./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 554582d6fc3de8e87f5dd30e5019302b6e1b96be .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 08:37:46,834 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 08:37:46,835 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 08:37:46,843 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 08:37:46,843 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 08:37:46,844 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 08:37:46,844 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 08:37:46,846 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 08:37:46,847 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 08:37:46,847 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 08:37:46,848 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 08:37:46,848 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 08:37:46,849 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 08:37:46,850 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 08:37:46,850 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 08:37:46,851 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 08:37:46,852 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 08:37:46,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 08:37:46,854 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 08:37:46,855 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 08:37:46,856 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 08:37:46,857 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 08:37:46,858 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 08:37:46,859 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 08:37:46,859 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 08:37:46,859 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 08:37:46,860 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 08:37:46,861 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 08:37:46,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 08:37:46,862 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 08:37:46,862 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 08:37:46,863 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 08:37:46,863 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 08:37:46,863 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 08:37:46,864 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 08:37:46,864 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 08:37:46,864 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 08:37:46,876 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 08:37:46,876 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 08:37:46,877 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 08:37:46,877 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 08:37:46,877 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 08:37:46,877 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 08:37:46,877 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 08:37:46,877 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 08:37:46,877 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 08:37:46,878 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 08:37:46,878 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 08:37:46,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 08:37:46,878 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 08:37:46,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 08:37:46,878 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 08:37:46,878 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 08:37:46,878 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 08:37:46,879 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 08:37:46,879 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 08:37:46,879 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 08:37:46,879 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 08:37:46,879 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 08:37:46,879 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 08:37:46,879 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 08:37:46,879 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 08:37:46,879 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 08:37:46,880 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 08:37:46,880 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 08:37:46,880 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 08:37:46,881 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_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2018-11-23 08:37:46,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 08:37:46,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 08:37:46,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 08:37:46,912 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 08:37:46,913 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 08:37:46,913 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-23 08:37:46,949 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/data/e9fddd3c7/b3cfdad40c01414aa1b91aad12ed9ee3/FLAG49e27f28a [2018-11-23 08:37:47,251 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 08:37:47,251 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-23 08:37:47,255 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/data/e9fddd3c7/b3cfdad40c01414aa1b91aad12ed9ee3/FLAG49e27f28a [2018-11-23 08:37:47,265 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/data/e9fddd3c7/b3cfdad40c01414aa1b91aad12ed9ee3 [2018-11-23 08:37:47,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 08:37:47,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 08:37:47,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 08:37:47,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 08:37:47,271 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 08:37:47,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5fba41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47, skipping insertion in model container [2018-11-23 08:37:47,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 08:37:47,293 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 08:37:47,402 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:37:47,405 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 08:37:47,414 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:37:47,423 INFO L195 MainTranslator]: Completed translation [2018-11-23 08:37:47,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47 WrapperNode [2018-11-23 08:37:47,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 08:37:47,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 08:37:47,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 08:37:47,424 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 08:37:47,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 08:37:47,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 08:37:47,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 08:37:47,442 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 08:37:47,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... [2018-11-23 08:37:47,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 08:37:47,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 08:37:47,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 08:37:47,452 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 08:37:47,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure p [2018-11-23 08:37:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2018-11-23 08:37:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 08:37:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 08:37:47,610 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 08:37:47,610 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 08:37:47,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:47 BoogieIcfgContainer [2018-11-23 08:37:47,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 08:37:47,611 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 08:37:47,611 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 08:37:47,614 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 08:37:47,614 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:37:47,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 08:37:47" (1/3) ... [2018-11-23 08:37:47,615 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ca2207f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 08:37:47, skipping insertion in model container [2018-11-23 08:37:47,615 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:37:47,615 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:47" (2/3) ... [2018-11-23 08:37:47,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ca2207f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 08:37:47, skipping insertion in model container [2018-11-23 08:37:47,616 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 08:37:47,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:47" (3/3) ... [2018-11-23 08:37:47,617 INFO L375 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-23 08:37:47,652 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 08:37:47,653 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 08:37:47,653 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 08:37:47,653 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 08:37:47,653 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 08:37:47,653 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 08:37:47,653 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 08:37:47,653 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 08:37:47,654 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 08:37:47,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-11-23 08:37:47,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:37:47,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:37:47,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:37:47,685 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 08:37:47,685 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:37:47,685 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 08:37:47,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-11-23 08:37:47,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:37:47,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:37:47,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:37:47,687 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 08:37:47,687 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:37:47,692 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2018-11-23 08:37:47,692 INFO L796 eck$LassoCheckResult]: Loop: 11#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 12#L13true assume ~r > 0; 9#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 11#pENTRYtrue [2018-11-23 08:37:47,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:47,696 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2018-11-23 08:37:47,697 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:47,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:47,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:47,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:47,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:47,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2018-11-23 08:37:47,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:47,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:47,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:47,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:47,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:47,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2018-11-23 