./Ultimate.py --spec ../../sv-benchmarks/c/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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 0.1.23-1dbac8b [2018-10-27 06:06:03,082 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:06:03,083 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:06:03,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:06:03,094 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:06:03,095 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:06:03,097 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:06:03,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:06:03,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:06:03,101 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:06:03,102 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:06:03,103 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:06:03,104 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:06:03,105 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:06:03,106 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:06:03,107 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:06:03,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:06:03,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:06:03,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:06:03,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:06:03,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:06:03,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:06:03,118 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:06:03,119 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:06:03,119 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:06:03,120 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:06:03,125 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:06:03,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:06:03,126 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:06:03,127 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:06:03,127 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:06:03,128 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:06:03,129 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:06:03,129 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:06:03,130 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:06:03,130 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:06:03,131 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:06:03,148 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:06:03,152 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:06:03,153 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:06:03,154 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:06:03,154 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:06:03,155 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:06:03,155 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:06:03,156 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:06:03,156 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:06:03,156 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:06:03,156 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:06:03,157 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:06:03,157 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:06:03,157 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:06:03,158 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:06:03,158 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:06:03,158 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:06:03,158 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:06:03,158 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:06:03,158 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:06:03,159 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:06:03,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:06:03,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:06:03,159 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:06:03,159 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:06:03,160 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:06:03,160 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:06:03,164 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:06:03,166 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:03,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:06:03,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:06:03,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:06:03,231 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:06:03,232 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:06:03,233 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-10-27 06:06:03,296 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/data/77ee73aac/76c36a88f20b4249b3649379aa7479b8/FLAGd533692f6 [2018-10-27 06:06:03,670 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:06:03,671 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-10-27 06:06:03,675 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/data/77ee73aac/76c36a88f20b4249b3649379aa7479b8/FLAGd533692f6 [2018-10-27 06:06:03,690 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/data/77ee73aac/76c36a88f20b4249b3649379aa7479b8 [2018-10-27 06:06:03,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:06:03,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:06:03,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:03,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:06:03,703 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:06:03,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccde937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03, skipping insertion in model container [2018-10-27 06:06:03,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:06:03,732 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:06:03,873 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:03,877 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:06:03,891 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:03,901 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:06:03,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03 WrapperNode [2018-10-27 06:06:03,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:03,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:03,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:06:03,903 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:06:03,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:03,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:06:03,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:06:03,936 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:06:03,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:06:03,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:06:03,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:06:03,958 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:06:03,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:06:04,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:06:04,359 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:06:04,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:04 BoogieIcfgContainer [2018-10-27 06:06:04,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:06:04,360 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:06:04,360 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:06:04,364 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:06:04,365 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:04,365 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:06:03" (1/3) ... [2018-10-27 06:06:04,366 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c5f8f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:04, skipping insertion in model container [2018-10-27 06:06:04,366 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:04,367 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (2/3) ... [2018-10-27 06:06:04,367 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c5f8f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:04, skipping insertion in model container [2018-10-27 06:06:04,367 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:04,367 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:04" (3/3) ... [2018-10-27 06:06:04,369 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-10-27 06:06:04,431 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:06:04,432 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:06:04,432 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:06:04,432 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:06:04,432 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:06:04,432 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:06:04,432 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:06:04,433 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:06:04,433 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:06:04,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:06:04,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:04,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:04,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:04,478 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:06:04,478 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:04,479 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:06:04,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:06:04,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:04,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:04,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:04,480 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:06:04,481 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:04,489 INFO L793 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11true assume main_~x~0 > 0 && main_~y~0 > 0; 13#L12-3true [2018-10-27 06:06:04,490 INFO L795 eck$LassoCheckResult]: Loop: 13#L12-3true assume true; 8#L12-1true assume !!!