./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 554582d6fc3de8e87f5dd30e5019302b6e1b96be .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 22:27:44,095 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:27:44,096 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:27:44,102 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:27:44,102 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:27:44,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:27:44,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:27:44,104 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:27:44,105 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:27:44,105 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:27:44,106 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:27:44,106 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:27:44,106 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:27:44,107 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:27:44,107 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:27:44,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:27:44,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:27:44,109 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:27:44,110 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:27:44,111 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:27:44,111 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:27:44,112 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:27:44,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:27:44,113 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:27:44,113 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:27:44,114 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:27:44,114 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:27:44,114 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:27:44,115 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:27:44,115 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:27:44,115 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:27:44,116 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:27:44,116 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:27:44,116 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:27:44,116 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:27:44,117 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:27:44,117 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-01 22:27:44,125 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:27:44,125 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:27:44,126 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 22:27:44,126 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 22:27:44,126 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 22:27:44,126 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 22:27:44,126 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 22:27:44,126 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 22:27:44,126 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 22:27:44,126 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 22:27:44,126 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 22:27:44,126 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 22:27:44,127 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:27:44,127 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:27:44,128 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 22:27:44,128 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:27:44,128 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 22:27:44,128 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 22:27:44,128 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 22:27:44,128 INFO L133 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_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2018-12-01 22:27:44,147 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:27:44,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:27:44,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:27:44,157 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:27:44,158 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:27:44,158 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-12-01 22:27:44,196 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/data/3d3659dec/024dff0e1c52497698b13e1cfa7ea37a/FLAGd13be6465 [2018-12-01 22:27:44,632 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:27:44,633 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-12-01 22:27:44,636 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/data/3d3659dec/024dff0e1c52497698b13e1cfa7ea37a/FLAGd13be6465 [2018-12-01 22:27:44,644 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/data/3d3659dec/024dff0e1c52497698b13e1cfa7ea37a [2018-12-01 22:27:44,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:27:44,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:27:44,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:27:44,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:27:44,649 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:27:44,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b368404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44, skipping insertion in model container [2018-12-01 22:27:44,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:27:44,663 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:27:44,745 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:27:44,747 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:27:44,755 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:27:44,763 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:27:44,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44 WrapperNode [2018-12-01 22:27:44,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:27:44,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:27:44,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:27:44,764 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:27:44,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:27:44,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:27:44,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:27:44,782 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:27:44,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... [2018-12-01 22:27:44,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:27:44,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:27:44,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:27:44,792 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:27:44,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 [2018-12-01 22:27:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure p [2018-12-01 22:27:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2018-12-01 22:27:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:27:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:27:44,939 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:27:44,940 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 22:27:44,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:27:44 BoogieIcfgContainer [2018-12-01 22:27:44,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:27:44,941 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 22:27:44,941 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 22:27:44,944 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 22:27:44,945 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 22:27:44,945 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 10:27:44" (1/3) ... [2018-12-01 22:27:44,946 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d33dea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 10:27:44, skipping insertion in model container [2018-12-01 22:27:44,946 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 22:27:44,946 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:27:44" (2/3) ... [2018-12-01 22:27:44,946 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d33dea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 10:27:44, skipping insertion in model container [2018-12-01 22:27:44,947 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 22:27:44,947 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:27:44" (3/3) ... [2018-12-01 22:27:44,948 INFO L375 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-12-01 22:27:44,991 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 22:27:44,991 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 22:27:44,991 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 22:27:44,991 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 22:27:44,991 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:27:44,991 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:27:44,992 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 22:27:44,992 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:27:44,992 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 22:27:45,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-01 22:27:45,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:45,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:27:45,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:27:45,021 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-01 22:27:45,021 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 22:27:45,021 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 22:27:45,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-01 22:27:45,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:45,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:27:45,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:27:45,022 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-01 22:27:45,022 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 22:27:45,027 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2018-12-01 22:27:45,027 INFO L796 eck$LassoCheckResult]: Loop: 11#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 12#L13true assume ~r > 0; 9#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 11#pENTRYtrue [2018-12-01 22:27:45,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:45,032 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2018-12-01 22:27:45,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:45,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:45,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:45,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:45,096 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2018-12-01 22:27:45,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:45,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:45,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:45,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:45,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2018-12-01 22:27:45,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:45,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:45,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:45,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,184 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:27:45,185 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:27:45,185 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:27:45,185 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:27:45,185 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 22:27:45,185 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,185 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:27:45,186 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:27:45,186 