08:37:47,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:47,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:47,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:47,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:47,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:47,880 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:37:47,881 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:37:47,881 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:37:47,881 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:37:47,882 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:37:47,882 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:37:47,882 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:37:47,882 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:37:47,882 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 08:37:47,882 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:37:47,882 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:37:47,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:47,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:47,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:47,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:47,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:47,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:47,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:47,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,041 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:37:48,042 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,051 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,057 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,057 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,071 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,071 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,074 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,074 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,096 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,096 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,098 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,098 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,113 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,113 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,115 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,115 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,129 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,129 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,131 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,131 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,145 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,145 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,147 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,147 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,161 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,161 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,179 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:37:48,179 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,244 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:37:48,245 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:37:48,245 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:37:48,246 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:37:48,246 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:37:48,246 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:37:48,246 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:37:48,246 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:37:48,246 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:37:48,246 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 08:37:48,247 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:37:48,247 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:37:48,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,336 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:37:48,339 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:37:48,340 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 [2018-11-23 08:37:48,341 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,341 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,342 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,342 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,342 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,343 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,343 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,346 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,346 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 [2018-11-23 08:37:48,346 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,347 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,347 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,347 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,347 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,347 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,347 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,348 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,349 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 [2018-11-23 08:37:48,349 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,349 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,349 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,349 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,349 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,350 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,350 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,351 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,351 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 [2018-11-23 08:37:48,351 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,352 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,352 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,352 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,352 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,352 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,352 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,353 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,354 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 [2018-11-23 08:37:48,354 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,354 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,354 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,354 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,354 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,355 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,355 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,356 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,356 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 [2018-11-23 08:37:48,357 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,357 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,357 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,357 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,357 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,357 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,358 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,359 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,359 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 08:37:48,359 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,360 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,360 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,360 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,360 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,361 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,361 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,368 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,368 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 [2018-11-23 08:37:48,369 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,369 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,369 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,369 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,369 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:48,369 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:48,370 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,371 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,371 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-23 08:37:48,371 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 [2018-11-23 08:37:48,372 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,372 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,372 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,372 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,372 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:37:48,373 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:37:48,373 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,373 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,374 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 [2018-11-23 08:37:48,374 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,374 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,374 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,375 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,375 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:37:48,375 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:37:48,375 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,376 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,376 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 [2018-11-23 08:37:48,377 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,377 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,377 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,377 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,377 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:37:48,378 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:37:48,378 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,379 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,379 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 [2018-11-23 08:37:48,380 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,380 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,380 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,380 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,380 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:37:48,381 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:37:48,381 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,382 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,382 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 [2018-11-23 08:37:48,383 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,383 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,383 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,383 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,383 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:37:48,384 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:37:48,384 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,385 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,385 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 [2018-11-23 08:37:48,386 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,386 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,386 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,386 