:09:12,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:12,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2019-12-07 17:09:12,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:12,004 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-12-07 17:09:12,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:12,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2019-12-07 17:09:12,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 17:09:12,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 17:09:12,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-12-07 17:09:12,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:09:12,012 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 17:09:12,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-12-07 17:09:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 17:09:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 17:09:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-12-07 17:09:12,030 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 17:09:12,030 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 17:09:12,030 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:09:12,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2019-12-07 17:09:12,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:12,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:12,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:12,032 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 17:09:12,032 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 17:09:12,032 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2019-12-07 17:09:12,032 INFO L796 eck$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 [2019-12-07 17:09:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:12,032 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2019-12-07 17:09:12,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:12,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86105666] [2019-12-07 17:09:12,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,045 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:12,045 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-12-07 17:09:12,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:12,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903942222] [2019-12-07 17:09:12,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,050 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:12,051 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2019-12-07 17:09:12,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:12,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024259342] [2019-12-07 17:09:12,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,063 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:12,074 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:12,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:12,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:12,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:12,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:09:12,075 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,075 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:12,075 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:12,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-12-07 17:09:12,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:12,075 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:12,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,119 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:12,119 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:12,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:12,125 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:12,125 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:12,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:12,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:12,138 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:12,143 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:09:12,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:12,310 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:09:12,312 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:12,312 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:12,312 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:12,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:12,313 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:09:12,313 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,313 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:12,313 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:12,313 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-12-07 17:09:12,313 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:12,313 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:12,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,352 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:12,353 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,355 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 [2019-12-07 17:09:12,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:12,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:12,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:12,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:12,359 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:12,359 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:12,364 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,369 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 [2019-12-07 17:09:12,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:12,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:12,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:12,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:12,372 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:12,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:12,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,386 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 [2019-12-07 17:09:12,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:12,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:12,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:12,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:12,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:12,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:09:12,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:12,391 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:09:12,394 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 17:09:12,394 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,402 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:09:12,402 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:09:12,403 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:09:12,403 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 [] [2019-12-07 17:09:12,405 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:09:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:12,421 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:12,421 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:12,425 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:09:12,425 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:12,425 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 [2019-12-07 17:09:12,426 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2019-12-07 17:09:12,434 INFO L76 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. [2019-12-07 17:09:12,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:09:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 17:09:12,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2019-12-07 17:09:12,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:12,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2019-12-07 17:09:12,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:12,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 17:09:12,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:12,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2019-12-07 17:09:12,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:12,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2019-12-07 17:09:12,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 17:09:12,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-12-07 17:09:12,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-12-07 17:09:12,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:09:12,438 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-12-07 17:09:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-12-07 17:09:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 17:09:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:09:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-12-07 17:09:12,439 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-12-07 17:09:12,439 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-12-07 17:09:12,439 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:09:12,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-12-07 17:09:12,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:12,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:12,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:12,441 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 17:09:12,441 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:09:12,441 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2019-12-07 17:09:12,441 INFO L796 eck$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 [2019-12-07 17:09:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:12,442 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2019-12-07 17:09:12,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:12,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985924098] [2019-12-07 17:09:12,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,452 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:12,452 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2019-12-07 17:09:12,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:12,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269589394] [2019-12-07 17:09:12,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,458 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:12,459 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2019-12-07 17:09:12,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:12,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83829998] [2019-12-07 17:09:12,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:12,471 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:12,483 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:12,483 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:12,484 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:12,484 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:12,484 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:09:12,484 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,484 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:12,484 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:12,484 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-12-07 17:09:12,484 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:12,484 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:12,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:12,528 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:12,528 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:12,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:12,535 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:12,535 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:12,539 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:12,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:09:12,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:14,707 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:09:14,709 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:14,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:14,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:14,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:14,710 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:09:14,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:14,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:14,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:14,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-12-07 17:09:14,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:14,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:14,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:14,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:14,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:14,757 