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 22:27:45,186 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:27:45,186 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:27:45,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,267 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:27:45,267 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 [2018-12-01 22:27:45,271 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,271 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,276 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,276 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 [2018-12-01 22:27:45,291 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,291 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,293 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,293 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 [2018-12-01 22:27:45,308 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,308 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,311 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,311 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 [2018-12-01 22:27:45,325 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,326 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,328 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,328 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,343 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,343 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,345 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,345 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,360 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,360 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,362 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,362 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,377 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,377 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 [2018-12-01 22:27:45,395 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 22:27:45,396 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,461 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 22:27:45,462 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:27:45,462 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:27:45,462 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:27:45,462 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:27:45,462 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 22:27:45,462 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,462 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:27:45,462 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:27:45,462 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 22:27:45,463 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:27:45,463 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:27:45,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,508 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:27:45,511 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 22:27:45,512 INFO L122 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 [2018-12-01 22:27:45,513 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,513 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,513 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,513 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,514 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,515 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,515 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,517 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,517 INFO L122 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 [2018-12-01 22:27:45,518 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,518 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,518 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,518 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,518 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,518 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,518 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,519 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,519 INFO L122 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 [2018-12-01 22:27:45,520 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,520 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,520 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,520 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,520 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,520 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,520 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,521 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,521 INFO L122 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 [2018-12-01 22:27:45,522 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,522 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,522 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,522 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,522 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,522 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,523 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,523 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,523 INFO L122 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 [2018-12-01 22:27:45,524 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,524 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,524 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,524 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,524 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,524 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,524 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,525 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,526 INFO L122 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 [2018-12-01 22:27:45,526 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,526 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,526 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,526 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,526 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,527 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,527 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,527 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,528 INFO L122 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 [2018-12-01 22:27:45,528 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,528 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,528 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,528 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,528 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,529 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,529 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,533 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,533 INFO L122 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 [2018-12-01 22:27:45,534 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,534 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,534 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,534 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,534 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:45,534 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:45,534 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,535 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,535 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-12-01 22:27:45,535 INFO L122 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 [2018-12-01 22:27:45,536 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,536 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,536 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,536 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,536 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:45,536 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:45,536 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,537 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,537 INFO L122 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 [2018-12-01 22:27:45,538 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,538 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,538 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,538 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,538 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:45,538 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:45,538 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,539 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,539 INFO L122 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 [2018-12-01 22:27:45,540 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,540 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,540 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,540 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,540 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:45,540 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:45,540 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,542 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,542 INFO L122 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 [2018-12-01 22:27:45,542 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,542 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,542 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,543 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,543 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:45,543 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:45,543 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,544 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,544 INFO L122 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 [2018-12-01 22:27:45,544 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,544 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,544 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,545 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,545 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:45,545 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:45,545 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,546 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,546 INFO L122 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 [2018-12-01 22:27:45,547 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,547 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,547 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,547 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,547 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:45,547 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:45,548 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,548 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:45,549 INFO L122 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 [2018-12-01 22:27:45,549 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:45,549 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:45,549 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:45,549 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:45,549 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:45,550 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:45,550 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:45,555 