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,386 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:37:48,387 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:37:48,387 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,388 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:48,388 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 [2018-11-23 08:37:48,388 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:48,389 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:48,389 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:48,389 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:48,389 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:37:48,390 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:37:48,390 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:48,397 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:37:48,407 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 08:37:48,407 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 08:37:48,409 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:37:48,409 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:37:48,409 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:37:48,409 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_#in~n + 1*p_#in~r f1 = 1*p_#in~r Supporting invariants [] [2018-11-23 08:37:48,410 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:37:48,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:37:48,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:37:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:37:48,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:37:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:37:48,581 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:37:48,583 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2018-11-23 08:37:48,771 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 12 states. [2018-11-23 08:37:48,772 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 [2018-11-23 08:37:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:37:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-23 08:37:48,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-23 08:37:48,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:37:48,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-23 08:37:48,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:37:48,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-23 08:37:48,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:37:48,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2018-11-23 08:37:48,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:37:48,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2018-11-23 08:37:48,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-23 08:37:48,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-23 08:37:48,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2018-11-23 08:37:48,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:37:48,789 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-11-23 08:37:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2018-11-23 08:37:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2018-11-23 08:37:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 08:37:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-11-23 08:37:48,810 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-23 08:37:48,810 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-23 08:37:48,810 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 08:37:48,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-11-23 08:37:48,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:37:48,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:37:48,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:37:48,811 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-23 08:37:48,811 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 08:37:48,812 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2018-11-23 08:37:48,812 INFO L796 eck$LassoCheckResult]: Loop: 125#L16 assume ~n > 0; 120#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 122#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 132#L13 assume !(~r > 0); 125#L16 [2018-11-23 08:37:48,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2018-11-23 08:37:48,812 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:48,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:48,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:48,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:48,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2018-11-23 08:37:48,820 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:48,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:48,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:48,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:48,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:48,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:48,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2018-11-23 08:37:48,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:48,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:48,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:48,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:48,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:48,901 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:37:48,901 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:37:48,901 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:37:48,901 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:37:48,901 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:37:48,901 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:37:48,901 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:37:48,902 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:37:48,902 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 08:37:48,902 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:37:48,902 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:37:48,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:48,965 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:37:48,965 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:37:48,967 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,967 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,969 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,969 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:48,984 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:48,984 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:48,986 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:48,986 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:49,001 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:49,001 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:49,003 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:49,003 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:49,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:49,017 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:49,035 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:37:49,035 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:49,316 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:37:49,317 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:37:49,317 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:37:49,317 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:37:49,318 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:37:49,318 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:37:49,318 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:37:49,318 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:37:49,318 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:37:49,318 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 08:37:49,318 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:37:49,318 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:37:49,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,377 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:37:49,377 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:37:49,378 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 [2018-11-23 08:37:49,378 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:49,379 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:49,379 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:49,379 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:49,379 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:49,382 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:49,382 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:49,383 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:49,383 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 [2018-11-23 08:37:49,383 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:49,384 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:49,384 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:49,384 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:49,384 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:49,384 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:49,384 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:49,385 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:37:49,386 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 [2018-11-23 08:37:49,386 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:37:49,386 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:37:49,386 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:37:49,387 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:37:49,387 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:37:49,387 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:37:49,387 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:37:49,390 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:37:49,392 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:37:49,392 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 08:37:49,392 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:37:49,393 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:37:49,393 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:37:49,393 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2018-11-23 08:37:49,393 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:37:49,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:37:49,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:37:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:37:49,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:37:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:37:49,449 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-23 08:37:49,449 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-11-23 08:37:49,463 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 13 states. [2018-11-23 08:37:49,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 08:37:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 08:37:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-11-23 08:37:49,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-23 08:37:49,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:37:49,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-23 08:37:49,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:37:49,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-23 08:37:49,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:37:49,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2018-11-23 08:37:49,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:37:49,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2018-11-23 