./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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-aa41828 [2018-11-23 07:54:41,509 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:54:41,510 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:54:41,518 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:54:41,518 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:54:41,519 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:54:41,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:54:41,521 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:54:41,522 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:54:41,523 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:54:41,523 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:54:41,524 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:54:41,524 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:54:41,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:54:41,526 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:54:41,526 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:54:41,527 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:54:41,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:54:41,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:54:41,530 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:54:41,531 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:54:41,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:54:41,533 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:54:41,533 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:54:41,534 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:54:41,534 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:54:41,535 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:54:41,535 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:54:41,536 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:54:41,537 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:54:41,537 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:54:41,537 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:54:41,538 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:54:41,538 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:54:41,538 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:54:41,539 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:54:41,539 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 07:54:41,550 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:54:41,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:54:41,551 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 07:54:41,551 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 07:54:41,551 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 07:54:41,552 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 07:54:41,552 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 07:54:41,552 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 07:54:41,552 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 07:54:41,552 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 07:54:41,552 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 07:54:41,552 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:54:41,553 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 07:54:41,553 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 07:54:41,553 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:54:41,553 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 07:54:41,553 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 07:54:41,553 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 07:54:41,553 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:54:41,554 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 07:54:41,554 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:54:41,554 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 07:54:41,554 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:54:41,554 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:54:41,554 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 07:54:41,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:54:41,555 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 07:54:41,555 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 07:54:41,556 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 07:54:41,556 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:41,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:54:41,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:54:41,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:54:41,591 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:54:41,591 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:54:41,591 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-11-23 07:54:41,634 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/data/5778369b8/9242f82a321940809ff60e126bcdad99/FLAG90a3e5267 [2018-11-23 07:54:42,028 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:54:42,028 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-11-23 07:54:42,032 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/data/5778369b8/9242f82a321940809ff60e126bcdad99/FLAG90a3e5267 [2018-11-23 07:54:42,040 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/data/5778369b8/9242f82a321940809ff60e126bcdad99 [2018-11-23 07:54:42,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:54:42,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:54:42,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:54:42,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:54:42,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:54:42,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c8d80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42, skipping insertion in model container [2018-11-23 07:54:42,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:54:42,070 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:54:42,167 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:54:42,169 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:54:42,178 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:54:42,185 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:54:42,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42 WrapperNode [2018-11-23 07:54:42,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:54:42,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:54:42,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:54:42,186 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:54:42,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:54:42,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:54:42,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:54:42,212 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:54:42,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... [2018-11-23 07:54:42,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:54:42,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:54:42,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:54:42,224 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:54:42,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:54:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:54:42,387 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:54:42,387 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-23 07:54:42,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:54:42 BoogieIcfgContainer [2018-11-23 07:54:42,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:54:42,387 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 07:54:42,388 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 07:54:42,390 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 07:54:42,390 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 07:54:42,391 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 07:54:42" (1/3) ... [2018-11-23 07:54:42,391 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4371454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 07:54:42, skipping insertion in model container [2018-11-23 07:54:42,392 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 07:54:42,392 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:54:42" (2/3) ... [2018-11-23 07:54:42,392 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4371454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 07:54:42, skipping insertion in model container [2018-11-23 07:54:42,392 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 07:54:42,392 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:54:42" (3/3) ... [2018-11-23 07:54:42,393 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-11-23 07:54:42,440 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 07:54:42,440 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 07:54:42,441 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 07:54:42,441 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 07:54:42,441 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:54:42,441 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:54:42,441 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 07:54:42,441 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:54:42,441 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 07:54:42,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-23 07:54:42,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:42,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:54:42,470 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:54:42,475 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 07:54:42,476 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:54:42,476 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 07:54:42,476 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-23 07:54:42,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:42,477 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:54:42,477 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:54:42,477 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 07:54:42,477 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:54:42,484 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11true assume main_~x~0 > 0 && main_~y~0 > 0; 3#L12-2true [2018-11-23 07:54:42,484 INFO L796 eck$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 [2018-11-23 07:54:42,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:42,488 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-23 07:54:42,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:42,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:42,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:42,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:42,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:42,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash 42800, now seen corresponding path program 1 times [2018-11-23 07:54:42,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:42,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:42,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:42,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:42,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:42,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:42,570 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 1 times [2018-11-23 07:54:42,571 