./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 e09e2fe0d9f978fd259d1d805e514754ab2def67 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:08:36,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:08:36,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:08:36,103 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:08:36,104 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:08:36,106 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:08:36,108 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:08:36,110 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:08:36,113 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:08:36,119 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:08:36,124 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:08:36,124 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:08:36,125 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:08:36,126 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:08:36,126 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:08:36,127 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:08:36,127 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:08:36,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:08:36,130 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:08:36,131 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:08:36,132 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:08:36,133 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:08:36,135 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:08:36,135 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:08:36,135 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:08:36,136 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:08:36,137 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:08:36,137 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:08:36,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:08:36,139 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:08:36,139 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:08:36,139 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:08:36,140 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:08:36,140 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:08:36,141 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:08:36,142 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:08:36,142 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:08:36,156 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:08:36,156 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:08:36,157 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:08:36,157 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:08:36,157 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:08:36,157 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:08:36,157 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:08:36,157 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:08:36,158 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:08:36,158 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:08:36,158 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:08:36,158 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:08:36,158 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:08:36,158 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:08:36,158 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:08:36,158 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:08:36,159 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:08:36,159 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:08:36,159 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:08:36,159 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:08:36,159 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:08:36,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:08:36,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:08:36,160 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:08:36,162 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:08:36,162 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:08:36,162 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:08:36,163 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:08:36,163 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_f2002943-71b8-42d9-91cb-9276cc02c272/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 -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2018-10-27 06:08:36,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:08:36,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:08:36,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:08:36,218 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:08:36,218 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:08:36,219 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-10-27 06:08:36,263 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/data/dda11cfab/1268ec355cb24b3fb24606d789c70db5/FLAG1ecc3357c [2018-10-27 06:08:36,613 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:08:36,613 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-10-27 06:08:36,617 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/data/dda11cfab/1268ec355cb24b3fb24606d789c70db5/FLAG1ecc3357c [2018-10-27 06:08:36,627 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/bin-2019/uautomizer/data/dda11cfab/1268ec355cb24b3fb24606d789c70db5 [2018-10-27 06:08:36,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:08:36,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:08:36,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:36,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:08:36,634 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:08:36,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140b7b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36, skipping insertion in model container [2018-10-27 06:08:36,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:08:36,656 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:08:36,764 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:36,767 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:08:36,776 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:36,784 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:08:36,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36 WrapperNode [2018-10-27 06:08:36,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:36,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:36,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:08:36,786 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:08:36,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:36,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:08:36,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:08:36,812 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:08:36,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... [2018-10-27 06:08:36,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:08:36,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:08:36,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:08:36,827 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:08:36,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:08:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:08:37,119 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:08:37,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:37 BoogieIcfgContainer [2018-10-27 06:08:37,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:08:37,121 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:08:37,121 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:08:37,124 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:08:37,125 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:37,125 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:08:36" (1/3) ... [2018-10-27 06:08:37,126 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@708fc660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:37, skipping insertion in model container [2018-10-27 06:08:37,126 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:37,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:36" (2/3) ... [2018-10-27 06:08:37,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@708fc660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:37, skipping insertion in model container [2018-10-27 06:08:37,127 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:37,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:37" (3/3) ... [2018-10-27 06:08:37,128 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-10-27 06:08:37,178 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:08:37,179 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:08:37,179 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:08:37,179 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:08:37,179 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:08:37,179 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:08:37,179 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:08:37,180 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:08:37,180 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:08:37,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:08:37,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:08:37,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:37,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:37,216 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:37,216 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:08:37,216 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:08:37,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:08:37,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:08:37,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:37,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:37,218 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:37,218 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:08:37,225 INFO L793 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-10-27 06:08:37,225 INFO L795 eck$LassoCheckResult]: Loop: 5#L18-2true assume true; 6#L17-1true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L18true assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 5#L18-2true [2018-10-27 06:08:37,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:08:37,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:37,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:37,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:37,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:37,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-10-27 06:08:37,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:37,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:37,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:37,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:37,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-10-27 06:08:37,331 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:37,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:37,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:37,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:37,537 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:08:37,552 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:37,553 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:37,553 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:37,553 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:37,554 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:37,554 