08:37:49,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-23 08:37:49,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-23 08:37:49,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2018-11-23 08:37:49,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:37:49,467 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2018-11-23 08:37:49,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2018-11-23 08:37:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-23 08:37:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 08:37:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2018-11-23 08:37:49,469 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-11-23 08:37:49,469 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-11-23 08:37:49,469 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 08:37:49,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2018-11-23 08:37:49,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:37:49,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:37:49,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:37:49,470 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:37:49,470 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:37:49,470 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2018-11-23 08:37:49,470 INFO L796 eck$LassoCheckResult]: Loop: 219#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 220#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 235#L13 assume ~r > 0; 219#L14 [2018-11-23 08:37:49,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:49,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2018-11-23 08:37:49,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:49,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:49,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:49,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:49,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:49,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2018-11-23 08:37:49,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:49,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:49,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:49,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:37:49,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:49,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:37:49,482 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2018-11-23 08:37:49,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:37:49,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:37:49,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:49,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:37:49,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:37:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:37:49,539 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:37:49,539 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:37:49,539 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:37:49,539 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:37:49,539 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:37:49,539 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:37:49,539 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:37:49,539 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:37:49,539 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 08:37:49,539 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:37:49,539 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:37:49,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:37:49,587 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:37:49,587 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:49,592 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:49,592 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:37:49,595 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:37:49,595 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=1, p_~m=1} Honda state: {p_#in~m=1, p_~m=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/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 [2018-11-23 08:37:49,611 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:37:49,611 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:37:49,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:37:49,630 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:01,652 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 08:38:01,655 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:01,655 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:01,656 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:01,656 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:01,656 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:38:01,656 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:01,656 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:01,656 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:01,656 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 08:38:01,656 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:01,656 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:01,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:01,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:01,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:01,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:01,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:01,709 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:01,709 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:38:01,710 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 [2018-11-23 08:38:01,710 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:01,710 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:01,710 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:01,711 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:01,711 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:01,711 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:01,711 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:01,712 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:01,713 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 [2018-11-23 08:38:01,713 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:01,713 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:01,713 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:01,714 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:01,714 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:01,714 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:01,714 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:01,717 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:01,718 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 [2018-11-23 08:38:01,718 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:01,718 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:01,718 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:01,718 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:01,719 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:01,719 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:01,719 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:01,719 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:01,720 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 [2018-11-23 08:38:01,720 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:01,720 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:01,720 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:01,720 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:01,721 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:01,721 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:01,721 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:01,722 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:01,722 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 [2018-11-23 08:38:01,722 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:01,722 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:01,722 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:01,723 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:01,723 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:01,723 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:01,723 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:01,724 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:01,724 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-23 08:38:01,724 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 [2018-11-23 08:38:01,725 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:01,725 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:01,725 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:01,725 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:01,725 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:38:01,726 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:38:01,726 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:01,727 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:01,727 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 [2018-11-23 08:38:01,727 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:01,740 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:01,740 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:01,740 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:01,740 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:38:01,742 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:38:01,742 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:01,749 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:38:01,758 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 08:38:01,758 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 08:38:01,758 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:38:01,758 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:38:01,759 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:38:01,759 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~r + 1*p_~n f1 = 1*p_~n Supporting invariants [] [2018-11-23 08:38:01,759 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:38:01,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:01,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:01,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:01,843 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:01,843 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-23 08:38:01,906 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 42 states and 50 transitions. Complement of second has 9 states. [2018-11-23 08:38:01,906 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 [2018-11-23 08:38:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-23 08:38:01,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-23 08:38:01,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:01,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 08:38:01,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:01,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-23 08:38:01,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:01,908 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2018-11-23 08:38:01,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:38:01,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2018-11-23 08:38:01,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-23 08:38:01,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-23 08:38:01,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2018-11-23 08:38:01,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:38:01,911 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-23 08:38:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2018-11-23 