./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/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 cf6b3a74fd4060a216a178ad3d11a901c2ac840d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:08:32,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:08:32,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:08:32,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:08:32,602 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:08:32,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:08:32,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:08:32,604 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:08:32,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:08:32,605 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:08:32,606 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:08:32,606 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:08:32,606 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:08:32,607 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:08:32,607 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:08:32,608 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:08:32,608 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:08:32,609 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:08:32,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:08:32,611 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:08:32,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:08:32,612 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:08:32,614 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:08:32,614 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:08:32,614 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:08:32,614 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:08:32,615 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:08:32,615 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:08:32,616 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:08:32,616 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:08:32,617 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:08:32,617 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:08:32,617 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:08:32,617 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:08:32,618 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:08:32,618 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:08:32,618 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-09 01:08:32,626 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:08:32,626 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:08:32,627 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:08:32,627 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:08:32,627 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 01:08:32,627 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 01:08:32,628 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:08:32,628 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:08:32,629 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 01:08:32,629 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 01:08:32,629 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 01:08:32,629 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:08:32,629 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 01:08:32,629 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:08:32,629 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 01:08:32,629 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:08:32,630 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:08:32,630 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 01:08:32,630 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:08:32,630 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 01:08:32,630 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 01:08:32,630 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 01:08:32,631 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_a3dae2c4-437b-4786-9bca-1215cf6fe55e/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 -> cf6b3a74fd4060a216a178ad3d11a901c2ac840d [2018-12-09 01:08:32,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:08:32,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:08:32,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:08:32,657 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:08:32,657 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:08:32,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-12-09 01:08:32,693 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/data/5d5c4ece5/3c5165504fff411fbc0da306ff9c0dbe/FLAG2ac36777e [2018-12-09 01:08:33,156 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:08:33,156 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-12-09 01:08:33,160 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/data/5d5c4ece5/3c5165504fff411fbc0da306ff9c0dbe/FLAG2ac36777e [2018-12-09 01:08:33,168 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/data/5d5c4ece5/3c5165504fff411fbc0da306ff9c0dbe [2018-12-09 01:08:33,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:08:33,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:08:33,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:08:33,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:08:33,173 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:08:33,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672351b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33, skipping insertion in model container [2018-12-09 01:08:33,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:08:33,188 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:08:33,270 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:08:33,272 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:08:33,281 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:08:33,289 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:08:33,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33 WrapperNode [2018-12-09 01:08:33,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:08:33,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:08:33,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:08:33,290 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:08:33,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:08:33,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:08:33,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:08:33,311 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:08:33,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... [2018-12-09 01:08:33,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:08:33,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:08:33,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:08:33,325 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:08:33,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:08:33,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:08:33,470 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:08:33,470 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-09 01:08:33,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:08:33 BoogieIcfgContainer [2018-12-09 01:08:33,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:08:33,470 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 01:08:33,470 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 01:08:33,472 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 01:08:33,473 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 01:08:33,473 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 01:08:33" (1/3) ... [2018-12-09 01:08:33,474 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cf50bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 01:08:33, skipping insertion in model container [2018-12-09 01:08:33,474 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 01:08:33,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:08:33" (2/3) ... [2018-12-09 01:08:33,474 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cf50bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 01:08:33, skipping insertion in model container [2018-12-09 01:08:33,474 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 01:08:33,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:08:33" (3/3) ... [2018-12-09 01:08:33,475 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-12-09 01:08:33,507 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:08:33,507 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 01:08:33,507 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 01:08:33,507 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 01:08:33,507 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:08:33,507 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:08:33,507 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 01:08:33,507 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:08:33,507 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 01:08:33,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-12-09 01:08:33,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:33,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:08:33,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:08:33,536 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 01:08:33,536 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 01:08:33,536 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 01:08:33,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-12-09 01:08:33,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:33,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:08:33,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:08:33,537 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 01:08:33,538 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 01:08:33,542 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11true assume main_~x~0 > 0 && main_~y~0 > 0; 3#L12-2true [2018-12-09 01:08:33,542 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!!(0 == main_~x~0); 10#L13true assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 8#L13-2true main_~c~0 := 1 + main_~c~0; 3#L12-2true [2018-12-09 01:08:33,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-09 01:08:33,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:33,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:33,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:33,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:33,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:33,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash 42800, now seen corresponding path program 1 times [2018-12-09 01:08:33,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:33,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:33,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:33,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:33,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:33,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:33,612 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 1 times [2018-12-09 01:08:33,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:33,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:33,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:33,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:33,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:33,649 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:33,650 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:33,650 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:33,650 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:33,650 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:08:33,650 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,650 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:33,650 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:33,650 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-09 01:08:33,650 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:33,651 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:33,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:33,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:33,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:33,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:33,749 