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 22:27:45,562 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-01 22:27:45,562 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-01 22:27:45,563 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 22:27:45,563 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 22:27:45,564 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 22:27:45,564 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_#in~n + 1*p_#in~r f1 = 1*p_#in~r Supporting invariants [] [2018-12-01 22:27:45,565 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 22:27:45,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:27:45,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:27:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:27:45,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:27:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:27:45,667 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:27:45,668 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2018-12-01 22:27:45,798 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 12 states. [2018-12-01 22:27:45,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:27:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:27:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-01 22:27:45,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-01 22:27:45,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:45,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-01 22:27:45,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:45,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-01 22:27:45,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:45,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2018-12-01 22:27:45,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:45,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2018-12-01 22:27:45,809 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-12-01 22:27:45,810 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-12-01 22:27:45,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2018-12-01 22:27:45,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 22:27:45,810 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-12-01 22:27:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2018-12-01 22:27:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2018-12-01 22:27:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-01 22:27:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-12-01 22:27:45,828 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-01 22:27:45,828 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-01 22:27:45,828 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 22:27:45,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-12-01 22:27:45,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:45,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:27:45,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:27:45,829 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-01 22:27:45,829 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 22:27:45,829 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2018-12-01 22:27:45,829 INFO L796 eck$LassoCheckResult]: Loop: 125#L16 assume ~n > 0; 120#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 122#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 132#L13 assume !(~r > 0); 125#L16 [2018-12-01 22:27:45,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2018-12-01 22:27:45,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:45,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:45,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:45,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2018-12-01 22:27:45,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:45,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:45,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:45,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2018-12-01 22:27:45,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:45,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:45,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:45,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:45,900 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:27:45,900 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:27:45,900 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:27:45,900 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:27:45,900 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 22:27:45,900 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,900 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:27:45,900 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:27:45,900 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 22:27:45,901 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:27:45,901 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:27:45,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:45,958 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:27:45,958 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/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 [2018-12-01 22:27:45,960 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,960 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,962 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,963 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,977 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,977 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,979 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,979 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:45,994 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:45,994 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:45,996 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:45,996 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:46,011 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:46,011 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:46,028 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 22:27:46,028 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:46,303 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 22:27:46,304 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:27:46,304 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:27:46,304 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:27:46,304 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:27:46,304 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 22:27:46,304 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:46,304 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:27:46,304 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:27:46,304 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 22:27:46,305 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:27:46,305 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:27:46,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,359 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:27:46,359 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 22:27:46,359 INFO L122 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 [2018-12-01 22:27:46,359 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:46,360 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:46,360 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:46,360 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:46,360 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:46,360 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:46,360 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:46,361 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:46,361 INFO L122 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 [2018-12-01 22:27:46,361 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:46,361 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:46,361 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:46,362 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:46,362 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:46,362 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:46,362 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:46,362 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:46,363 INFO L122 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 [2018-12-01 22:27:46,363 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:46,363 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:46,363 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:46,363 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:46,363 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:46,364 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:46,364 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:46,366 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 22:27:46,367 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 22:27:46,367 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 22:27:46,368 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 22:27:46,368 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 22:27:46,368 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 22:27:46,368 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2018-12-01 22:27:46,368 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 22:27:46,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:27:46,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:27:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:27:46,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:27:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:27:46,426 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-12-01 22:27:46,426 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-12-01 22:27:46,438 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 13 states. [2018-12-01 22:27:46,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-12-01 22:27:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-01 22:27:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-12-01 22:27:46,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-01 22:27:46,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:46,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2018-12-01 22:27:46,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:46,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2018-12-01 22:27:46,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:46,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2018-12-01 22:27:46,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:46,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2018-12-01 22:27:46,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-01 22:27:46,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-01 22:27:46,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2018-12-01 22:27:46,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 22:27:46,442 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2018-12-01 22:27:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2018-12-01 22:27:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-12-01 22:27:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-01 22:27:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2018-12-01 22:27:46,443 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-12-01 22:27:46,443 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-12-01 22:27:46,443 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-01 22:27:46,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2018-12-01 