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:37,554 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:37,554 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:37,554 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:08:37,554 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:37,555 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:37,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,780 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:37,781 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:37,786 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:37,786 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:37,809 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:37,809 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:37,828 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:37,829 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:37,829 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:37,829 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:37,829 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:37,830 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:37,830 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:37,830 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:37,830 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:37,830 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:08:37,830 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:37,830 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:37,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:37,974 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:37,979 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:37,980 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 [2018-10-27 06:08:37,981 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:37,981 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:37,982 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:37,982 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:37,982 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:37,984 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:37,984 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:37,992 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:37,996 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:37,997 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:37,998 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:37,999 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:37,999 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:38,000 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:08:38,001 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:38,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:38,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:38,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:38,198 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:08:38,199 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-10-27 06:08:38,248 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 27 states and 32 transitions. Complement of second has 8 states. [2018-10-27 06:08:38,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:08:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-10-27 06:08:38,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2018-10-27 06:08:38,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:38,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:08:38,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:38,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2018-10-27 06:08:38,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:38,254 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-10-27 06:08:38,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:08:38,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 11 states and 14 transitions. [2018-10-27 06:08:38,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:08:38,260 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:08:38,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-10-27 06:08:38,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:38,261 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:08:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-10-27 06:08:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-27 06:08:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-27 06:08:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-10-27 06:08:38,280 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:08:38,280 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:08:38,280 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:08:38,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-10-27 06:08:38,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:08:38,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:38,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:38,282 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:08:38,282 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:08:38,282 INFO L793 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 79#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 80#L18-2 assume true; 85#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 86#L18 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 81#L18-2 [2018-10-27 06:08:38,282 INFO L795 eck$LassoCheckResult]: Loop: 81#L18-2 assume true; 82#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 89#L18 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 81#L18-2 [2018-10-27 06:08:38,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-10-27 06:08:38,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:38,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,292 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 2 times [2018-10-27 06:08:38,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:38,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-10-27 06:08:38,299 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:38,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,341 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:38,342 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:38,342 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:38,342 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:38,342 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:38,342 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:38,342 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:38,342 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:38,342 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:08:38,342 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:38,342 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:38,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,621 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:38,622 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:38,624 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:38,624 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:38,642 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:38,642 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:38,648 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:38,648 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:38,675 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:38,676 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:38,679 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:38,679 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:38,698 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:38,699 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:38,719 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:38,720 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:38,720 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:38,720 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:38,720 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:38,720 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:38,720 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:38,721 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:38,721 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:38,721 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:08:38,721 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:38,721 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:38,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,103 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:39,103 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:39,103 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 [2018-10-27 06:08:39,104 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:39,104 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:39,104 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:39,104 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:39,106 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:39,106 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:39,111 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:39,111 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 [2018-10-27 06:08:39,112 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:39,112 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:39,112 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:39,112 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:39,114 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:39,114 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:39,121 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:39,122 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 [2018-10-27 06:08:39,122 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:39,122 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:39,123 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:39,123 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:39,123 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:39,123 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:39,123 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:39,128 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:39,130 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:39,131 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:39,131 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:39,131 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:39,131 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:39,131 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:08:39,132 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:39,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:39,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:39,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:39,222 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:08:39,223 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-10-27 06:08:39,257 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 17 states and 22 transitions. Complement of second has 7 states. [2018-10-27 06:08:39,259 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 [2018-10-27 06:08:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-10-27 06:08:39,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:08:39,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:39,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:08:39,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:39,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2018-10-27 06:08:39,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:39,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-10-27 