./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 f560e32afd5a40adf4a98abbf810cb377947c4f4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:43,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:43,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:43,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:43,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:43,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:43,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:43,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:43,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:43,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:43,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:43,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:43,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:43,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:43,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:43,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:43,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:43,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:43,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:43,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:43,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:43,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:43,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:43,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:43,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:43,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:43,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:43,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:43,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:43,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:43,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:43,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:43,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:43,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:43,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:43,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:43,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:43,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:43,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:43,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:43,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:43,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:00:43,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:43,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:43,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:43,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:43,726 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:43,726 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:00:43,726 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:00:43,736 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:00:43,737 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:00:43,737 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:00:43,737 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:00:43,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:43,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:00:43,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:43,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:43,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:00:43,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:00:43,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:00:43,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:43,738 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:00:43,739 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:43,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:00:43,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:43,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:43,739 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:00:43,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:43,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:43,740 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:00:43,741 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:00:43,741 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/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2019-10-22 09:00:43,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:43,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:43,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:43,789 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:43,789 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:43,790 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-10-22 09:00:43,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/data/66b19009a/59b87780819949e889f9bdca94b24847/FLAG669e54c31 [2019-10-22 09:00:44,235 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:44,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-10-22 09:00:44,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/data/66b19009a/59b87780819949e889f9bdca94b24847/FLAG669e54c31 [2019-10-22 09:00:44,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/bin/uautomizer/data/66b19009a/59b87780819949e889f9bdca94b24847 [2019-10-22 09:00:44,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:44,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:44,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:44,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:44,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:44,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42db30af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44, skipping insertion in model container [2019-10-22 09:00:44,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,632 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:44,646 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:44,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:44,781 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:44,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:44,859 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:44,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44 WrapperNode [2019-10-22 09:00:44,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:44,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:44,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:44,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:44,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:44,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:44,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:44,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:44,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... [2019-10-22 09:00:44,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:44,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:44,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:44,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:44,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 [2019-10-22 09:00:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:45,081 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:45,082 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 09:00:45,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:45 BoogieIcfgContainer [2019-10-22 09:00:45,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:45,083 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:00:45,083 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:00:45,086 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:00:45,086 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:45,087 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:00:44" (1/3) ... [2019-10-22 09:00:45,088 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@550ef5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:45, skipping insertion in model container [2019-10-22 09:00:45,088 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:45,088 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:44" (2/3) ... [2019-10-22 09:00:45,088 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@550ef5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:45, skipping insertion in model container [2019-10-22 09:00:45,088 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:45,088 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:45" (3/3) ... [2019-10-22 09:00:45,090 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-10-22 09:00:45,131 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:00:45,131 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:00:45,131 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:00:45,132 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:45,132 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:45,132 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:00:45,132 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:45,132 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:00:45,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:00:45,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:00:45,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:45,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:45,170 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:00:45,170 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:00:45,170 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:00:45,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:00:45,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:00:45,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:45,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:45,172 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:00:45,172 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:00:45,178 INFO L791 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 8#L20-2true [2019-10-22 09:00:45,178 INFO L793 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~i~0 > 0); 10#L20true assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 8#L20-2true [2019-10-22 09:00:45,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,183 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-10-22 09:00:45,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165235172] [2019-10-22 09:00:45,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,280 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-10-22 09:00:45,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093557461] [2019-10-22 09:00:45,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,289 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:45,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,291 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-10-22 09:00:45,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909287021] [2019-10-22 09:00:45,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:45,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909287021] [2019-10-22 09:00:45,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:45,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:45,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540481219] [2019-10-22 09:00:45,371 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:45,372 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:45,372 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:45,372 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:45,372 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:45,372 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:45,373 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:45,373 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:45,373 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-10-22 09:00:45,373 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:45,373 