08:38:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2018-11-23 08:38:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-23 08:38:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2018-11-23 08:38:01,915 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-11-23 08:38:01,915 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-11-23 08:38:01,915 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 08:38:01,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2018-11-23 08:38:01,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 08:38:01,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:38:01,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:38:01,916 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:01,916 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 08:38:01,916 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2018-11-23 08:38:01,916 INFO L796 eck$LassoCheckResult]: Loop: 349#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 348#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 373#L13 assume ~r > 0; 349#L14 [2018-11-23 08:38:01,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:01,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2018-11-23 08:38:01,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:01,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:01,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:01,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:01,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:01,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:01,928 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2018-11-23 08:38:01,928 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:01,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:01,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:01,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:01,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:01,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2018-11-23 08:38:01,934 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:01,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:01,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:01,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:01,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:02,004 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:02,004 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:02,004 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:02,004 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:02,004 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:38:02,004 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:02,004 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:02,004 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:02,004 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 08:38:02,004 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:02,005 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:02,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:02,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:02,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:02,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:02,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:02,048 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:02,049 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:02,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:02,051 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:02,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:38:02,070 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:14,091 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 08:38:14,093 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:14,094 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:14,094 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:14,094 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:14,094 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:38:14,094 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:14,094 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:14,094 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:14,094 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 08:38:14,094 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:14,094 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:14,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,135 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:14,135 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:38:14,135 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 [2018-11-23 08:38:14,136 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:14,136 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:14,136 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:14,136 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:14,136 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:14,136 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:14,137 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:14,139 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:14,139 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 [2018-11-23 08:38:14,142 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:14,142 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:14,142 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:14,142 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:14,142 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:14,143 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:14,143 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:14,143 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:14,144 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 [2018-11-23 08:38:14,144 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:14,144 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:14,144 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:14,144 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:14,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:14,145 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:14,145 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:14,145 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:14,145 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 [2018-11-23 08:38:14,146 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:14,146 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:14,146 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:14,146 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:14,146 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:14,150 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:14,150 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:14,151 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:14,152 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 [2018-11-23 08:38:14,152 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:14,152 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:14,152 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:14,152 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:14,152 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:14,153 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:14,153 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:14,153 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:14,153 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-23 08:38:14,154 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 [2018-11-23 08:38:14,154 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:14,154 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:14,154 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:14,157 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:14,157 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-23 08:38:14,158 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-23 08:38:14,158 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:14,163 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:38:14,169 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-23 08:38:14,169 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 08:38:14,170 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:38:14,170 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:38:14,170 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:38:14,170 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2018-11-23 08:38:14,170 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:38:14,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:14,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:14,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:14,237 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:14,237 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-23 08:38:14,285 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2018-11-23 08:38:14,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 08:38:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-23 08:38:14,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 08:38:14,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:14,286 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:38:14,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:14,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:14,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:14,355 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:14,355 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-23 08:38:14,424 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2018-11-23 08:38:14,426 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 [2018-11-23 08:38:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-23 08:38:14,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 08:38:14,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:14,427 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:38:14,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:14,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:14,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:14,502 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:14,502 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-23 08:38:14,560 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 53 states and 68 transitions. Complement of second has 8 states. [2018-11-23 08:38:14,561 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 [2018-11-23 08:38:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 08:38:14,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 08:38:14,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:14,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-23 08:38:14,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:14,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-23 08:38:14,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:14,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2018-11-23 08:38:14,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-11-23 08:38:14,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2018-11-23 08:38:14,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-23 08:38:14,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-23 08:38:14,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2018-11-23 08:38:14,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:38:14,565 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-23 08:38:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2018-11-23 08:38:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2018-11-23 08:38:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 08:38:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-11-23 08:38:14,567 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-11-23 08:38:14,567 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-11-23 08:38:14,567 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 08:38:14,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2018-11-23 08:38:14,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-23 08:38:14,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:38:14,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:38:14,568 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:14,568 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-23 08:38:14,568 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2018-11-23 08:38:14,568 INFO L796 eck$LassoCheckResult]: Loop: 718#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 729#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 730#L13 assume !