06:08:39,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:08:39,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2018-10-27 06:08:39,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-10-27 06:08:39,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:08:39,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-10-27 06:08:39,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:39,263 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-10-27 06:08:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-10-27 06:08:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-27 06:08:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-27 06:08:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-10-27 06:08:39,265 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-10-27 06:08:39,265 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-10-27 06:08:39,265 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:08:39,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2018-10-27 06:08:39,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:08:39,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:39,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:39,266 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2018-10-27 06:08:39,267 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:08:39,267 INFO L793 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 156#L18-2 assume true; 168#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 166#L18 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 165#L18-2 assume true; 161#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 162#L18 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 157#L18-2 [2018-10-27 06:08:39,267 INFO L795 eck$LassoCheckResult]: Loop: 157#L18-2 assume true; 158#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 167#L18 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 157#L18-2 [2018-10-27 06:08:39,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash 150863075, now seen corresponding path program 2 times [2018-10-27 06:08:39,267 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:39,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:39,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:39,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:39,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:39,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 3 times [2018-10-27 06:08:39,278 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:39,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:39,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:39,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:39,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:39,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:39,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1826081864, now seen corresponding path program 2 times [2018-10-27 06:08:39,284 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:39,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:39,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:39,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:39,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:39,355 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:39,355 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:39,355 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:39,355 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:39,355 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:39,355 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:39,355 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:39,355 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:39,355 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:08:39,356 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:39,356 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:39,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,417 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:39,417 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:39,420 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:39,421 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:39,423 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:39,423 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:39,442 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:39,442 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:39,458 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:39,458 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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) [2018-10-27 06:08:39,468 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:39,469 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:39,488 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:39,489 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:39,492 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:39,492 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:39,512 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:39,512 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:39,530 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:39,531 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:39,531 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:39,532 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:39,532 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:39,532 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:39,532 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:39,532 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:39,532 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:39,532 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:08:39,532 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:39,532 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:39,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:39,628 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:39,628 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:39,628 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 [2018-10-27 06:08:39,629 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:39,629 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:39,632 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:39,632 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:39,632 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:39,633 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:39,633 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:39,635 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:39,635 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 [2018-10-27 06:08:39,635 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:39,636 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:39,636 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:39,640 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:39,640 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:39,640 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:39,641 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:39,642 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:39,642 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 [2018-10-27 06:08:39,642 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:39,643 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:39,643 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:39,643 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:39,644 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:39,644 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:39,653 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:39,653 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 [2018-10-27 06:08:39,654 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:39,654 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:39,654 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:39,654 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:39,654 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:39,655 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:39,655 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:39,659 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:39,665 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:39,665 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:39,665 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:39,665 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:39,665 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:39,666 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:08:39,666 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:39,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:39,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:39,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:39,832 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:08:39,832 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-10-27 06:08:39,920 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 21 states and 28 transitions. Complement of second has 7 states. [2018-10-27 06:08:39,921 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 [2018-10-27 06:08:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-10-27 06:08:39,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:08:39,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:39,922 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:08:39,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:39,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:39,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:39,992 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:08:39,992 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-10-27 06:08:40,000 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 21 states and 28 transitions. Complement of second has 7 states. [2018-10-27 06:08:40,000 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 [2018-10-27 06:08:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-10-27 06:08:40,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:08:40,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:40,001 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:08:40,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:40,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:40,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:40,111 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:08:40,111 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-10-27 06:08:40,121 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 6 states. [2018-10-27 06:08:40,122 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 [2018-10-27 06:08:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-10-27 06:08:40,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:08:40,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:40,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 11 letters. Loop has 3 letters. [2018-10-27 06:08:40,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:40,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2018-10-27 06:08:40,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:40,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 32 transitions. [2018-10-27 06:08:40,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:08:40,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 26 transitions. [2018-10-27 06:08:40,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-10-27 