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:45,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,466 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:45,467 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 [2019-10-22 09:00:45,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:45,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:45,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:45,483 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/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 [2019-10-22 09:00:45,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:45,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:45,499 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:45,500 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/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 [2019-10-22 09:00:45,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:45,504 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 [2019-10-22 09:00:45,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:45,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:45,525 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:45,527 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:45,527 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:45,527 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:45,527 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:45,527 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:45,527 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:45,527 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:45,527 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:45,527 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-10-22 09:00:45,528 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:45,528 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:45,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,591 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:45,596 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:45,598 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 [2019-10-22 09:00:45,599 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:45,599 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:45,599 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:45,600 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:45,603 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:45,603 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:45,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:45,614 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 [2019-10-22 09:00:45,615 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:45,615 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:45,615 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:45,615 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:45,617 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:45,617 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:45,625 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:45,626 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 [2019-10-22 09:00:45,631 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:45,631 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:45,632 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:45,632 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:45,632 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:45,633 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:45,633 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:45,651 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:45,654 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:45,655 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:45,656 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:45,657 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:45,657 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:45,657 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 09:00:45,660 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:45,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:45,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:45,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:45,703 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:45,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:45,732 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 [2019-10-22 09:00:45,734 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 09:00:45,781 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 8 states. [2019-10-22 09:00:45,782 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 [2019-10-22 09:00:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2019-10-22 09:00:45,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-10-22 09:00:45,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:45,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 09:00:45,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:45,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-10-22 09:00:45,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:45,788 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-10-22 09:00:45,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:00:45,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-10-22 09:00:45,795 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 09:00:45,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 09:00:45,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-10-22 09:00:45,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:45,796 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 09:00:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-10-22 09:00:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 09:00:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 09:00:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-10-22 09:00:45,818 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 09:00:45,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:45,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:45,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:45,821 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. Second operand 3 states. [2019-10-22 09:00:45,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:45,831 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-10-22 09:00:45,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:45,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-10-22 09:00:45,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:00:45,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2019-10-22 09:00:45,833 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 09:00:45,833 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 09:00:45,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-10-22 09:00:45,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:45,834 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:00:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-10-22 09:00:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-10-22 09:00:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 09:00:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-10-22 09:00:45,835 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:00:45,835 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:00:45,835 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:00:45,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-10-22 09:00:45,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:00:45,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:45,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:45,836 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:00:45,836 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:00:45,836 INFO L791 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 93#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 94#L20-2 assume !!(main_~i~0 > 0); 97#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 95#L20-2 [2019-10-22 09:00:45,836 INFO L793 eck$LassoCheckResult]: Loop: 95#L20-2 assume !!(main_~i~0 > 0); 96#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 95#L20-2 [2019-10-22 09:00:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-10-22 09:00:45,837 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998470326] [2019-10-22 09:00:45,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,856 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:45,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-10-22 09:00:45,859 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852619671] [2019-10-22 09:00:45,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,875 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-10-22 09:00:45,877 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747095094] [2019-10-22 09:00:45,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:45,899 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:45,930 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:45,931 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:45,931 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:45,931 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:45,931 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:45,931 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:45,931 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:45,931 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:45,931 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-10-22 09:00:45,931 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:45,932 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:45,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:45,993 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:45,993 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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) [2019-10-22 09:00:46,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:46,003 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,007 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:46,007 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/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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) [2019-10-22 09:00:46,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:46,015 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,026 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:46,026 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/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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) [2019-10-22 09:00:46,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:46,034 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 [2019-10-22 09:00:46,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:46,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:46,051 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:46,054 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:46,054 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:46,054 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:46,054 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:46,054 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:46,054 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,054 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:46,054 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:46,054 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-10-22 09:00:46,054 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:46,054 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:46,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,113 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:46,113 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:46,113 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 [2019-10-22 09:00:46,114 