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:42,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:42,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:42,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:42,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:42,631 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:42,632 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:42,632 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:42,632 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:42,632 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:54:42,632 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,632 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:42,632 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:42,633 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 07:54:42,633 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:42,633 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:42,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:42,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:42,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:42,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:42,766 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:42,767 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,770 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:42,770 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:42,789 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:42,789 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,792 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:42,792 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:42,807 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:42,808 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,811 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:42,811 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,828 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:42,828 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:42,847 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:42,847 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:42,862 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:42,882 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:42,882 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,022 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 07:54:43,024 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:43,024 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:43,024 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:43,024 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:43,024 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 07:54:43,024 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,024 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:43,024 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:43,024 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 07:54:43,025 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:43,025 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:43,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,104 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:43,109 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 07:54:43,110 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:43,112 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:43,112 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:54:43,113 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:43,113 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:43,113 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:43,115 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:54:43,115 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:54:43,120 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:43,120 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:43,121 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:43,121 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:54:43,121 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:43,121 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 07:54:43,121 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:43,122 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 07:54:43,123 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:54:43,131 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 07:54:43,139 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 07:54:43,139 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 07:54:43,141 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 07:54:43,142 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 07:54:43,142 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 07:54:43,142 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 [] [2018-11-23 07:54:43,143 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 07:54:43,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:43,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:43,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:54:43,211 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 [2018-11-23 07:54:43,212 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-11-23 07:54:43,247 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. [2018-11-23 07:54:43,247 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 [2018-11-23 07:54:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 07:54:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2018-11-23 07:54:43,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-23 07:54:43,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:43,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 07:54:43,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:43,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-23 07:54:43,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:43,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2018-11-23 07:54:43,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:43,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2018-11-23 07:54:43,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-23 07:54:43,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 07:54:43,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2018-11-23 07:54:43,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 07:54:43,258 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-23 07:54:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2018-11-23 07:54:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-11-23 07:54:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-23 07:54:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-11-23 07:54:43,274 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-23 07:54:43,274 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-23 07:54:43,274 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 07:54:43,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-11-23 07:54:43,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:43,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:54:43,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:54:43,275 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 07:54:43,275 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:54:43,275 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 82#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 83#L12-2 assume !!!(0 == main_~x~0); 78#L13 [2018-11-23 07:54:43,275 INFO L796 eck$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 [2018-11-23 07:54:43,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2018-11-23 07:54:43,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:43,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:43,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:43,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:43,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:43,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:43,280 INFO L82 PathProgramCache]: Analyzing trace with hash 47722, now seen corresponding path program 1 times [2018-11-23 07:54:43,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:43,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:43,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:43,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:43,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:43,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:43,286 INFO L82 PathProgramCache]: Analyzing trace with hash 920232130, now seen corresponding path program 1 times [2018-11-23 07:54:43,287 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:43,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:43,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:43,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:43,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:43,316 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:43,317 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:43,317 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:43,317 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:43,317 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:54:43,317 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,317 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:43,317 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:43,317 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 07:54:43,317 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:43,317 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:43,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,401 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:43,401 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,407 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,407 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,423 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,423 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,428 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,428 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,443 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,443 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,448 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,448 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,467 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:43,467 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,486 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,486 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,509 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,509 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,527 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:43,527 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,598 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,598 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-2, ULTIMATE.start_main_~x~0=-2} Honda state: {ULTIMATE.start_main_~y~0=-2, ULTIMATE.start_main_~x~0=-2} 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, 0, 2] Nus: [0, 0] [2018-11-23 07:54:43,651 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:43,651 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:43,651 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:43,651 