22:27:46,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:46,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:27:46,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:27:46,444 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:27:46,444 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 22:27:46,445 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2018-12-01 22:27:46,445 INFO L796 eck$LassoCheckResult]: Loop: 219#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 220#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 235#L13 assume ~r > 0; 219#L14 [2018-12-01 22:27:46,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:46,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2018-12-01 22:27:46,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:46,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:46,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:46,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:46,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:46,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:46,453 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2018-12-01 22:27:46,453 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:46,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:46,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:46,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:46,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:46,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:46,458 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2018-12-01 22:27:46,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:46,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:46,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:46,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:27:46,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:46,506 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:27:46,506 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:27:46,506 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:27:46,507 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:27:46,507 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 22:27:46,507 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:46,507 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:27:46,507 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:27:46,507 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 22:27:46,507 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:27:46,507 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:27:46,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:46,556 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:27:46,556 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:46,558 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:46,558 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:46,561 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:27:46,561 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=1, p_~m=1} Honda state: {p_#in~m=1, p_~m=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:46,575 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:46,575 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:46,594 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 22:27:46,594 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:27:58,614 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-01 22:27:58,616 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:27:58,616 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:27:58,616 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:27:58,616 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:27:58,616 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 22:27:58,616 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:58,617 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:27:58,617 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:27:58,617 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 22:27:58,617 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:27:58,617 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:27:58,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,669 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:27:58,669 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 22:27:58,669 INFO L122 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 [2018-12-01 22:27:58,670 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:58,670 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:58,670 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:58,670 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:58,670 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:58,671 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:58,671 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:58,671 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:58,672 INFO L122 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 [2018-12-01 22:27:58,672 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:58,672 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:58,672 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:58,672 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:58,672 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:58,673 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:58,673 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:58,676 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:58,676 INFO L122 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 [2018-12-01 22:27:58,677 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:58,677 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:58,677 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:58,677 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:58,677 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:58,677 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:58,678 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:58,678 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:58,678 INFO L122 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 [2018-12-01 22:27:58,679 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:58,679 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:58,679 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:58,679 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:58,679 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:58,679 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:58,679 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:58,680 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:58,680 INFO L122 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 [2018-12-01 22:27:58,680 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:58,680 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:58,680 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:58,680 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:58,681 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:27:58,681 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:27:58,681 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:58,681 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:58,681 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-12-01 22:27:58,682 INFO L122 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 [2018-12-01 22:27:58,682 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:58,682 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:58,682 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:58,682 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:58,682 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:58,683 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:58,683 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:58,683 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:27:58,684 INFO L122 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 [2018-12-01 22:27:58,684 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:27:58,684 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:27:58,684 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:27:58,684 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:27:58,684 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:27:58,685 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:27:58,685 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:27:58,689 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 22:27:58,694 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-01 22:27:58,695 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-01 22:27:58,695 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 22:27:58,695 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 22:27:58,695 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 22:27:58,695 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~r + 1*p_~n f1 = 1*p_~n Supporting invariants [] [2018-12-01 22:27:58,695 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 22:27:58,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:27:58,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:27:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:27:58,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:27:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:27:58,777 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:27:58,777 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-12-01 22:27:58,830 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 42 states and 50 transitions. Complement of second has 9 states. [2018-12-01 22:27:58,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:27:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:27:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-01 22:27:58,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-01 22:27:58,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:58,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-01 22:27:58,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:58,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-01 22:27:58,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:27:58,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2018-12-01 22:27:58,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:58,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2018-12-01 22:27:58,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-12-01 22:27:58,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-12-01 22:27:58,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2018-12-01 22:27:58,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 22:27:58,834 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-01 22:27:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2018-12-01 22:27:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2018-12-01 22:27:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-01 22:27:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2018-12-01 22:27:58,837 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-12-01 22:27:58,837 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-12-01 22:27:58,837 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-01 22:27:58,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2018-12-01 22:27:58,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 22:27:58,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:27:58,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:27:58,838 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:27:58,838 