(main_~x~0 == 0); 11#L13true assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 9#L13-2true main_~c~0 := main_~c~0 + 1; 13#L12-3true [2018-10-27 06:06:04,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:04,497 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2018-10-27 06:06:04,499 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:04,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:04,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:04,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:04,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1206635, now seen corresponding path program 1 times [2018-10-27 06:06:04,606 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:04,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:04,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:04,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:04,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1804969356, now seen corresponding path program 1 times [2018-10-27 06:06:04,621 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:04,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:04,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:04,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,775 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:06:04,909 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:06:04,934 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:04,935 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:04,936 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:04,936 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:04,936 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:04,936 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:04,936 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:04,936 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:04,936 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:06:04,937 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:04,937 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:04,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:04,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:04,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,330 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:06:05,336 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:05,337 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,350 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:05,351 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:05,409 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:05,409 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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) [2018-10-27 06:06:05,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:05,418 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,449 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:05,449 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,454 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:05,454 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,478 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:05,479 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:05,511 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:05,511 INFO L446 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=-3}, {ULTIMATE.start_main_~c~0=4}] Lambdas: [12, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,533 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:05,533 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,561 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:05,561 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:05,831 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:05,833 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:05,833 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:05,833 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:05,833 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:05,833 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:05,833 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,834 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:05,834 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:05,834 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:06:05,834 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:05,834 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:05,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,231 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:06,236 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:06,238 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:06,240 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:06,240 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:06,240 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:06,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:06,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:06,243 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:06,243 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:06,250 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:06,250 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:06,251 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:06,251 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:06,251 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:06,251 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:06,252 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:06,253 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:06:06,253 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:06,273 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:06,292 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:06:06,292 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:06,296 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:06,296 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:06,296 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:06,297 INFO L519 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 [] [2018-10-27 06:06:06,298 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:06,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:06,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:06,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:06,418 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:06:06,419 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-10-27 06:06:06,469 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 31 states and 36 transitions. Complement of second has 5 states. [2018-10-27 06:06:06,469 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 [2018-10-27 06:06:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2018-10-27 06:06:06,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 4 letters. [2018-10-27 06:06:06,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:06,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:06,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:06,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 8 letters. [2018-10-27 06:06:06,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:06,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2018-10-27 06:06:06,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:06,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 15 states and 18 transitions. [2018-10-27 06:06:06,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-10-27 06:06:06,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-10-27 06:06:06,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2018-10-27 06:06:06,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:06,485 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:06:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2018-10-27 06:06:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2018-10-27 06:06:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-27 06:06:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-10-27 06:06:06,509 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-10-27 06:06:06,509 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-10-27 06:06:06,509 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:06:06,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-10-27 06:06:06,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:06,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:06,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:06,510 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:06:06,510 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:06,511 INFO L793 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 87#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 88#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 94#L12-3 assume true; 95#L12-1 [2018-10-27 06:06:06,511 INFO L795 eck$LassoCheckResult]: Loop: 95#L12-1 assume !!!(main_~x~0 == 0); 96#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 90#L13-2 main_~c~0 := main_~c~0 + 1; 91#L12-3 assume true; 95#L12-1 [2018-10-27 06:06:06,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,511 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2018-10-27 06:06:06,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:06,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:06,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:06,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1390297, now seen corresponding path program 1 times [2018-10-27 06:06:06,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:06,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:06,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:06,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,527 INFO L82 PathProgramCache]: Analyzing trace with hash 119477119, now seen corresponding path program 1 times [2018-10-27 06:06:06,527 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:06,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:06,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:06,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,579 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:06,580 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:06,580 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:06,580 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:06,580 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:06,580 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,580 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:06,580 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:06,581 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:06:06,581 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:06,581 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:06,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,789 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:06,789 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,795 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,795 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,816 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,816 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,823 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,823 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,845 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,845 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:06,850 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,850 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,877 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:06,877 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,921 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,922 INFO L446 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=-3}, {ULTIMATE.start_main_~c~0=4}] Lambdas: [12, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,945 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,945 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,970 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:06,970 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,034 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,034 INFO L446 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=-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, 1, 0] Nus: [0, 0] [2018-10-27 06:06:07,063 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:07,064 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:07,064 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:07,064 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:07,064 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:07,064 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,064 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:07,064 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:07,064 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-10-27 06:06:07,064 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:07,065 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:07,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,673 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:07,674 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,677 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,677 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,703 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,703 