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:14,757 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:14,760 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 [2019-12-07 17:09:14,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:14,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:14,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:14,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:14,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:14,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:09:14,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:14,765 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:14,769 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 [2019-12-07 17:09:14,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:14,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:14,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:14,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:14,772 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:14,772 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:14,775 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:14,779 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 [2019-12-07 17:09:14,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:14,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:14,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:14,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:14,782 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:14,782 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:14,785 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-12-07 17:09:14,786 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:14,790 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 [2019-12-07 17:09:14,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:14,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:14,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:14,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:14,792 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:09:14,793 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:09:14,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:14,796 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:09:14,802 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-12-07 17:09:14,803 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:14,814 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:09:14,814 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:09:14,814 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:09:14,814 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 [] [2019-12-07 17:09:14,817 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:09:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:14,833 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:14,834 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:14,837 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:09:14,837 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:14,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:14,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:14,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:14,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:14,914 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 [2019-12-07 17:09:14,914 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-12-07 17:09:14,936 INFO L76 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. [2019-12-07 17:09:14,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:09:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-12-07 17:09:14,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 17:09:14,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:14,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2019-12-07 17:09:14,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:14,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2019-12-07 17:09:14,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:14,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2019-12-07 17:09:14,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:14,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2019-12-07 17:09:14,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 17:09:14,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 17:09:14,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-12-07 17:09:14,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:09:14,939 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-12-07 17:09:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-12-07 17:09:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-12-07 17:09:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:09:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-12-07 17:09:14,941 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-12-07 17:09:14,941 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-12-07 17:09:14,941 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:09:14,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-12-07 17:09:14,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:09:14,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:14,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:14,942 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-12-07 17:09:14,942 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 17:09:14,943 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2019-12-07 17:09:14,943 INFO L796 eck$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 [2019-12-07 17:09:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2019-12-07 17:09:14,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:14,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859042446] [2019-12-07 17:09:14,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:14,956 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:14,957 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-12-07 17:09:14,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:14,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797992034] [2019-12-07 17:09:14,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:14,961 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2019-12-07 17:09:14,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:14,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788312311] [2019-12-07 17:09:14,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:14,974 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:14,984 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:14,984 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:14,984 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:14,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:14,984 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:09:14,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:14,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:14,984 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:14,984 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-12-07 17:09:14,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:14,984 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:14,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:14,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:14,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:14,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,018 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:15,018 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:15,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:15,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:15,024 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:15,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:15,027 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:09:15,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:15,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:09:15,216 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:15,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:15,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:15,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:15,216 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:09:15,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:15,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:15,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-12-07 17:09:15,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:15,216 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:15,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,250 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:15,251 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,253 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 [2019-12-07 17:09:15,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:15,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:15,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:15,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:15,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:15,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:09:15,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:15,257 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:09:15,259 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:09:15,259 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,261 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:09:15,261 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:09:15,261 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:09:15,261 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 [] [2019-12-07 17:09:15,263 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:09:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:15,277 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:15,277 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:15,280 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:09:15,280 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:15,280 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 [2019-12-07 17:09:15,280 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-12-07 17:09:15,289 INFO L76 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. [2019-12-07 17:09:15,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:09:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 17:09:15,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-12-07 17:09:15,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:15,290 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:09:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:15,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:15,303 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:15,306 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:09:15,306 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:15,307 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 [2019-12-07 17:09:15,307 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-12-07 17:09:15,313 INFO L76 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. [2019-12-07 17:09:15,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:09:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 17:09:15,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-12-07 17:09:15,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:15,314 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:09:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:15,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:15,326 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:15,329 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:09:15,329 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:15,329 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 [2019-12-07 17:09:15,329 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-12-07 17:09:15,335 INFO L76 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. [2019-12-07 17:09:15,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:09:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 17:09:15,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2019-12-07 17:09:15,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:15,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2019-12-07 17:09:15,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:15,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 17:09:15,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:15,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2019-12-07 17:09:15,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 