(~r > 0); 735#L16 assume ~n > 0; 716#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 719#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 736#L13 assume ~r > 0; 718#L14 [2018-11-23 08:38:14,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2018-11-23 08:38:14,569 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:14,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:14,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:14,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:14,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:14,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2018-11-23 08:38:14,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:14,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:14,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:14,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:14,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:14,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2018-11-23 08:38:14,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:14,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:14,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:14,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:14,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 08:38:14,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 08:38:14,623 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 08:38:14,635 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 08:38:14,646 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 08:38:14,646 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 08:38:14,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 08:38:14,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 08:38:14,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-23 08:38:14,796 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:14,796 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:14,796 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:14,796 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:14,796 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:38:14,796 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:14,796 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:14,796 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:14,796 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 08:38:14,796 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:14,796 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:14,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:14,842 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:14,842 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:14,844 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:14,844 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:14,846 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:14,846 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:14,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:14,862 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:14,863 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:14,864 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:14,879 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:14,879 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:14,881 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:14,881 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:14,897 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:14,897 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:14,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:38:14,917 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:21,261 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:38:21,264 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:21,264 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:21,264 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:21,264 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:21,264 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:38:21,264 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,264 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:21,264 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:21,264 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 08:38:21,265 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:21,265 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:21,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,322 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:21,322 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:38:21,323 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 [2018-11-23 08:38:21,323 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,323 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,323 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,323 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,324 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,324 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,324 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,325 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:21,325 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 [2018-11-23 08:38:21,325 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,325 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,325 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,326 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,326 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,326 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,326 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,326 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:21,327 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 [2018-11-23 08:38:21,327 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,327 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,327 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,327 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,327 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,328 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,328 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,328 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:21,330 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 [2018-11-23 08:38:21,331 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,331 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,331 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,331 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,331 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,332 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,332 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,335 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:38:21,338 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:38:21,338 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 08:38:21,338 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:38:21,339 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:38:21,339 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:38:21,339 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2018-11-23 08:38:21,339 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:38:21,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:21,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:21,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:21,432 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-23 08:38:21,432 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2018-11-23 08:38:21,489 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9. Second operand 7 states. Result 104 states and 131 transitions. Complement of second has 26 states. [2018-11-23 08:38:21,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 08:38:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 08:38:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2018-11-23 08:38:21,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2018-11-23 08:38:21,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:21,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2018-11-23 08:38:21,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:21,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2018-11-23 08:38:21,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:21,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2018-11-23 08:38:21,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-11-23 08:38:21,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2018-11-23 08:38:21,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2018-11-23 08:38:21,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-23 08:38:21,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2018-11-23 08:38:21,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:38:21,495 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2018-11-23 08:38:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2018-11-23 08:38:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2018-11-23 08:38:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-23 08:38:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2018-11-23 08:38:21,499 INFO L728 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2018-11-23 08:38:21,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 08:38:21,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 08:38:21,502 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2018-11-23 08:38:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:21,540 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2018-11-23 08:38:21,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 08:38:21,541 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2018-11-23 08:38:21,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-23 08:38:21,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2018-11-23 08:38:21,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-11-23 08:38:21,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-23 08:38:21,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2018-11-23 08:38:21,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:38:21,543 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2018-11-23 08:38:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2018-11-23 08:38:21,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2018-11-23 08:38:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 08:38:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-23 08:38:21,545 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-23 08:38:21,545 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-23 08:38:21,545 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 08:38:21,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2018-11-23 08:38:21,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 08:38:21,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:38:21,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:38:21,546 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:21,546 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 08:38:21,546 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2018-11-23 08:38:21,546 INFO L796 eck$LassoCheckResult]: Loop: 1142#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1154#L13 assume !