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:43,651 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:54:43,651 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,651 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:43,652 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:43,652 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-23 07:54:43,652 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:43,652 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:43,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,718 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:43,718 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,719 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,719 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,734 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,734 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,737 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,739 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,739 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,753 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,753 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,755 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,755 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,769 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,770 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,771 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,772 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,793 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,793 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,810 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:43,810 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,828 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,829 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:43,843 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,844 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,858 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:43,858 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,860 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:43,860 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,877 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:43,877 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:43,970 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 07:54:43,972 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:43,972 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:43,972 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:43,972 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:43,972 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 07:54:43,972 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:43,972 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:43,972 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:43,972 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-23 07:54:43,972 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:43,973 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:43,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:43,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,052 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:44,053 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 07:54:44,053 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:44,053 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,054 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:54:44,054 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,054 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:44,054 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,054 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:54:44,054 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:54:44,055 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:44,055 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:44,056 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,056 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:54:44,056 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,056 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:44,056 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,057 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:54:44,057 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:54:44,057 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:44,058 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:44,058 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,058 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,058 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:44,058 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,060 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 07:54:44,060 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 07:54:44,071 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:44,072 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 [2018-11-23 07:54:44,072 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,072 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:54:44,073 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,073 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:44,073 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,073 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:54:44,073 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:54:44,074 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:44,074 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:44,075 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,075 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,075 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:44,075 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,076 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 07:54:44,077 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 07:54:44,079 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:44,080 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 [2018-11-23 07:54:44,080 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,081 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,081 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:44,081 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,082 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 07:54:44,082 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 07:54:44,087 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:44,088 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:44,088 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,088 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,088 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 07:54:44,089 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,093 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-23 07:54:44,093 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-23 07:54:44,151 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 07:54:44,197 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2018-11-23 07:54:44,197 INFO L444 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 5 variables to zero. [2018-11-23 07:54:44,197 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 07:54:44,200 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-23 07:54:44,200 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 07:54:44,201 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] [2018-11-23 07:54:44,208 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 07:54:44,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:44,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:44,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:54:44,284 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 [2018-11-23 07:54:44,285 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-23 07:54:44,309 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. [2018-11-23 07:54:44,311 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 [2018-11-23 07:54:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 07:54:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-23 07:54:44,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-23 07:54:44,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:44,312 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 07:54:44,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:44,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:44,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:54:44,339 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 [2018-11-23 07:54:44,339 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-23 07:54:44,356 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. [2018-11-23 07:54:44,357 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 [2018-11-23 07:54:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 07:54:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-11-23 07:54:44,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-23 07:54:44,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:44,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-23 07:54:44,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:44,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-23 07:54:44,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:44,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2018-11-23 07:54:44,358 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:44,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2018-11-23 07:54:44,358 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-23 07:54:44,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-23 07:54:44,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2018-11-23 07:54:44,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 07:54:44,358 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-23 07:54:44,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2018-11-23 07:54:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-11-23 07:54:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-23 07:54:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-11-23 07:54:44,359 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-11-23 07:54:44,359 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-11-23 07:54:44,359 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 07:54:44,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2018-11-23 07:54:44,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:44,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:54:44,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:54:44,360 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-23 07:54:44,360 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:54:44,360 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 208#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 204#L12-2 assume !!!