./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:57:16,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:16,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:16,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:16,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:16,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:16,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:16,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:16,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:16,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:16,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:16,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:16,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:16,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:16,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:16,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:16,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:16,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:16,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:16,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:16,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:16,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:16,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:16,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:16,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:16,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:16,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:16,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:16,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:16,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:16,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:16,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:16,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:16,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:16,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:16,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:16,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:16,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:16,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:16,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:16,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:16,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:16,270 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:16,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:16,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:16,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:16,272 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:16,272 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:16,272 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:16,272 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:16,272 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:16,273 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:16,273 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:16,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:16,273 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:16,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:16,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:16,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:16,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:16,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:16,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:16,275 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:16,275 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:16,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:16,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:16,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:16,276 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:16,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:16,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:16,277 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:16,278 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:16,278 INFO L138 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2019-11-28 02:57:16,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:16,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:16,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:16,577 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:16,578 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:16,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2019-11-28 02:57:16,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae6f62c6/d258c2725cda42ddbaa18c38c9be9534/FLAG439ad8ede [2019-11-28 02:57:17,100 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:17,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2019-11-28 02:57:17,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae6f62c6/d258c2725cda42ddbaa18c38c9be9534/FLAG439ad8ede [2019-11-28 02:57:17,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae6f62c6/d258c2725cda42ddbaa18c38c9be9534 [2019-11-28 02:57:17,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:17,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:17,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:17,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:17,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:17,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198c21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17, skipping insertion in model container [2019-11-28 02:57:17,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:17,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:17,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:17,706 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:17,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:17,739 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:17,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17 WrapperNode [2019-11-28 02:57:17,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:17,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:17,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:17,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:17,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:17,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:17,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:17,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:17,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... [2019-11-28 02:57:17,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:17,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:17,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:17,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:17,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:18,040 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:18,040 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:57:18,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:18 BoogieIcfgContainer [2019-11-28 02:57:18,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:18,042 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:18,042 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:18,045 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:18,046 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:18,046 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:17" (1/3) ... [2019-11-28 02:57:18,047 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27f793e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:18, skipping insertion in model container [2019-11-28 02:57:18,047 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:18,047 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:17" (2/3) ... [2019-11-28 02:57:18,048 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27f793e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:18, skipping insertion in model container [2019-11-28 02:57:18,048 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:18,048 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:18" (3/3) ... [2019-11-28 02:57:18,050 INFO L371 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2019-11-28 02:57:18,165 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:18,165 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:18,165 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:18,165 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:18,166 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:18,166 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:18,166 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:18,166 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:18,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:18,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:18,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:18,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:18,216 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:18,216 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:18,217 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:18,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:18,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:18,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:18,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:18,218 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:18,218 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:18,224 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2019-11-28 02:57:18,224 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 10#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2019-11-28 02:57:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,230 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-28 02:57:18,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250027190] [2019-11-28 02:57:18,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,320 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-28 02:57:18,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619169374] [2019-11-28 02:57:18,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,336 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,338 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-28 02:57:18,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344271849] [2019-11-28 02:57:18,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,353 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,465 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:18,466 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:18,466 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:18,466 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:18,466 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:18,466 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,467 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:18,467 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:18,467 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2019-11-28 02:57:18,467 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:18,468 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:18,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,623 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:18,623 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:18,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:18,635 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,643 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:18,643 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:18,654 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:18,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:18,675 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,795 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:18,797 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:18,797 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:18,797 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:18,797 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:18,797 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:18,797 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,798 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:18,798 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:18,798 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2019-11-28 02:57:18,798 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:18,798 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:18,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,927 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:18,936 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:18,944 INFO L120 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 [2019-11-28 02:57:18,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:18,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:18,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:18,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,960 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:18,961 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:18,971 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:18,995 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-28 02:57:18,995 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,007 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,012 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 02:57:19,013 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:19,013 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2019-11-28 02:57:19,027 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-28 02:57:19,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,110 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:19,129 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 02:57:19,131 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-28 02:57:19,216 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-11-28 02:57:19,218 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 [2019-11-28 02:57:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-28 02:57:19,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 02:57:19,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:19,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 02:57:19,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-28 02:57:19,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:19,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-28 02:57:19,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 02:57:19,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:57:19,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-28 02:57:19,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:19,242 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:57:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-28 02:57:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 02:57:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 02:57:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-28 02:57:19,271 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:57:19,271 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:57:19,272 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:19,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-28 02:57:19,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:19,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:19,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:19,274 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 02:57:19,274 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:19,275 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 88#L20-2 assume !!(main_~y1~0 != main_~y2~0); 87#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 83#L20-2 [2019-11-28 02:57:19,275 INFO L796 eck$LassoCheckResult]: Loop: 83#L20-2 assume !!