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:46,114 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:46,114 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:46,114 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:46,116 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:46,116 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:46,120 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:46,121 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 [2019-10-22 09:00:46,121 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:46,121 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:46,122 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:46,122 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:46,126 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:46,126 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:46,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:46,136 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 [2019-10-22 09:00:46,137 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:46,137 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:46,137 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:46,137 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:46,137 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:46,138 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:46,138 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:46,144 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:46,153 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:46,153 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:46,154 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:46,154 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:46,154 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:46,154 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 09:00:46,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:46,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,180 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:46,190 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 [2019-10-22 09:00:46,191 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-10-22 09:00:46,205 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-10-22 09:00:46,205 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 [2019-10-22 09:00:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-10-22 09:00:46,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 09:00:46,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-10-22 09:00:46,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2019-10-22 09:00:46,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-10-22 09:00:46,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:00:46,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2019-10-22 09:00:46,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 09:00:46,208 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 09:00:46,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-10-22 09:00:46,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:46,208 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 09:00:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-10-22 09:00:46,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 09:00:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 09:00:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-10-22 09:00:46,209 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 09:00:46,209 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 09:00:46,209 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:00:46,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-10-22 09:00:46,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:00:46,211 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:46,211 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:46,211 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-10-22 09:00:46,211 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:00:46,211 INFO L791 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 148#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 149#L20-2 assume !!(main_~i~0 > 0); 156#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 155#L20-2 assume !!(main_~i~0 > 0); 154#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 150#L20-2 [2019-10-22 09:00:46,211 INFO L793 eck$LassoCheckResult]: Loop: 150#L20-2 assume !!(main_~i~0 > 0); 151#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 150#L20-2 [2019-10-22 09:00:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,212 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2019-10-22 09:00:46,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:46,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876585389] [2019-10-22 09:00:46,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,226 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:46,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-10-22 09:00:46,227 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:46,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644883568] [2019-10-22 09:00:46,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,232 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2019-10-22 09:00:46,232 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:46,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138757216] [2019-10-22 09:00:46,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,244 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:46,256 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:46,257 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:46,257 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:46,257 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:46,257 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:46,257 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,257 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:46,257 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:46,257 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-10-22 09:00:46,257 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:46,257 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:46,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,302 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:46,302 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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 [2019-10-22 09:00:46,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:46,312 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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) [2019-10-22 09:00:46,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:46,322 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,330 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:46,333 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:46,333 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:46,333 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:46,333 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:46,333 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:46,333 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,333 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:46,333 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:46,333 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-10-22 09:00:46,333 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:46,333 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:46,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,389 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:46,389 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:46,389 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 [2019-10-22 09:00:46,390 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:46,391 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:46,391 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:46,391 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:46,391 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:46,392 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:46,392 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:46,402 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:46,415 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:46,415 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:46,416 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:46,416 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:46,416 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:46,416 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 09:00:46,417 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,447 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:46,461 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 [2019-10-22 09:00:46,461 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 09:00:46,474 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-10-22 09:00:46,475 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 [2019-10-22 09:00:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-10-22 09:00:46,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-10-22 09:00:46,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,475 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:00:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,501 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:46,512 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 09:00:46,512 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 09:00:46,526 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-10-22 09:00:46,527 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 [2019-10-22 09:00:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-10-22 09:00:46,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-10-22 09:00:46,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,528 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:00:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:46,555 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:46,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:46,566 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 09:00:46,566 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 09:00:46,585 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 4 states. [2019-10-22 09:00:46,586 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 [2019-10-22 09:00:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-10-22 09:00:46,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-10-22 09:00:46,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-10-22 09:00:46,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-10-22 09:00:46,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:46,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-10-22 09:00:46,590 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:00:46,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 16 transitions. [2019-10-22 09:00:46,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 09:00:46,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 09:00:46,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-10-22 09:00:46,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:46,591 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-10-22 09:00:46,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-10-22 09:00:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2019-10-22 09:00:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 09:00:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-10-22 09:00:46,592 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-10-22 09:00:46,592 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-10-22 09:00:46,592 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:00:46,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-10-22 