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:33,750 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,755 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:33,755 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:33,780 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:33,780 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,782 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:33,782 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:33,797 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:33,797 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,800 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:33,800 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,817 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:33,817 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:33,837 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:33,837 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,852 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:33,853 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:33,871 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:33,871 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,006 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 01:08:34,007 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:34,008 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:34,008 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:34,008 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:34,008 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 01:08:34,008 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,008 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:34,008 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:34,008 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-09 01:08:34,008 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:34,008 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:34,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,068 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:34,071 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 01:08:34,072 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,073 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,073 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,073 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,073 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,076 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:08:34,076 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:08:34,080 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,080 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,081 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,081 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,081 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,081 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,082 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:08:34,082 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:08:34,086 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,087 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,087 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,087 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:34,087 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,088 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,088 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,088 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:08:34,088 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:34,090 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,091 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,091 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,091 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:34,091 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,091 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-09 01:08:34,091 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,092 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-09 01:08:34,092 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:34,098 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 01:08:34,105 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 01:08:34,105 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 01:08:34,107 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 01:08:34,107 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 01:08:34,107 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 01:08:34,108 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-09 01:08:34,108 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 01:08:34,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:34,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:34,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:08:34,164 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 01:08:34,165 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-12-09 01:08:34,193 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 29 states and 36 transitions. Complement of second has 5 states. [2018-12-09 01:08:34,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 01:08:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 01:08:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2018-12-09 01:08:34,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2018-12-09 01:08:34,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:34,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-09 01:08:34,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:34,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2018-12-09 01:08:34,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:34,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2018-12-09 01:08:34,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:34,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2018-12-09 01:08:34,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-09 01:08:34,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-09 01:08:34,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2018-12-09 01:08:34,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:08:34,202 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-12-09 01:08:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2018-12-09 01:08:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-12-09 01:08:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-09 01:08:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-12-09 01:08:34,217 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-09 01:08:34,217 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-09 01:08:34,217 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 01:08:34,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-12-09 01:08:34,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:34,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:08:34,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:08:34,218 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-09 01:08:34,218 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 01:08:34,218 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 82#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 83#L12-2 assume !!!(0 == main_~x~0); 78#L13 [2018-12-09 01:08:34,218 INFO L796 eck$LassoCheckResult]: Loop: 78#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 84#L13-2 main_~c~0 := 1 + main_~c~0; 77#L12-2 assume !!!(0 == main_~x~0); 78#L13 [2018-12-09 01:08:34,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:34,218 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2018-12-09 01:08:34,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:34,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:34,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:34,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:34,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:34,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash 47722, now seen corresponding path program 1 times [2018-12-09 01:08:34,224 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:34,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:34,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:34,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:34,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:34,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:34,228 INFO L82 PathProgramCache]: Analyzing trace with hash 920232130, now seen corresponding path program 1 times [2018-12-09 01:08:34,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:34,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:34,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:34,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:34,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:34,247 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:34,247 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:34,247 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:34,247 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:34,248 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:08:34,248 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,248 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:34,248 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:34,248 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-09 01:08:34,248 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:34,248 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:34,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,293 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:34,293 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,297 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,297 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,313 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,314 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,316 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,316 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,342 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:34,342 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,385 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,386 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 5, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,401 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,401 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,416 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,416 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,419 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,436 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:34,436 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,455 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,455 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] [2018-12-09 01:08:34,484 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:34,485 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:34,485 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:34,485 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:34,485 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:08:34,485 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,485 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:34,485 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:34,485 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-12-09 01:08:34,485 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:34,485 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:34,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,562 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:34,562 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,564 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,564 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,567 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,567 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,582 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,582 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,597 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,597 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_4=0} Honda state: {v_rep~unnamed0~0~false_4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,600 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,600 