(main_~y1~0 != main_~y2~0); 84#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 83#L20-2 [2019-11-28 02:57:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,275 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-28 02:57:19,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:19,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474423981] [2019-11-28 02:57:19,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,296 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-28 02:57:19,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:19,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135374629] [2019-11-28 02:57:19,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,311 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:19,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,312 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-11-28 02:57:19,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:19,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400781444] [2019-11-28 02:57:19,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,334 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:19,403 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:19,403 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:19,404 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:19,404 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:19,404 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:19,404 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,404 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:19,405 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:19,405 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2019-11-28 02:57:19,405 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:19,405 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:19,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,524 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:19,524 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:19,531 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:19,536 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:19,552 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,556 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:19,556 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:19,574 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:19,600 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,761 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:19,764 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:19,764 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:19,764 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:19,764 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:19,765 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:19,765 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:19,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:19,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2019-11-28 02:57:19,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:19,766 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:19,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,861 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:19,861 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,874 INFO L120 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 [2019-11-28 02:57:19,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:19,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:19,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:19,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:19,881 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:19,883 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,888 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,901 INFO L120 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 [2019-11-28 02:57:19,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:19,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:19,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:19,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:19,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:19,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:19,907 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:19,926 INFO L120 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 [2019-11-28 02:57:19,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:19,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:19,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:19,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:19,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:19,938 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:19,948 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:19,962 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:19,963 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:19,975 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:19,979 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 02:57:19,979 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:19,979 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2019-11-28 02:57:19,987 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-28 02:57:20,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:20,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:20,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:20,055 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:20,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:20,057 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 02:57:20,057 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-28 02:57:20,099 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2019-11-28 02:57:20,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 02:57:20,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:20,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:20,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:57:20,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:20,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 02:57:20,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:20,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-11-28 02:57:20,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:20,104 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-11-28 02:57:20,104 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 02:57:20,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 02:57:20,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-28 02:57:20,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:20,104 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-28 02:57:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-28 02:57:20,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 02:57:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:57:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-28 02:57:20,107 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-28 02:57:20,107 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-28 02:57:20,107 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:20,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2019-11-28 02:57:20,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:20,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:20,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:20,108 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-11-28 02:57:20,108 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:20,109 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 153#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 159#L20-2 assume !!(main_~y1~0 != main_~y2~0); 160#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 154#L20-2 [2019-11-28 02:57:20,109 INFO L796 eck$LassoCheckResult]: Loop: 154#L20-2 assume !!(main_~y1~0 != main_~y2~0); 155#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 154#L20-2 [2019-11-28 02:57:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2019-11-28 02:57:20,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:20,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170957842] [2019-11-28 02:57:20,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,123 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:20,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-11-28 02:57:20,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:20,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111720103] [2019-11-28 02:57:20,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,131 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2019-11-28 02:57:20,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:20,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621445193] [2019-11-28 02:57:20,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,147 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:20,239 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:20,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:20,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:20,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:20,240 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:20,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:20,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:20,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2019-11-28 02:57:20,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:20,242 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:20,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:20,333 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,339 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,343 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:20,343 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,350 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:20,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,362 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:20,366 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:20,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:20,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:20,390 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,414 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:20,435 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,585 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:20,587 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:20,588 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:20,588 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:20,588 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:20,588 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:20,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:20,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:20,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2019-11-28 02:57:20,589 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:20,589 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:20,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,683 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:20,683 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:20,704 INFO L120 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 [2019-11-28 02:57:20,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,706 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:20,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,707 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:20,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:20,709 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:20,719 INFO L120 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 [2019-11-28 02:57:20,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:20,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:20,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:20,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:20,735 INFO L120 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 [2019-11-28 02:57:20,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,743 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:20,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:20,749 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,763 INFO L120 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 [2019-11-28 02:57:20,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,767 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:20,767 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,772 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:20,783 INFO L120 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 [2019-11-28 02:57:20,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,789 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:20,789 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:20,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:20,818 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-11-28 02:57:20,818 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,848 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,854 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 02:57:20,855 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:20,855 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2019-11-28 02:57:20,859 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-28 02:57:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:20,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:20,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:20,907 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:20,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:20,908 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 02:57:20,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 02:57:20,950 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2019-11-28 02:57:20,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 02:57:20,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:57:20,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:20,954 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:20,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:20,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,005 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:21,006 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 02:57:21,006 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 02:57:21,044 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2019-11-28 02:57:21,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 02:57:21,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:57:21,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,047 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,094 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:21,096 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 02:57:21,096 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 02:57:21,133 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 16 states and 24 transitions. Complement of second has 5 states. [2019-11-28 02:57:21,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-28 02:57:21,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:57:21,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-28 02:57:21,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-28 02:57:21,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2019-11-28 02:57:21,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:57:21,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2019-11-28 02:57:21,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:57:21,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 02:57:21,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-11-28 02:57:21,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:21,138 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 02:57:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-11-28 02:57:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2019-11-28 02:57:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 02:57:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-28 02:57:21,139 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-28 02:57:21,139 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-28 02:57:21,139 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:21,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-28 02:57:21,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:57:21,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:21,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:21,140 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:21,140 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:21,140 INFO L794 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 331#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 332#L20-2 [2019-11-28 02:57:21,140 INFO L796 eck$LassoCheckResult]: Loop: 332#L20-2 assume !!