17:09:15,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2019-12-07 17:09:15,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 17:09:15,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 17:09:15,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2019-12-07 17:09:15,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:09:15,339 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2019-12-07 17:09:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2019-12-07 17:09:15,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-12-07 17:09:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:09:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-12-07 17:09:15,341 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-12-07 17:09:15,341 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-12-07 17:09:15,341 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 17:09:15,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-12-07 17:09:15,341 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:09:15,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:15,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:15,342 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-12-07 17:09:15,342 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:09:15,342 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2019-12-07 17:09:15,342 INFO L796 eck$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 [2019-12-07 17:09:15,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:15,342 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2019-12-07 17:09:15,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:15,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386054711] [2019-12-07 17:09:15,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:15,350 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2019-12-07 17:09:15,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:15,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670737127] [2019-12-07 17:09:15,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:15,354 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:15,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2019-12-07 17:09:15,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:15,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755453539] [2019-12-07 17:09:15,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:15,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755453539] [2019-12-07 17:09:15,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314495995] [2019-12-07 17:09:15,396 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:15,413 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-12-07 17:09:15,413 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:09:15,414 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:09:15,414 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:15,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:09:15,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-12-07 17:09:15,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193840646] [2019-12-07 17:09:15,442 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:15,442 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:15,442 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:15,442 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:15,442 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:09:15,443 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,443 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:15,443 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:15,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-12-07 17:09:15,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:15,443 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:15,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:15,480 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:15,480 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:15,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:15,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:15,486 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:15,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:15,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:15,494 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:15,498 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:15,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:09:15,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:17,661 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:09:17,663 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:17,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:17,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:17,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:17,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:09:17,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:17,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:17,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:17,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-12-07 17:09:17,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:17,663 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:17,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:17,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:17,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:17,698 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:17,698 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:17,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:09:17,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:17,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:17,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:17,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:17,703 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:17,703 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:17,706 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:17,709 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 [2019-12-07 17:09:17,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:17,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:17,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:17,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:17,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:17,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:17,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:17,717 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 [2019-12-07 17:09:17,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:17,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:17,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:17,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:17,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:17,720 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:09:17,720 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:17,721 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-12-07 17:09:17,722 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:17,726 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 [2019-12-07 17:09:17,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:17,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:17,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:17,728 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:09:17,729 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-12-07 17:09:17,729 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-12-07 17:09:17,733 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:17,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:09:17,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:17,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:17,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:17,738 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:09:17,739 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-12-07 17:09:17,739 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-12-07 17:09:17,743 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:17,747 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 [2019-12-07 17:09:17,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:17,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:17,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:17,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:17,749 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:09:17,750 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:09:17,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:17,753 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:09:17,759 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 17:09:17,760 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:17,764 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:09:17,764 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:09:17,764 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:09:17,764 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 [] [2019-12-07 17:09:17,765 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:09:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:17,785 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:17,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:17,789 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:09:17,789 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:17,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:17,857 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 [2019-12-07 17:09:17,857 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-12-07 17:09:17,877 INFO L76 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. [2019-12-07 17:09:17,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:09:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-12-07 17:09:17,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2019-12-07 17:09:17,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:17,878 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:09:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:17,893 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:17,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:17,897 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:09:17,897 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:17,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,927 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,927 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:17,956 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 [2019-12-07 17:09:17,956 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-12-07 17:09:17,973 INFO L76 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. [2019-12-07 17:09:17,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:09:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 17:09:17,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2019-12-07 17:09:17,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:17,974 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:09:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:17,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:17,987 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:17,989 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:09:17,990 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:17,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:18,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:18,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:18,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:09:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:18,054 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 [2019-12-07 17:09:18,054 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-12-07 17:09:18,071 INFO L76 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. [2019-12-07 17:09:18,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:09:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 17:09:18,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2019-12-07 17:09:18,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:18,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2019-12-07 17:09:18,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:18,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2019-12-07 17:09:18,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:18,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2019-12-07 17:09:18,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 17:09:18,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2019-12-07 17:09:18,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 