09:00:46,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:00:46,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:46,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:46,593 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 09:00:46,593 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:00:46,594 INFO L791 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 300#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 301#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-10-22 09:00:46,594 INFO L793 eck$LassoCheckResult]: Loop: 302#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 305#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-10-22 09:00:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,594 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-10-22 09:00:46,597 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:46,597 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097974415] [2019-10-22 09:00:46,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,607 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-10-22 09:00:46,608 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:46,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228038694] [2019-10-22 09:00:46,608 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,613 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 3 times [2019-10-22 09:00:46,614 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:46,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734103194] [2019-10-22 09:00:46,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:46,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:46,627 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:46,672 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:46,672 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:46,672 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:46,672 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:46,672 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:46,673 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,673 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:46,673 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:46,673 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-10-22 09:00:46,673 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:46,673 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:46,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,746 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:46,747 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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) [2019-10-22 09:00:46,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:46,756 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,760 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:46,760 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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) [2019-10-22 09:00:46,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:46,767 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c8278237-6923-441d-94f6-98f73d54f809/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) [2019-10-22 09:00:46,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:46,796 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,973 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:46,976 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:46,976 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:46,976 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:46,976 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:46,976 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:46,976 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:46,977 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:46,977 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:46,977 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-10-22 09:00:46,977 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:46,977 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:46,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:46,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:47,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:47,063 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:47,063 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:47,064 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 [2019-10-22 09:00:47,064 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:47,064 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:47,064 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:47,065 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:47,065 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:47,065 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:47,065 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:47,066 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:47,066 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 [2019-10-22 09:00:47,067 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:47,067 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:47,067 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:47,067 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:47,067 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:47,068 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:47,068 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:47,068 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:47,069 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 [2019-10-22 09:00:47,069 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:47,070 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:47,070 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:47,070 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:47,070 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:47,070 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:47,070 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:47,071 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:47,071 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 [2019-10-22 09:00:47,072 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:47,072 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:47,072 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:47,072 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:47,073 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:47,085 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:47,096 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:47,096 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 [2019-10-22 09:00:47,096 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:47,097 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:47,097 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:47,097 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:47,105 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:47,105 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:47,142 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:47,173 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-10-22 09:00:47,176 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. [2019-10-22 09:00:47,177 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:47,178 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-10-22 09:00:47,178 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:47,178 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~m~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~m~0 Supporting invariants [1*ULTIMATE.start_main_~m~0 - 1 >= 0] [2019-10-22 09:00:47,185 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 09:00:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:47,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:00:47,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:47,235 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:00:47,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:47,259 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-10-22 09:00:47,260 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-10-22 09:00:47,292 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2019-10-22 09:00:47,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 09:00:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:00:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 09:00:47,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 09:00:47,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:47,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 09:00:47,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:47,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 4 letters. [2019-10-22 09:00:47,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:47,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2019-10-22 09:00:47,294 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:47,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-10-22 09:00:47,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:00:47,295 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:00:47,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:00:47,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:47,295 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:47,295 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:47,295 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:47,295 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 09:00:47,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:47,295 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:47,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:00:47,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:00:47 BoogieIcfgContainer [2019-10-22 09:00:47,303 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:00:47,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:47,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:47,303 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:47,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:45" (3/4) ... [2019-10-22 09:00:47,308 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:00:47,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:47,310 INFO L168 Benchmark]: Toolchain (without parser) took 2689.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -161.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:47,310 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:47,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -188.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:47,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.59 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:47,311 INFO L168 Benchmark]: Boogie Preprocessor took 17.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:47,312 INFO L168 Benchmark]: RCFGBuilder took 172.24 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:47,312 INFO L168 Benchmark]: BuchiAutomizer took 2219.72 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: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:47,313 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:47,315 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 240.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -188.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.59 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 172.24 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2219.72 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: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. 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 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function i + -1 * m and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 29 SDslu, 6 SDs, 0 SdLazy, 47 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax183 hnf98 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq147 hnf94 smp100 dnf100 smp100 tf108 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...