06:08:40,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:08:40,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2018-10-27 06:08:40,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:40,127 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-10-27 06:08:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2018-10-27 06:08:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 8. [2018-10-27 06:08:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-27 06:08:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-10-27 06:08:40,128 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-10-27 06:08:40,128 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-10-27 06:08:40,128 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:08:40,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2018-10-27 06:08:40,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:08:40,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:40,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:40,129 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:40,129 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:08:40,129 INFO L793 eck$LassoCheckResult]: Stem: 385#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 379#L18-2 [2018-10-27 06:08:40,129 INFO L795 eck$LassoCheckResult]: Loop: 379#L18-2 assume true; 381#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 383#L18 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 379#L18-2 [2018-10-27 06:08:40,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:40,130 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-10-27 06:08:40,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:40,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:40,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:40,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:40,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:40,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 1 times [2018-10-27 06:08:40,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:40,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:40,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:40,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:40,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:40,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:40,139 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 3 times [2018-10-27 06:08:40,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:40,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:40,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:40,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:40,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:40,184 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:40,184 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:40,184 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:40,184 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:40,184 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:40,185 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:40,185 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:40,185 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:40,185 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:08:40,185 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:40,185 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:40,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,266 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:40,266 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:40,272 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:40,272 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:40,275 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:40,275 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:40,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:40,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:40,297 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:40,298 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:40,315 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:40,315 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2002943-71b8-42d9-91cb-9276cc02c272/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 [2018-10-27 06:08:40,338 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:40,338 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:40,358 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:40,359 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:40,359 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:40,359 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:40,359 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:40,359 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:40,359 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:40,359 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:40,360 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:40,360 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:08:40,360 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:40,360 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:40,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:40,429 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:40,429 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:40,429 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 [2018-10-27 06:08:40,430 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:40,430 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:40,430 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:40,431 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:40,431 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:40,431 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:40,431 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:40,434 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:40,435 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 [2018-10-27 06:08:40,435 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:40,435 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:40,435 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:40,436 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:08:40,436 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:40,436 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:08:40,436 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:40,439 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:40,440 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 [2018-10-27 06:08:40,440 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:40,440 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:40,440 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:40,441 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:40,441 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:40,441 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:40,441 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:40,443 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:40,445 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:40,445 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:40,446 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:40,446 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:40,446 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:40,446 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:08:40,446 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:40,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:40,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:40,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:40,482 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:08:40,482 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-10-27 06:08:40,490 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 18 states and 25 transitions. Complement of second has 6 states. [2018-10-27 06:08:40,491 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 [2018-10-27 06:08:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-10-27 06:08:40,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 3 letters. [2018-10-27 06:08:40,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:40,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:08:40,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:40,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 6 letters. [2018-10-27 06:08:40,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:40,501 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 25 transitions. [2018-10-27 06:08:40,502 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:08:40,502 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2018-10-27 06:08:40,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:08:40,502 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:08:40,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:08:40,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:08:40,502 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:08:40,502 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:08:40,503 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:08:40,503 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:08:40,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:08:40,503 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:08:40,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:08:40,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:08:40 BoogieIcfgContainer [2018-10-27 06:08:40,508 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:08:40,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:08:40,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:08:40,510 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:08:40,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:37" (3/4) ... [2018-10-27 06:08:40,513 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:08:40,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:08:40,514 INFO L168 Benchmark]: Toolchain (without parser) took 3884.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 955.8 MB in the beginning and 1.2 GB in the end (delta: -201.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:40,515 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:40,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.65 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:40,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.12 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:40,516 INFO L168 Benchmark]: Boogie Preprocessor took 14.68 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:40,516 INFO L168 Benchmark]: RCFGBuilder took 293.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -212.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:40,517 INFO L168 Benchmark]: BuchiAutomizer took 3387.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:40,517 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:40,520 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.65 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 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 26.12 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.68 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 293.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -212.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3387.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 17 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 44 SDtfs, 38 SDslu, 19 SDs, 0 SdLazy, 33 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...