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,707 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,708 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,711 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,711 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,732 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,733 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,735 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,735 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:07,759 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,759 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,761 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,762 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:07,793 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,793 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:07,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:07,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,846 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,846 INFO L446 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=-3}, {ULTIMATE.start_main_~c~0=4}] Lambdas: [12, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:07,867 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,867 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,888 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,888 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:07,893 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,894 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:07,918 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:07,918 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,960 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:07,962 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:07,962 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:07,962 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:07,962 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:07,962 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:07,963 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,963 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:07,963 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:07,963 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-10-27 06:06:07,963 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:07,963 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:07,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,271 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:06:08,338 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:08,338 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:08,338 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:08,339 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,339 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:08,339 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,340 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,340 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,343 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:08,343 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:08,344 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,344 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:08,345 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,345 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:08,346 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,346 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,346 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,346 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:08,346 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:08,347 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,348 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:08,354 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,354 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,354 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,354 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,356 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:08,357 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:08,377 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,377 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:08,378 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,378 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:08,378 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,378 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,379 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,379 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:08,379 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:08,383 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,384 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:08,384 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,384 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,385 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,385 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,387 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:08,387 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:08,394 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,395 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:08,395 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,396 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,396 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,396 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,400 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:08,400 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:08,416 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,417 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:08,417 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,417 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,418 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:08,418 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,428 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-10-27 06:06:08,437 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-10-27 06:06:08,573 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:08,626 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-10-27 06:06:08,626 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 5 variables to zero. [2018-10-27 06:06:08,627 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:08,631 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-10-27 06:06:08,632 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:08,632 INFO L519 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] [2018-10-27 06:06:08,661 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-10-27 06:06:08,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:08,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:08,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:08,807 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-10-27 06:06:08,807 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-10-27 06:06:08,841 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 31 states and 37 transitions. Complement of second has 9 states. [2018-10-27 06:06:08,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 2 non-accepting loop states 2 accepting loop states [2018-10-27 06:06:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:06:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-10-27 06:06:08,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 4 letters. Loop has 4 letters. [2018-10-27 06:06:08,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:08,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 8 letters. Loop has 4 letters. [2018-10-27 06:06:08,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:08,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 4 letters. Loop has 8 letters. [2018-10-27 06:06:08,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:08,845 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2018-10-27 06:06:08,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:08,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 19 states and 23 transitions. [2018-10-27 06:06:08,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-10-27 06:06:08,847 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:06:08,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-10-27 06:06:08,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:08,848 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-10-27 06:06:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-10-27 06:06:08,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2018-10-27 06:06:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-27 06:06:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-10-27 06:06:08,851 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-27 06:06:08,851 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-27 06:06:08,851 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:06:08,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2018-10-27 06:06:08,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:08,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:08,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:08,853 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:08,853 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:08,853 INFO L793 eck$LassoCheckResult]: Stem: 198#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 197#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 203#L12-3 assume true; 206#L12-1 assume !!!(main_~x~0 == 0); 207#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 208#L13-2 main_~c~0 := main_~c~0 + 1; 200#L12-3 [2018-10-27 06:06:08,853 INFO L795 eck$LassoCheckResult]: Loop: 200#L12-3 assume true; 204#L12-1 assume !!!(main_~x~0 == 0); 205#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 199#L13-2 main_~c~0 := main_~c~0 + 1; 200#L12-3 [2018-10-27 06:06:08,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1804969356, now seen corresponding path program 2 times [2018-10-27 06:06:08,853 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:08,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:08,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:08,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1206697, now seen corresponding path program 2 times [2018-10-27 06:06:08,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:08,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:08,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:08,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1242279500, now seen corresponding path program 1 times [2018-10-27 06:06:08,871 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:08,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:08,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:08,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,965 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:08,965 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:08,966 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:08,966 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:08,966 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:08,966 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,966 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:08,966 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:08,966 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:06:08,966 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:08,967 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:08,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,072 