(~r > 0); 1148#L16 assume ~n > 0; 1141#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1142#pENTRY [2018-11-23 08:38:21,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2018-11-23 08:38:21,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:21,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:21,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:21,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,553 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2018-11-23 08:38:21,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:21,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:21,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:21,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2018-11-23 08:38:21,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:21,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:21,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:21,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,613 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:21,613 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:21,613 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:21,613 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:21,613 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:38:21,613 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,613 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:21,613 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:21,613 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 08:38:21,613 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:21,613 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:21,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,647 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:21,647 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,650 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:21,650 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:21,652 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:21,652 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,667 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:21,667 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:21,669 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:21,669 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:21,684 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,700 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:38:21,700 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:21,715 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:38:21,716 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:21,716 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:21,717 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:21,717 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:21,717 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:38:21,717 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,717 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:21,717 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:21,717 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 08:38:21,717 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:21,717 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:21,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,789 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:21,790 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:38:21,790 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 [2018-11-23 08:38:21,790 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,790 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,791 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,791 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,791 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,791 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,791 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,792 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:21,792 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 [2018-11-23 08:38:21,792 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,792 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,792 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,792 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,793 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,793 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,793 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,793 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:21,794 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 [2018-11-23 08:38:21,794 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,794 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,794 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,794 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,794 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,794 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,795 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,795 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:21,795 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 [2018-11-23 08:38:21,795 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:21,796 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:21,796 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:21,796 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:21,796 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:21,796 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:21,796 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:21,797 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:38:21,798 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:38:21,798 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 08:38:21,799 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:38:21,799 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:38:21,799 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:38:21,799 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-11-23 08:38:21,799 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:38:21,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:21,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:21,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:21,858 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:21,859 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-23 08:38:21,896 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 62 states and 70 transitions. Complement of second has 13 states. [2018-11-23 08:38:21,897 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 [2018-11-23 08:38:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-23 08:38:21,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-23 08:38:21,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:21,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-23 08:38:21,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:21,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-23 08:38:21,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:21,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2018-11-23 08:38:21,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 08:38:21,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2018-11-23 08:38:21,900 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-23 08:38:21,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-23 08:38:21,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2018-11-23 08:38:21,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 08:38:21,901 INFO L705 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-11-23 08:38:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2018-11-23 08:38:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-11-23 08:38:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 08:38:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-23 08:38:21,902 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-23 08:38:21,902 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-23 08:38:21,903 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-23 08:38:21,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2018-11-23 08:38:21,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 08:38:21,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 08:38:21,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 08:38:21,904 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:21,904 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 08:38:21,904 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2018-11-23 08:38:21,904 INFO L796 eck$LassoCheckResult]: Loop: 1304#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1324#L13 assume !(~r > 0); 1310#L16 assume ~n > 0; 1302#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1304#pENTRY [2018-11-23 08:38:21,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2018-11-23 08:38:21,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:21,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:21,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:21,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,914 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2018-11-23 08:38:21,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:21,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:21,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:21,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:21,921 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2018-11-23 08:38:21,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 08:38:21,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 08:38:21,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:21,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 08:38:21,965 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:21,965 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:21,965 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:21,965 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:21,965 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 08:38:21,965 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:21,965 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:21,965 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:21,965 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-23 08:38:21,965 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:21,965 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:21,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:21,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,001 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:22,001 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:22,008 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:22,008 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:22,010 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:22,011 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:22,030 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:22,030 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:22,033 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:22,033 