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 22:27:58,838 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2018-12-01 22:27:58,838 INFO L796 eck$LassoCheckResult]: Loop: 349#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 348#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 373#L13 assume ~r > 0; 349#L14 [2018-12-01 22:27:58,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:58,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2018-12-01 22:27:58,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:58,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:58,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:58,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:27:58,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:58,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:58,847 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2018-12-01 22:27:58,847 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:58,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:58,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:27:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:58,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:27:58,851 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2018-12-01 22:27:58,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:27:58,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:27:58,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:58,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:27:58,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:27:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:27:58,894 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:27:58,894 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:27:58,894 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:27:58,894 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:27:58,894 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 22:27:58,894 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:58,894 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:27:58,894 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:27:58,894 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-01 22:27:58,894 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:27:58,894 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:27:58,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:27:58,935 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:27:58,935 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:58,938 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:27:58,938 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:27:58,957 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 22:27:58,957 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:10,976 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-01 22:28:10,979 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:28:10,979 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:28:10,979 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:28:10,979 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:28:10,979 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 22:28:10,979 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:10,979 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:28:10,979 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:28:10,979 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-01 22:28:10,979 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:28:10,979 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:28:10,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:10,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:10,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:10,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:10,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:11,025 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:28:11,025 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 22:28:11,025 INFO L122 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 [2018-12-01 22:28:11,026 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:11,026 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:11,026 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:11,026 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:11,026 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:11,027 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:11,027 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:11,029 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:11,030 INFO L122 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 [2018-12-01 22:28:11,030 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:11,030 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:11,030 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:11,030 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:11,030 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:11,031 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:11,031 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:11,031 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:11,032 INFO L122 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 [2018-12-01 22:28:11,032 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:11,032 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:11,032 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:11,032 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:11,032 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:11,033 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:11,033 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:11,033 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:11,033 INFO L122 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 [2018-12-01 22:28:11,034 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:11,034 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:11,034 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:11,034 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:11,034 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:11,034 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:11,034 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:11,035 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:11,036 INFO L122 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 [2018-12-01 22:28:11,036 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:11,036 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:11,036 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:11,036 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:11,036 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:11,036 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:11,037 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:11,037 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:11,037 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-12-01 22:28:11,037 INFO L122 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 [2018-12-01 22:28:11,037 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:11,038 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:11,038 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:11,038 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:11,038 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-01 22:28:11,039 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-01 22:28:11,039 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:11,043 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 22:28:11,050 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-01 22:28:11,050 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-01 22:28:11,050 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 22:28:11,050 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 22:28:11,051 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 22:28:11,051 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2018-12-01 22:28:11,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 22:28:11,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:11,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:11,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:11,117 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:28:11,117 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-01 22:28:11,184 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2018-12-01 22:28:11,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:28:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-01 22:28:11,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-01 22:28:11,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:11,185 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 22:28:11,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:11,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:11,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:11,238 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:28:11,238 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-01 22:28:11,284 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2018-12-01 22:28:11,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:28:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-01 22:28:11,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-01 22:28:11,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:11,285 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 22:28:11,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:11,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:11,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:11,355 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:28:11,356 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-01 22:28:11,418 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 53 states and 68 transitions. Complement of second has 8 states. [2018-12-01 22:28:11,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:28:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-01 22:28:11,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-01 22:28:11,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:11,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-01 22:28:11,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:11,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2018-12-01 22:28:11,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:11,420 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2018-12-01 22:28:11,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-12-01 22:28:11,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2018-12-01 22:28:11,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-12-01 22:28:11,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-12-01 22:28:11,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2018-12-01 22:28:11,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 22:28:11,422 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-12-01 22:28:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2018-12-01 22:28:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2018-12-01 22:28:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 22:28:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-12-01 22:28:11,424 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-12-01 22:28:11,424 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-12-01 22:28:11,424 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-01 22:28:11,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2018-12-01 22:28:11,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-12-01 22:28:11,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:28:11,425 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:28:11,425 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:28:11,425 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-12-01 22:28:11,425 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2018-12-01 22:28:11,426 INFO L796 eck$LassoCheckResult]: Loop: 718#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 729#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 730#L13 assume !