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:09,073 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,077 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,101 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:09,101 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,181 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,181 INFO L446 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=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 6] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,202 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,202 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,223 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,223 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,227 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,227 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,256 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:09,256 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,284 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,284 INFO L446 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=-3}, {ULTIMATE.start_main_~c~0=4}] Lambdas: [12, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,307 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,307 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,328 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,328 INFO L446 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: [] [2018-10-27 06:06:09,348 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:09,348 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:09,348 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:09,348 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:09,348 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:09,348 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,348 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:09,348 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:09,349 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-10-27 06:06:09,349 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:09,349 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:09,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,540 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:09,540 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,546 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,546 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,549 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,549 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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) [2018-10-27 06:06:09,571 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,571 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:09,596 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:09,596 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,672 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:09,676 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:09,676 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:09,676 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:09,676 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:09,677 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:09,677 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,677 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:09,677 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:09,677 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-10-27 06:06:09,677 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:09,677 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:09,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,901 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:06:09,971 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:09,972 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:09,972 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:09,973 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,973 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:09,973 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,973 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:09,973 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,974 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:09,974 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:09,975 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:09,975 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:09,975 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,975 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:09,976 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,976 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:09,976 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,976 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:09,976 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:09,977 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:09,977 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:09,978 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,978 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,978 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:09,978 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,979 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:09,979 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:09,987 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:09,987 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:09,987 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,988 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,988 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:09,988 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,992 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-10-27 06:06:09,992 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-10-27 06:06:10,041 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:10,065 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-10-27 06:06:10,065 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-10-27 06:06:10,066 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:10,069 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-10-27 06:06:10,070 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:10,070 INFO L519 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] [2018-10-27 06:06:10,112 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-10-27 06:06:10,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:10,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:10,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:10,395 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 [2018-10-27 06:06:10,395 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand 7 states. [2018-10-27 06:06:10,521 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand 7 states. Result 36 states and 44 transitions. Complement of second has 10 states. [2018-10-27 06:06:10,523 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 [2018-10-27 06:06:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-27 06:06:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2018-10-27 06:06:10,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:10,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:10,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2018-10-27 06:06:10,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:10,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2018-10-27 06:06:10,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:10,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 44 transitions. [2018-10-27 06:06:10,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:10,527 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 24 states and 29 transitions. [2018-10-27 06:06:10,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-10-27 06:06:10,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:06:10,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2018-10-27 06:06:10,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:10,532 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-10-27 06:06:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2018-10-27 06:06:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2018-10-27 06:06:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-27 06:06:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-10-27 06:06:10,534 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:06:10,534 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:06:10,534 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:06:10,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-10-27 06:06:10,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:10,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:10,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:10,535 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2018-10-27 06:06:10,535 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:10,536 INFO L793 eck$LassoCheckResult]: Stem: 325#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 323#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 324#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 334#L12-3 assume true; 336#L12-1 assume !!!(main_~x~0 == 0); 335#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 332#L13-2 main_~c~0 := main_~c~0 + 1; 333#L12-3 assume true; 328#L12-1 assume !!!(main_~x~0 == 0); 329#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 337#L13-2 main_~c~0 := main_~c~0 + 1; 331#L12-3 [2018-10-27 06:06:10,536 INFO L795 eck$LassoCheckResult]: Loop: 331#L12-3 assume true; 326#L12-1 assume !!!(main_~x~0 == 0); 327#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 330#L13-2 main_~c~0 := main_~c~0 + 1; 331#L12-3 [2018-10-27 06:06:10,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:10,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1185021260, now seen corresponding path program 2 times [2018-10-27 06:06:10,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:10,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:10,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:10,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:10,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:06:10,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:06:10,639 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:06:10,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:10,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1206697, now seen corresponding path program 3 times [2018-10-27 06:06:10,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:10,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:10,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:10,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,667 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:10,667 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:10,667 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:10,667 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:10,667 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:10,667 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,667 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:10,667 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:10,667 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:06:10,667 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:10,668 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:10,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,789 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:10,789 