(0 == main_~x~0); 205#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 213#L13-2 main_~c~0 := 1 + main_~c~0; 210#L12-2 [2018-11-23 07:54:44,360 INFO L796 eck$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 [2018-11-23 07:54:44,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 2 times [2018-11-23 07:54:44,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:44,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:44,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:44,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:44,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:44,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:44,365 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 2 times [2018-11-23 07:54:44,365 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:44,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:44,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:44,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:54:44,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:44,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash -422032510, now seen corresponding path program 1 times [2018-11-23 07:54:44,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:44,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:44,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:44,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:54:44,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:44,383 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:44,383 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:44,383 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:44,384 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:44,384 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:54:44,384 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,384 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:44,384 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:44,384 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 07:54:44,384 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:44,384 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:44,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,431 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:44,431 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,439 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:44,439 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:44,454 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:44,454 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,457 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:44,457 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,474 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:44,475 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:44,487 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:44,487 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,505 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:44,505 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,532 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:44,532 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:44,559 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:44,559 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,575 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:44,575 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:44,590 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:44,590 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: [] [2018-11-23 07:54:44,605 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:44,605 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:44,605 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:44,605 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:44,605 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:54:44,605 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,606 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:44,606 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:44,606 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-23 07:54:44,606 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:44,606 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:44,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,672 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:44,672 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,674 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:44,674 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:44,676 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:44,676 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:44,691 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,707 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:44,708 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:44,735 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 07:54:44,737 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:44,737 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:44,737 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:44,737 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:44,737 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 07:54:44,737 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:44,737 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:44,738 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:44,738 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-23 07:54:44,738 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:44,738 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:44,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:44,806 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:44,806 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 07:54:44,807 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:44,807 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,807 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 07:54:44,807 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,807 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 07:54:44,808 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,808 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 07:54:44,808 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 07:54:44,808 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 07:54:44,809 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 07:54:44,809 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 07:54:44,809 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 07:54:44,809 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 07:54:44,809 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 07:54:44,812 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-23 07:54:44,812 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-23 07:54:44,835 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 07:54:44,851 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 07:54:44,851 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 5 variables to zero. [2018-11-23 07:54:44,852 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 07:54:44,853 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-23 07:54:44,854 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 07:54:44,854 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] [2018-11-23 07:54:44,856 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 07:54:44,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:44,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:44,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:54:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:54:44,952 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 [2018-11-23 07:54:44,952 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2018-11-23 07:54:44,996 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. [2018-11-23 07:54:44,996 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 [2018-11-23 07:54:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 07:54:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2018-11-23 07:54:44,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 07:54:44,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:44,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-23 07:54:44,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:44,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-23 07:54:44,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 07:54:44,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-23 07:54:44,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:44,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 24 transitions. [2018-11-23 07:54:44,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-23 07:54:45,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-23 07:54:45,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2018-11-23 07:54:45,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 07:54:45,000 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-11-23 07:54:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2018-11-23 07:54:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 11. [2018-11-23 07:54:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-23 07:54:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-23 07:54:45,001 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-23 07:54:45,001 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-23 07:54:45,001 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 07:54:45,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-23 07:54:45,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:45,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:54:45,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:54:45,002 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-23 07:54:45,003 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:54:45,003 INFO L794 eck$LassoCheckResult]: Stem: 315#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 316#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 311#L12-2 assume !!!(0 == main_~x~0); 312#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 319#L13-2 main_~c~0 := 1 + main_~c~0; 313#L12-2 assume !!!