(~r > 0); 735#L16 assume ~n > 0; 716#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 719#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 736#L13 assume ~r > 0; 718#L14 [2018-12-01 22:28:11,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2018-12-01 22:28:11,426 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:11,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:11,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:11,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:28:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:11,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:11,432 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2018-12-01 22:28:11,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:11,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:11,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:11,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:28:11,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:11,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:11,437 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2018-12-01 22:28:11,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:11,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:11,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:11,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:28:11,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 22:28:11,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:28:11,480 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 22:28:11,486 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 22:28:11,494 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 22:28:11,494 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 22:28:11,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 22:28:11,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 22:28:11,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-01 22:28:11,622 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:28:11,622 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:28:11,622 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:28:11,622 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:28:11,623 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 22:28:11,623 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:11,623 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:28:11,623 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:28:11,623 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-01 22:28:11,623 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:28:11,623 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:28:11,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:11,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:11,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:11,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:11,672 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:28:11,673 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:11,674 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:11,674 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:11,676 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:11,676 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:11,690 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:11,690 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:11,692 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:11,692 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:11,706 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:11,706 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:11,708 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:11,708 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:11,723 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:11,723 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:11,742 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 22:28:11,742 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:17,828 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 22:28:17,831 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:28:17,831 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:28:17,831 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:28:17,831 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:28:17,832 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 22:28:17,832 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:17,832 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:28:17,832 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:28:17,832 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-01 22:28:17,832 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:28:17,832 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:28:17,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:17,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:17,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:17,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:17,893 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:28:17,894 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 22:28:17,894 INFO L122 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 [2018-12-01 22:28:17,894 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:17,894 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:17,894 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:17,894 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:17,894 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:17,895 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:17,895 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:17,895 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:17,896 INFO L122 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 [2018-12-01 22:28:17,896 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:17,896 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:17,896 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:17,896 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:17,896 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:17,897 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:17,897 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:17,897 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:17,897 INFO L122 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 [2018-12-01 22:28:17,898 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:17,898 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:17,898 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:17,898 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:17,898 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:17,898 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:17,898 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:17,899 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:17,899 INFO L122 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 [2018-12-01 22:28:17,899 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:17,899 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:17,899 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:17,900 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:17,900 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:17,900 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:17,900 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:17,903 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 22:28:17,906 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 22:28:17,906 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 22:28:17,906 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 22:28:17,906 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 22:28:17,907 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 22:28:17,907 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2018-12-01 22:28:17,907 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 22:28:17,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:17,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:17,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:17,978 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-12-01 22:28:17,979 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2018-12-01 22:28:18,030 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9. Second operand 7 states. Result 104 states and 131 transitions. Complement of second has 26 states. [2018-12-01 22:28:18,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-01 22:28:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2018-12-01 22:28:18,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2018-12-01 22:28:18,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2018-12-01 22:28:18,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2018-12-01 22:28:18,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2018-12-01 22:28:18,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-12-01 22:28:18,035 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2018-12-01 22:28:18,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2018-12-01 22:28:18,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-12-01 22:28:18,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2018-12-01 22:28:18,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 22:28:18,035 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2018-12-01 22:28:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2018-12-01 22:28:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2018-12-01 22:28:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-01 22:28:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2018-12-01 22:28:18,038 INFO L728 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2018-12-01 22:28:18,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 22:28:18,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 22:28:18,041 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2018-12-01 22:28:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:28:18,074 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2018-12-01 22:28:18,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 22:28:18,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2018-12-01 22:28:18,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-01 22:28:18,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2018-12-01 22:28:18,076 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-12-01 22:28:18,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 22:28:18,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2018-12-01 22:28:18,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 22:28:18,077 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2018-12-01 22:28:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2018-12-01 22:28:18,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2018-12-01 22:28:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 22:28:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-01 22:28:18,078 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-01 22:28:18,078 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-01 22:28:18,078 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-01 22:28:18,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2018-12-01 22:28:18,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-01 22:28:18,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:28:18,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:28:18,079 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:28:18,079 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 22:28:18,079 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2018-12-01 22:28:18,079 INFO L796 eck$LassoCheckResult]: Loop: 1142#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1154#L13 assume !