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0, p_#in~r=0} Honda state: {p_#in~m=0, p_#in~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:22,048 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:22,048 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:22,050 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:22,050 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:22,065 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:22,065 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:22,067 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 08:38:22,067 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:22,087 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 08:38:22,087 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_402e0324-dc43-4316-a64b-fa0f4fb1652c/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:22,103 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 08:38:22,103 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 08:38:22,119 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 08:38:22,120 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 08:38:22,120 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 08:38:22,120 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 08:38:22,120 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 08:38:22,120 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 08:38:22,120 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 08:38:22,120 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 08:38:22,120 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 08:38:22,120 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-23 08:38:22,120 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 08:38:22,120 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 08:38:22,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 08:38:22,164 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 08:38:22,164 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 08:38:22,165 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 [2018-11-23 08:38:22,165 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:22,165 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:22,165 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:22,165 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:22,165 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:22,165 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:22,166 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:22,166 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:22,166 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 [2018-11-23 08:38:22,166 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:22,166 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:22,166 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:22,166 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:22,167 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:22,167 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:22,167 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:22,167 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:22,167 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 [2018-11-23 08:38:22,168 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:22,168 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:22,168 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:22,168 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:22,168 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:22,168 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:22,168 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:22,168 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 08:38:22,168 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 [2018-11-23 08:38:22,169 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 08:38:22,169 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 08:38:22,169 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 08:38:22,169 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 08:38:22,169 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 08:38:22,169 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 08:38:22,169 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 08:38:22,170 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 08:38:22,170 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 08:38:22,170 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 08:38:22,170 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 08:38:22,171 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 08:38:22,171 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 08:38:22,171 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-11-23 08:38:22,171 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 08:38:22,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:22,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:22,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:22,224 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:22,224 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 08:38:22,242 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2018-11-23 08:38:22,243 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 [2018-11-23 08:38:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-23 08:38:22,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-23 08:38:22,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:22,243 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:38:22,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:22,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:22,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:22,275 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:22,275 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 08:38:22,299 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2018-11-23 08:38:22,299 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 [2018-11-23 08:38:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-23 08:38:22,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-23 08:38:22,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:22,300 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 08:38:22,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:22,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:22,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 08:38:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:22,336 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 08:38:22,336 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 08:38:22,354 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 53 transitions. Complement of second has 12 states. [2018-11-23 08:38:22,354 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 [2018-11-23 08:38:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 08:38:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 08:38:22,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-23 08:38:22,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:22,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2018-11-23 08:38:22,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:22,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2018-11-23 08:38:22,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 08:38:22,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2018-11-23 08:38:22,356 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 08:38:22,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2018-11-23 08:38:22,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 08:38:22,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 08:38:22,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 08:38:22,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 08:38:22,357 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:38:22,357 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:38:22,357 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:38:22,357 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-23 08:38:22,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 08:38:22,357 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 08:38:22,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 08:38:22,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 08:38:22 BoogieIcfgContainer [2018-11-23 08:38:22,362 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 08:38:22,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 08:38:22,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 08:38:22,362 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 08:38:22,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:47" (3/4) ... [2018-11-23 08:38:22,365 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 08:38:22,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 08:38:22,365 INFO L168 Benchmark]: Toolchain (without parser) took 35097.25 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 278.4 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -137.4 MB). Peak memory consumption was 141.0 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:22,366 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:38:22,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.99 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:22,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.95 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:22,367 INFO L168 Benchmark]: Boogie Preprocessor took 9.83 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:38:22,367 INFO L168 Benchmark]: RCFGBuilder took 158.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:22,367 INFO L168 Benchmark]: BuchiAutomizer took 34750.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 116.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.4 MB). Peak memory consumption was 161.7 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:22,367 INFO L168 Benchmark]: Witness Printer took 2.76 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:38:22,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.99 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 17.95 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.83 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 158.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 34750.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 116.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.4 MB). Peak memory consumption was 161.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.76 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (1 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if \old(n) + \old(r) > 0 then 1 else 0), (if \old(n) + \old(r) > 0 then \old(n) + \old(r) else \old(r)) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 5 locations. One deterministic module has 2-nested ranking function (if r + n > 0 then 1 else 0), (if r + n > 0 then r + n else n) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 7 locations. One deterministic module has affine ranking function \old(n) and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. One nondeterministic module has affine ranking function \old(n) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 34.7s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 33.1s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 146 SDtfs, 159 SDslu, 59 SDs, 0 SdLazy, 192 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf99 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf89 smp100 dnf100 smp100 tf107 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 2ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 30.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...