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:10,792 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,792 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:10,812 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:10,813 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:10,816 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,816 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:10,862 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:10,862 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:10,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,868 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:10,891 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:10,891 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:10,974 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:10,974 INFO L446 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=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 6] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:10,995 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,996 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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) [2018-10-27 06:06:11,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:11,021 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,051 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:11,051 INFO L446 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=-3}, {ULTIMATE.start_main_~c~0=4}] Lambdas: [12, 1, 1] Nus: [0, 0] [2018-10-27 06:06:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:06:11,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:06:11,073 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-10-27 06:06:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:06:11,109 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-10-27 06:06:11,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:06:11,110 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 25 transitions. [2018-10-27 06:06:11,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:11,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 19 transitions. [2018-10-27 06:06:11,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-10-27 06:06:11,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:06:11,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 19 transitions. [2018-10-27 06:06:11,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:11,112 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-27 06:06:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 19 transitions. [2018-10-27 06:06:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2018-10-27 06:06:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-27 06:06:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-10-27 06:06:11,114 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-10-27 06:06:11,114 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-10-27 06:06:11,114 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:06:11,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2018-10-27 06:06:11,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:11,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:11,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:11,115 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1] [2018-10-27 06:06:11,115 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:11,116 INFO L793 eck$LassoCheckResult]: Stem: 368#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 366#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;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; 367#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 377#L12-3 assume true; 379#L12-1 assume !!!(main_~x~0 == 0); 380#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 375#L13-2 main_~c~0 := main_~c~0 + 1; 376#L12-3 assume true; 371#L12-1 assume !!!(main_~x~0 == 0); 372#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 378#L13-2 main_~c~0 := main_~c~0 + 1; 374#L12-3 [2018-10-27 06:06:11,116 INFO L795 eck$LassoCheckResult]: Loop: 374#L12-3 assume true; 369#L12-1 assume !!!(main_~x~0 == 0); 370#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 373#L13-2 main_~c~0 := main_~c~0 + 1; 374#L12-3 [2018-10-27 06:06:11,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:11,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1242279562, now seen corresponding path program 3 times [2018-10-27 06:06:11,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:11,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:11,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:11,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:11,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:11,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:06:11,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:06:11,188 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:06:11,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1206697, now seen corresponding path program 4 times [2018-10-27 06:06:11,189 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:11,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:11,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:11,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:11,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:11,243 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:11,244 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:11,244 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:11,244 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:11,244 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:11,244 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,244 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:11,244 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:11,244 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration5_Loop [2018-10-27 06:06:11,245 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:11,245 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:11,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,334 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:11,334 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:11,339 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:11,339 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:11,359 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:11,360 INFO L446 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_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:11,364 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:11,364 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:11,388 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:11,389 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:11,416 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:11,417 INFO L446 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=-3}, {ULTIMATE.start_main_~c~0=4}] Lambdas: [12, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:11,439 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:11,439 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:11,460 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:11,460 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:11,464 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:11,464 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_adc3050d-f809-4631-a14f-ce75f6175fc8/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 [2018-10-27 06:06:11,487 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:11,487 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:11,556 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:11,556 INFO L446 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=-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, 2, 13] Nus: [0, 0] [2018-10-27 06:06:11,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:06:11,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:06:11,574 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-10-27 06:06:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:06:11,580 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2018-10-27 06:06:11,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:06:11,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 9 transitions. [2018-10-27 06:06:11,581 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:11,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-10-27 06:06:11,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:06:11,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:06:11,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:06:11,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:11,582 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:11,582 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:11,582 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:11,582 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:06:11,582 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:06:11,582 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:11,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:06:11,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:06:11 BoogieIcfgContainer [2018-10-27 06:06:11,594 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:06:11,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:06:11,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:06:11,594 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:06:11,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:04" (3/4) ... [2018-10-27 06:06:11,598 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:06:11,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:06:11,599 INFO L168 Benchmark]: Toolchain (without parser) took 7905.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 961.2 MB in the beginning and 944.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 174.8 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:11,600 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:11,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.22 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:11,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.26 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:11,602 INFO L168 Benchmark]: Boogie Preprocessor took 21.16 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:11,602 INFO L168 Benchmark]: RCFGBuilder took 402.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:11,603 INFO L168 Benchmark]: BuchiAutomizer took 7233.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.7 MB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:11,603 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:11,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.22 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 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 33.26 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.16 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 402.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7233.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.7 MB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * y + x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 6 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 7.1s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 6.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 44 SDtfs, 28 SDslu, 26 SDs, 0 SdLazy, 34 SolverSat, 16 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: 215ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 10 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...