(~r > 0); 1148#L16 assume ~n > 0; 1141#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1142#pENTRY [2018-12-01 22:28:18,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2018-12-01 22:28:18,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:18,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:18,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:28:18,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,085 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2018-12-01 22:28:18,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:18,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:18,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,086 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:28:18,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2018-12-01 22:28:18,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:18,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:18,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:28:18,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,127 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:28:18,127 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:28:18,127 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:28:18,127 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:28:18,128 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 22:28:18,128 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,128 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:28:18,128 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:28:18,128 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-01 22:28:18,128 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:28:18,128 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:28:18,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,181 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:28:18,181 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,182 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,182 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,184 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:18,184 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,199 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,199 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,201 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:18,201 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,216 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,216 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,232 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 22:28:18,232 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,248 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 22:28:18,249 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:28:18,249 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:28:18,249 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:28:18,249 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:28:18,249 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 22:28:18,249 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,249 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:28:18,249 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:28:18,249 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-01 22:28:18,250 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:28:18,250 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:28:18,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,295 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:28:18,295 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 22:28:18,295 INFO L122 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 [2018-12-01 22:28:18,296 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,296 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,296 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,296 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,296 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,296 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,297 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,297 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:18,297 INFO L122 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 [2018-12-01 22:28:18,298 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,298 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,298 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,298 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,298 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,298 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,299 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,299 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:18,299 INFO L122 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 [2018-12-01 22:28:18,299 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,300 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,300 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,300 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,300 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,300 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,300 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,301 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:18,301 INFO L122 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 [2018-12-01 22:28:18,301 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,301 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,301 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,301 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,302 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,302 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,302 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,303 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 22:28:18,304 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 22:28:18,304 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 22:28:18,304 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 22:28:18,304 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 22:28:18,304 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 22:28:18,305 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-12-01 22:28:18,305 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 22:28:18,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:18,354 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:28:18,354 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-12-01 22:28:18,374 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 62 states and 70 transitions. Complement of second has 13 states. [2018-12-01 22:28:18,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:28:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-01 22:28:18,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2018-12-01 22:28:18,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2018-12-01 22:28:18,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2018-12-01 22:28:18,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2018-12-01 22:28:18,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-01 22:28:18,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2018-12-01 22:28:18,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-12-01 22:28:18,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-12-01 22:28:18,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2018-12-01 22:28:18,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 22:28:18,378 INFO L705 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-01 22:28:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2018-12-01 22:28:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-12-01 22:28:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 22:28:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-12-01 22:28:18,379 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-12-01 22:28:18,379 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-12-01 22:28:18,379 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-01 22:28:18,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2018-12-01 22:28:18,379 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-01 22:28:18,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 22:28:18,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 22:28:18,380 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-01 22:28:18,380 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-01 22:28:18,380 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2018-12-01 22:28:18,380 INFO L796 eck$LassoCheckResult]: Loop: 1304#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1324#L13 assume !(~r > 0); 1310#L16 assume ~n > 0; 1302#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1304#pENTRY [2018-12-01 22:28:18,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2018-12-01 22:28:18,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:18,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:18,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:28:18,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2018-12-01 22:28:18,387 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:18,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:18,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:28:18,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,390 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2018-12-01 22:28:18,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:28:18,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:28:18,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:28:18,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:28:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:28:18,429 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:28:18,429 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:28:18,429 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:28:18,429 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:28:18,429 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 22:28:18,429 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,429 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:28:18,429 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:28:18,429 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-01 22:28:18,429 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:28:18,430 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:28:18,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,487 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:28:18,487 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,489 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,490 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,491 