(0 == main_~x~0); 314#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 321#L13-2 main_~c~0 := 1 + main_~c~0; 318#L12-2 [2018-11-23 07:54:45,004 INFO L796 eck$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 [2018-11-23 07:54:45,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash -420185530, now seen corresponding path program 2 times [2018-11-23 07:54:45,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:45,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:45,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:54:45,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:54:45,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:54:45,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:54:45,029 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 07:54:45,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:45,029 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 3 times [2018-11-23 07:54:45,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:45,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:45,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:54:45,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:45,048 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:45,048 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:45,048 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:45,049 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:45,049 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:54:45,049 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:45,049 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:45,049 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:45,049 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 07:54:45,049 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:45,049 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:45,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,110 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:45,110 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:45,120 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,120 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:45,154 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:45,154 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,173 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,173 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:45,195 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,195 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,210 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,210 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:45,213 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,214 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,228 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,228 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,231 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,232 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,252 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:45,252 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,270 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,270 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] [2018-11-23 07:54:45,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:54:45,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:54:45,287 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-23 07:54:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:54:45,297 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2018-11-23 07:54:45,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:54:45,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2018-11-23 07:54:45,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:45,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 14 transitions. [2018-11-23 07:54:45,298 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 07:54:45,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 07:54:45,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2018-11-23 07:54:45,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 07:54:45,299 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-23 07:54:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2018-11-23 07:54:45,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-11-23 07:54:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-23 07:54:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-11-23 07:54:45,300 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-23 07:54:45,300 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-23 07:54:45,300 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 07:54:45,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2018-11-23 07:54:45,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 07:54:45,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 07:54:45,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 07:54:45,301 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2018-11-23 07:54:45,301 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 07:54:45,301 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 [2018-11-23 07:54:45,301 INFO L796 eck$LassoCheckResult]: Loop: 351#L12-2 assume !!!(0 == main_~x~0); 353#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 350#L13-2 main_~c~0 := 1 + main_~c~0; 351#L12-2 [2018-11-23 07:54:45,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:45,302 INFO L82 PathProgramCache]: Analyzing trace with hash -422032572, now seen corresponding path program 3 times [2018-11-23 07:54:45,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:45,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:45,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:54:45,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:54:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:54:45,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:54:45,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:54:45,313 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 07:54:45,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:54:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 4 times [2018-11-23 07:54:45,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:54:45,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:54:45,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:54:45,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:54:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 07:54:45,331 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 07:54:45,331 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 07:54:45,331 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 07:54:45,331 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 07:54:45,331 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 07:54:45,331 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 07:54:45,331 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 07:54:45,331 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 07:54:45,331 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 07:54:45,331 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 07:54:45,331 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 07:54:45,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 07:54:45,406 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 07:54:45,406 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,408 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,409 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,424 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,424 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,427 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,427 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,449 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:45,449 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,463 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,463 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,484 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,484 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,509 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 07:54:45,509 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,529 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,529 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_ede1c91a-ab34-4f80-8b67-3b6b31a32620/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 [2018-11-23 07:54:45,546 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 07:54:45,546 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 07:54:45,561 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 07:54:45,562 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: [] [2018-11-23 07:54:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:54:45,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:54:45,563 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-23 07:54:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:54:45,568 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2018-11-23 07:54:45,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:54:45,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 6 transitions. [2018-11-23 07:54:45,568 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 07:54:45,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2018-11-23 07:54:45,569 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 07:54:45,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 07:54:45,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 07:54:45,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 07:54:45,569 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:54:45,569 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:54:45,569 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:54:45,569 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 07:54:45,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 07:54:45,569 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 07:54:45,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 07:54:45,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 07:54:45 BoogieIcfgContainer [2018-11-23 07:54:45,574 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 07:54:45,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 07:54:45,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 07:54:45,575 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 07:54:45,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:54:42" (3/4) ... [2018-11-23 07:54:45,578 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 07:54:45,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 07:54:45,578 INFO L168 Benchmark]: Toolchain (without parser) took 3536.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 959.1 MB in the beginning and 895.5 MB in the end (delta: 63.6 MB). Peak memory consumption was 199.9 MB. Max. memory is 11.5 GB. [2018-11-23 07:54:45,580 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:54:45,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.60 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:54:45,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.46 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:54:45,580 INFO L168 Benchmark]: Boogie Preprocessor took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:54:45,581 INFO L168 Benchmark]: RCFGBuilder took 163.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -179.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:54:45,581 INFO L168 Benchmark]: BuchiAutomizer took 3186.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 898.4 MB in the end (delta: 226.3 MB). Peak memory consumption was 226.3 MB. Max. memory is 11.5 GB. [2018-11-23 07:54:45,581 INFO L168 Benchmark]: Witness Printer took 3.55 ms. Allocated memory is still 1.2 GB. Free memory was 898.4 MB in the beginning and 895.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. [2018-11-23 07:54:45,583 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.60 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 25.46 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 163.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -179.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3186.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 898.4 MB in the end (delta: 226.3 MB). Peak memory consumption was 226.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.55 ms. Allocated memory is still 1.2 GB. Free memory was 898.4 MB in the beginning and 895.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 3.1s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. 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: 112ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 10 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...