17:09:18,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 17:09:18,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2019-12-07 17:09:18,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:09:18,075 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-12-07 17:09:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2019-12-07 17:09:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2019-12-07 17:09:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 17:09:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-12-07 17:09:18,076 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-12-07 17:09:18,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:09:18,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:09:18,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:09:18,079 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2019-12-07 17:09:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:09:18,161 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2019-12-07 17:09:18,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 17:09:18,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2019-12-07 17:09:18,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:09:18,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2019-12-07 17:09:18,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 17:09:18,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 17:09:18,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2019-12-07 17:09:18,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:09:18,163 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2019-12-07 17:09:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2019-12-07 17:09:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-12-07 17:09:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:09:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2019-12-07 17:09:18,165 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-12-07 17:09:18,165 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-12-07 17:09:18,165 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 17:09:18,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2019-12-07 17:09:18,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:09:18,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:09:18,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:09:18,166 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-12-07 17:09:18,166 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 17:09:18,166 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2019-12-07 17:09:18,166 INFO L796 eck$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 [2019-12-07 17:09:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2019-12-07 17:09:18,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:18,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954646093] [2019-12-07 17:09:18,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:18,174 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:18,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:18,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2019-12-07 17:09:18,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:18,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579687566] [2019-12-07 17:09:18,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:18,179 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:18,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2019-12-07 17:09:18,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:09:18,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37319071] [2019-12-07 17:09:18,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:09:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:09:18,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:09:18,221 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:18,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:18,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:18,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:18,222 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:09:18,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:18,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:18,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:18,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-12-07 17:09:18,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:18,222 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:18,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:18,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:18,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:18,273 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:18,273 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:18,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:18,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:18,279 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:18,279 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:18,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:18,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:18,286 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:09:18,286 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:18,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:09:18,289 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:18,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:09:18,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:09:18,831 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:09:18,832 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:09:18,832 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:09:18,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:09:18,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:09:18,833 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:09:18,833 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:09:18,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:09:18,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:09:18,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-12-07 17:09:18,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:09:18,833 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:09:18,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:18,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:18,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:09:18,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:09:18,882 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:18,884 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 [2019-12-07 17:09:18,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:18,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:18,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:18,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:18,887 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:18,887 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:18,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:18,892 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 [2019-12-07 17:09:18,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:18,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:18,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:18,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:18,894 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:09:18,894 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:09:18,896 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:18,900 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 [2019-12-07 17:09:18,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:09:18,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:09:18,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:09:18,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:09:18,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:09:18,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:09:18,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:09:18,904 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:09:18,908 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:09:18,908 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-vcloud-master/worker/run_dir_743f8f21-bada-4f3e-8754-c3e75455b9dc/bin/uautomizer/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 [2019-12-07 17:09:18,911 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:09:18,911 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:09:18,911 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:09:18,911 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-12-07 17:09:18,912 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:09:18,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:09:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:18,924 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:09:18,924 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:09:18,927 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:09:18,927 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:09:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:09:18,940 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 [2019-12-07 17:09:18,940 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-12-07 17:09:18,950 INFO L76 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. [2019-12-07 17:09:18,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:09:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 17:09:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 17:09:18,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2019-12-07 17:09:18,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:18,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2019-12-07 17:09:18,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:18,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2019-12-07 17:09:18,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:09:18,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2019-12-07 17:09:18,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:09:18,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2019-12-07 17:09:18,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:09:18,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:09:18,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:09:18,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:09:18,952 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:09:18,952 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:09:18,952 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:09:18,952 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 17:09:18,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:09:18,953 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:09:18,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:09:18,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:09:18 BoogieIcfgContainer [2019-12-07 17:09:18,957 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:09:18,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:09:18,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:09:18,957 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:09:18,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:09:09" (3/4) ... [2019-12-07 17:09:18,959 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:09:18,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:09:18,961 INFO L168 Benchmark]: Toolchain (without parser) took 10071.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -118.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:18,961 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:09:18,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:18,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:09:18,962 INFO L168 Benchmark]: Boogie Preprocessor took 11.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:09:18,962 INFO L168 Benchmark]: RCFGBuilder took 140.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:18,962 INFO L168 Benchmark]: BuchiAutomizer took 9714.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:18,963 INFO L168 Benchmark]: Witness Printer took 2.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:09:18,965 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 9714.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 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 9.6s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 8.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. 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, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf97 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 7.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...