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:18,492 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,507 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,507 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,510 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:18,510 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0, p_#in~r=0} Honda state: {p_#in~m=0, p_#in~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,526 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,526 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,528 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:18,528 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,542 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,542 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,544 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 22:28:18,544 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,559 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 22:28:18,559 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f7d6c89c-09a1-4f5d-a699-edd42288c648/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,575 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 22:28:18,575 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 22:28:18,590 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 22:28:18,592 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 22:28:18,592 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 22:28:18,592 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 22:28:18,592 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 22:28:18,592 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 22:28:18,592 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 22:28:18,592 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 22:28:18,592 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 22:28:18,592 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-01 22:28:18,592 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 22:28:18,592 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 22:28:18,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 22:28:18,638 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 22:28:18,638 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 22:28:18,638 INFO L122 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 [2018-12-01 22:28:18,639 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,639 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,639 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,639 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,639 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,639 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,639 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,639 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:18,640 INFO L122 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 [2018-12-01 22:28:18,640 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,640 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,640 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,640 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,640 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,640 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,640 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,641 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:18,641 INFO L122 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 [2018-12-01 22:28:18,641 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,641 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,641 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,641 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,641 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,641 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,641 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,642 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 22:28:18,642 INFO L122 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 [2018-12-01 22:28:18,642 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 22:28:18,642 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 22:28:18,643 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 22:28:18,643 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 22:28:18,643 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 22:28:18,643 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 22:28:18,643 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 22:28:18,644 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 22:28:18,645 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 22:28:18,645 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 22:28:18,645 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 22:28:18,645 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 22:28:18,645 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 22:28:18,645 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-12-01 22:28:18,645 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 22:28:18,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:18,683 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:28:18,683 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-01 22:28:18,701 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2018-12-01 22:28:18,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:28:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-01 22:28:18,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-12-01 22:28:18,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,701 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 22:28:18,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:18,738 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:28:18,738 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-01 22:28:18,755 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2018-12-01 22:28:18,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:28:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-01 22:28:18,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-12-01 22:28:18,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,756 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 22:28:18,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:28:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:28:18,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:28:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:28:18,787 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 22:28:18,787 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-01 22:28:18,804 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 53 transitions. Complement of second has 12 states. [2018-12-01 22:28:18,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 22:28:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 22:28:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-01 22:28:18,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2018-12-01 22:28:18,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2018-12-01 22:28:18,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2018-12-01 22:28:18,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 22:28:18,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2018-12-01 22:28:18,807 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 22:28:18,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2018-12-01 22:28:18,807 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 22:28:18,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 22:28:18,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 22:28:18,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 22:28:18,807 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 22:28:18,807 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 22:28:18,807 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 22:28:18,807 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-01 22:28:18,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-01 22:28:18,807 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 22:28:18,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-01 22:28:18,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 10:28:18 BoogieIcfgContainer [2018-12-01 22:28:18,812 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 22:28:18,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:28:18,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:28:18,812 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:28:18,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:27:44" (3/4) ... [2018-12-01 22:28:18,815 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 22:28:18,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:28:18,815 INFO L168 Benchmark]: Toolchain (without parser) took 34169.41 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 289.9 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 124.2 MB. Max. memory is 11.5 GB. [2018-12-01 22:28:18,816 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:28:18,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.54 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:28:18,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.07 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:28:18,817 INFO L168 Benchmark]: Boogie Preprocessor took 9.52 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:28:18,818 INFO L168 Benchmark]: RCFGBuilder took 148.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-01 22:28:18,818 INFO L168 Benchmark]: BuchiAutomizer took 33871.40 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 176.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -43.2 MB). Peak memory consumption was 132.9 MB. Max. memory is 11.5 GB. [2018-12-01 22:28:18,818 INFO L168 Benchmark]: Witness Printer took 2.75 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2018-12-01 22:28:18,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.54 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.07 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.52 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 148.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 33871.40 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 176.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -43.2 MB). Peak memory consumption was 132.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.75 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (1 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if \old(n) + \old(r) > 0 then 1 else 0), (if \old(n) + \old(r) > 0 then \old(n) + \old(r) else \old(r)) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 5 locations. One deterministic module has 2-nested ranking function (if r + n > 0 then 1 else 0), (if r + n > 0 then r + n else n) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 7 locations. One deterministic module has affine ranking function \old(n) and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. One nondeterministic module has affine ranking function \old(n) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 33.8s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 32.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 146 SDtfs, 159 SDslu, 59 SDs, 0 SdLazy, 192 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf99 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf89 smp100 dnf100 smp100 tf107 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 2ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 30.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...