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,602 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,602 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,616 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,616 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,618 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,618 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,633 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,633 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:34,649 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,668 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,668 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,697 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:34,698 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_4=1} Honda state: {v_rep~unnamed0~0~true_4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:34,701 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,717 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:34,717 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:34,802 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 01:08:34,803 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:34,803 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:34,804 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:34,804 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:34,804 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 01:08:34,804 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:34,804 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:34,804 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:34,804 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-12-09 01:08:34,804 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:34,804 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:34,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:34,863 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:34,864 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 01:08:34,864 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,864 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,865 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:34,865 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,865 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,865 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,865 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:08:34,865 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:34,866 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,866 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,866 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,866 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:34,866 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,867 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,867 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,867 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:08:34,867 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:34,867 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,867 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,868 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,868 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:34,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,868 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,868 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,868 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:08:34,868 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:34,869 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,869 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,869 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,869 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,869 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,869 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,870 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:08:34,870 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:08:34,872 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,872 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,872 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,872 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,872 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,872 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,873 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:08:34,873 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:08:34,880 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,880 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,881 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,881 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,881 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:34,881 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,882 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:08:34,882 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:08:34,884 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:34,884 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:34,885 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:34,885 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:34,885 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-09 01:08:34,885 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:34,887 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-12-09 01:08:34,887 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-12-09 01:08:34,920 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 01:08:34,931 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 01:08:34,931 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-09 01:08:34,931 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 01:08:34,933 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-12-09 01:08:34,934 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 01:08:34,934 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [2*ULTIMATE.start_main_~x~0 - 1 >= 0] [2018-12-09 01:08:34,936 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 01:08:34,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:34,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:34,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:08:34,979 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-12-09 01:08:34,979 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-09 01:08:35,001 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 21 transitions. Complement of second has 5 states. [2018-12-09 01:08:35,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 0 non-accepting loop states 2 accepting loop states [2018-12-09 01:08:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 01:08:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-12-09 01:08:35,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-09 01:08:35,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:35,002 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 01:08:35,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:35,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:35,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:08:35,040 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2018-12-09 01:08:35,040 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-09 01:08:35,067 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 21 states and 26 transitions. Complement of second has 6 states. [2018-12-09 01:08:35,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 01:08:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 01:08:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-12-09 01:08:35,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-09 01:08:35,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:35,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-09 01:08:35,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:35,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-09 01:08:35,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:35,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2018-12-09 01:08:35,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:35,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2018-12-09 01:08:35,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-09 01:08:35,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-09 01:08:35,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2018-12-09 01:08:35,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:08:35,070 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-09 01:08:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2018-12-09 01:08:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-12-09 01:08:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-09 01:08:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-12-09 01:08:35,071 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-12-09 01:08:35,071 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-12-09 01:08:35,071 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 01:08:35,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2018-12-09 01:08:35,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:35,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:08:35,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:08:35,072 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-09 01:08:35,072 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 01:08:35,072 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 208#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 204#L12-2 assume !!!(0 == main_~x~0); 205#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 213#L13-2 main_~c~0 := 1 + main_~c~0; 210#L12-2 [2018-12-09 01:08:35,072 INFO L796 eck$LassoCheckResult]: Loop: 210#L12-2 assume !!!(0 == main_~x~0); 212#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 209#L13-2 main_~c~0 := 1 + main_~c~0; 210#L12-2 [2018-12-09 01:08:35,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 2 times [2018-12-09 01:08:35,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:35,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:35,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:35,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:35,077 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 2 times [2018-12-09 01:08:35,077 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:35,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:35,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:08:35,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:35,080 INFO L82 PathProgramCache]: Analyzing trace with hash -422032510, now seen corresponding path program 1 times [2018-12-09 01:08:35,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:35,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:35,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:08:35,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,098 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:35,098 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:35,098 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:35,098 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:35,098 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:08:35,098 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,099 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:35,099 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:35,099 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 01:08:35,099 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:35,099 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:35,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,145 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:35,145 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,148 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,148 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,175 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:35,175 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,194 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,194 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,209 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,209 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,223 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,223 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,226 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,242 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:35,242 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,254 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,254 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [9, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,269 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,269 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,283 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,283 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-12-09 01:08:35,307 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:35,307 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:35,308 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:35,308 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:35,308 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:08:35,308 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,308 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:35,308 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:35,308 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-12-09 01:08:35,308 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:35,308 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:35,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,366 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:35,366 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,368 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,368 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,369 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,370 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,384 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,386 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,386 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,401 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,402 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,403 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,403 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,418 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,418 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,433 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,433 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,436 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,436 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,452 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:35,452 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,470 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,470 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,486 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,486 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,506 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:35,506 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,533 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 01:08:35,534 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:35,534 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:35,534 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:35,534 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:35,534 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 01:08:35,534 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,534 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:35,535 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:35,535 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-12-09 01:08:35,535 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:35,535 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:35,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,593 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:35,593 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 01:08:35,594 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:35,594 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:35,594 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:35,594 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:35,594 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:35,594 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:35,594 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:08:35,595 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:35,595 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:35,595 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:35,596 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:35,596 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:35,596 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:35,596 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:35,596 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:35,596 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:08:35,596 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:35,597 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:35,597 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:35,597 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:35,597 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 01:08:35,597 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:35,597 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:35,598 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:35,598 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 01:08:35,598 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 01:08:35,598 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:35,599 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:35,599 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:35,599 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:35,599 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:35,599 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:35,600 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:08:35,600 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:08:35,607 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:35,607 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:35,607 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:35,608 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:35,608 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 01:08:35,608 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:35,609 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 01:08:35,609 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 01:08:35,610 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 01:08:35,611 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 01:08:35,611 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 01:08:35,611 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 01:08:35,611 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-09 01:08:35,611 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 01:08:35,613 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-12-09 01:08:35,613 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-12-09 01:08:35,639 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 01:08:35,655 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-09 01:08:35,655 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-12-09 01:08:35,656 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 01:08:35,658 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-12-09 01:08:35,658 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 01:08:35,659 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2018-12-09 01:08:35,661 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 01:08:35,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:35,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:35,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:08:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:08:35,739 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2018-12-09 01:08:35,739 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2018-12-09 01:08:35,769 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 28 states and 35 transitions. Complement of second has 10 states. [2018-12-09 01:08:35,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 3 stem states 2 non-accepting loop states 2 accepting loop states [2018-12-09 01:08:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-09 01:08:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2018-12-09 01:08:35,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-09 01:08:35,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:35,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-12-09 01:08:35,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:35,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2018-12-09 01:08:35,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 01:08:35,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-09 01:08:35,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:35,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 24 transitions. [2018-12-09 01:08:35,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-09 01:08:35,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-09 01:08:35,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2018-12-09 01:08:35,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:08:35,772 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-12-09 01:08:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2018-12-09 01:08:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 11. [2018-12-09 01:08:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-09 01:08:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-12-09 01:08:35,773 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-12-09 01:08:35,773 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-12-09 01:08:35,773 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 01:08:35,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-12-09 01:08:35,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:35,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:08:35,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:08:35,774 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-12-09 01:08:35,774 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 01:08:35,774 INFO L794 eck$LassoCheckResult]: Stem: 315#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 316#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 311#L12-2 assume !!!(0 == main_~x~0); 312#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 319#L13-2 main_~c~0 := 1 + main_~c~0; 313#L12-2 assume !!!(0 == main_~x~0); 314#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 321#L13-2 main_~c~0 := 1 + main_~c~0; 318#L12-2 [2018-12-09 01:08:35,774 INFO L796 eck$LassoCheckResult]: Loop: 318#L12-2 assume !!!(0 == main_~x~0); 320#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 317#L13-2 main_~c~0 := 1 + main_~c~0; 318#L12-2 [2018-12-09 01:08:35,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:35,774 INFO L82 PathProgramCache]: Analyzing trace with hash -420185530, now seen corresponding path program 2 times [2018-12-09 01:08:35,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:35,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:35,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:08:35,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:08:35,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:08:35,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:08:35,798 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 01:08:35,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:35,798 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 3 times [2018-12-09 01:08:35,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:35,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:35,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:08:35,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:35,815 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:35,815 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:35,815 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:35,815 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:35,815 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:08:35,815 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,815 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:35,815 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:35,815 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 01:08:35,815 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:35,815 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:35,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:35,859 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:35,859 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,860 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,860 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,885 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:35,885 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,898 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,898 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Honda state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 15] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,913 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,913 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,927 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,927 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,930 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,930 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,945 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,945 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,950 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:35,950 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:35,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:35,966 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:35,984 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:35,984 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] [2018-12-09 01:08:35,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:08:35,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:08:35,999 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-09 01:08:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:08:36,008 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2018-12-09 01:08:36,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:08:36,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2018-12-09 01:08:36,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:36,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 14 transitions. [2018-12-09 01:08:36,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-09 01:08:36,009 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-09 01:08:36,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2018-12-09 01:08:36,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 01:08:36,009 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-12-09 01:08:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2018-12-09 01:08:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-12-09 01:08:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-09 01:08:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-12-09 01:08:36,010 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-12-09 01:08:36,010 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-12-09 01:08:36,010 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-09 01:08:36,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2018-12-09 01:08:36,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 01:08:36,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 01:08:36,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 01:08:36,010 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2018-12-09 01:08:36,010 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 01:08:36,010 INFO L794 eck$LassoCheckResult]: Stem: 348#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 349#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 344#L12-2 assume !!!(0 == main_~x~0); 345#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 352#L13-2 main_~c~0 := 1 + main_~c~0; 346#L12-2 assume !!!(0 == main_~x~0); 347#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 354#L13-2 main_~c~0 := 1 + main_~c~0; 351#L12-2 [2018-12-09 01:08:36,010 INFO L796 eck$LassoCheckResult]: Loop: 351#L12-2 assume !!!(0 == main_~x~0); 353#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 350#L13-2 main_~c~0 := 1 + main_~c~0; 351#L12-2 [2018-12-09 01:08:36,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash -422032572, now seen corresponding path program 3 times [2018-12-09 01:08:36,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:36,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:36,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:36,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:08:36,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:08:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:08:36,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:08:36,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:08:36,017 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 01:08:36,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:08:36,017 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 4 times [2018-12-09 01:08:36,017 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:08:36,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:08:36,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:36,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:08:36,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:08:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:08:36,034 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 01:08:36,034 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 01:08:36,034 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 01:08:36,035 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 01:08:36,035 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 01:08:36,035 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:36,035 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 01:08:36,035 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 01:08:36,035 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-09 01:08:36,035 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 01:08:36,035 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 01:08:36,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:36,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:36,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:36,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 01:08:36,077 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 01:08:36,077 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:36,079 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:36,079 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:36,093 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:36,093 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:36,096 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:36,097 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:36,113 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:36,113 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:36,125 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:36,125 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 14, 4] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:36,141 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:36,141 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:36,155 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:36,155 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:36,158 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 01:08:36,158 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3dae2c4-437b-4786-9bca-1215cf6fe55e/bin-2019/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 01:08:36,174 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 01:08:36,174 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 01:08:36,192 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 01:08:36,192 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] [2018-12-09 01:08:36,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:08:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:08:36,206 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-09 01:08:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:08:36,209 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2018-12-09 01:08:36,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:08:36,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 6 transitions. [2018-12-09 01:08:36,210 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 01:08:36,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2018-12-09 01:08:36,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 01:08:36,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 01:08:36,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 01:08:36,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 01:08:36,210 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:08:36,210 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:08:36,211 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:08:36,211 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-09 01:08:36,211 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:08:36,211 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 01:08:36,211 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 01:08:36,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 01:08:36 BoogieIcfgContainer [2018-12-09 01:08:36,215 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 01:08:36,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:08:36,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:08:36,216 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:08:36,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:08:33" (3/4) ... [2018-12-09 01:08:36,219 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 01:08:36,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:08:36,219 INFO L168 Benchmark]: Toolchain (without parser) took 3049.77 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 962.4 MB in the beginning and 963.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 223.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:36,220 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:08:36,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.23 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:36,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.79 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:08:36,221 INFO L168 Benchmark]: Boogie Preprocessor took 13.23 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:36,221 INFO L168 Benchmark]: RCFGBuilder took 145.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:36,222 INFO L168 Benchmark]: BuchiAutomizer took 2745.13 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 963.6 MB in the end (delta: 160.9 MB). Peak memory consumption was 241.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:08:36,222 INFO L168 Benchmark]: Witness Printer took 3.02 ms. Allocated memory is still 1.3 GB. Free memory is still 963.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:08:36,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.23 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.79 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.23 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 145.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2745.13 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 963.6 MB in the end (delta: 160.9 MB). Peak memory consumption was 241.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.02 ms. Allocated memory is still 1.3 GB. Free memory is still 963.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * y + x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 7 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 3. Nontrivial modules had stage [2, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 23 SDslu, 12 SDs, 0 SdLazy, 43 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax154 hnf97 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf95 smp100 dnf157 smp100 tf103 neg94 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 49ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 11 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...