(main_~y1~0 != main_~y2~0); 334#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 332#L20-2 [2019-11-28 02:57:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-11-28 02:57:21,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332777863] [2019-11-28 02:57:21,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,148 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2019-11-28 02:57:21,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595025293] [2019-11-28 02:57:21,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,157 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,157 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2019-11-28 02:57:21,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355586554] [2019-11-28 02:57:21,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,165 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,187 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:21,187 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:21,187 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:21,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:21,188 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:21,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:21,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:21,188 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2019-11-28 02:57:21,188 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:21,188 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:21,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,294 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:21,295 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,304 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,313 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,321 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,321 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,329 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,329 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,335 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:21,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,474 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:21,476 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:21,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:21,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:21,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:21,476 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:21,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:21,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:21,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2019-11-28 02:57:21,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:21,477 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:21,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,560 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:21,560 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,570 INFO L120 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 [2019-11-28 02:57:21,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:21,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:21,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:21,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:21,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:21,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:21,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,576 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,582 INFO L120 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 [2019-11-28 02:57:21,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:21,584 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:21,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:21,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:21,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:21,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:21,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:21,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,597 INFO L120 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 [2019-11-28 02:57:21,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:21,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:21,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:21,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:21,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:21,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:21,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,601 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,607 INFO L120 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 [2019-11-28 02:57:21,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:21,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:21,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:21,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:21,611 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:21,612 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,615 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,622 INFO L120 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 [2019-11-28 02:57:21,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:21,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:21,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:21,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:21,627 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:21,627 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,634 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:21,639 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:21,639 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,644 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,647 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 02:57:21,648 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:21,648 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2019-11-28 02:57:21,652 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-28 02:57:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,682 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:21,683 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 02:57:21,683 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 02:57:21,707 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 12 states and 18 transitions. Complement of second has 5 states. [2019-11-28 02:57:21,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-28 02:57:21,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 02:57:21,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:21,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 02:57:21,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2019-11-28 02:57:21,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:57:21,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2019-11-28 02:57:21,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 02:57:21,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 02:57:21,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-11-28 02:57:21,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:21,711 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-28 02:57:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-11-28 02:57:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-28 02:57:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 02:57:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2019-11-28 02:57:21,712 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-28 02:57:21,712 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-28 02:57:21,712 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:57:21,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2019-11-28 02:57:21,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:57:21,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:21,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:21,715 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-28 02:57:21,715 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:21,715 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 390#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 391#L20-2 assume !!(main_~y1~0 != main_~y2~0); 392#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 397#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2019-11-28 02:57:21,715 INFO L796 eck$LassoCheckResult]: Loop: 395#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 396#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2019-11-28 02:57:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,716 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2019-11-28 02:57:21,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231800560] [2019-11-28 02:57:21,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,724 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2019-11-28 02:57:21,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109230519] [2019-11-28 02:57:21,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,729 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2019-11-28 02:57:21,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103076672] [2019-11-28 02:57:21,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,785 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:21,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:21,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:21,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:21,785 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:21,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:21,786 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:21,786 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2019-11-28 02:57:21,786 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:21,786 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:21,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:21,899 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,910 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,910 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,919 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,919 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,934 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,946 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,949 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:21,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:21,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,958 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,963 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:21,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:22,178 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:22,180 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:22,180 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:22,180 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:22,180 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:22,181 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:22,181 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,181 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:22,181 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:22,181 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2019-11-28 02:57:22,181 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:22,181 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:22,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,312 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:22,313 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,323 INFO L120 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 [2019-11-28 02:57:22,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:22,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:22,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:22,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:22,327 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:22,327 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:22,329 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,335 INFO L120 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 [2019-11-28 02:57:22,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:22,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:22,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:22,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:22,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:22,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:22,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:22,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,343 INFO L120 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 [2019-11-28 02:57:22,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:22,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:22,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:22,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:22,346 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:22,347 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:22,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:22,362 INFO L120 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 [2019-11-28 02:57:22,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:22,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:22,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:22,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:22,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:22,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:22,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,366 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:22,372 INFO L120 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 [2019-11-28 02:57:22,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:22,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:22,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:22,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:22,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:22,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:22,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,376 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:22,386 INFO L120 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 [2019-11-28 02:57:22,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:22,387 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-28 02:57:22,387 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 02:57:22,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:22,395 INFO L401 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2019-11-28 02:57:22,395 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,422 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:22,445 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-11-28 02:57:22,445 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:22,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,461 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 4. [2019-11-28 02:57:22,462 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:22,462 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 2*ULTIMATE.start_main_~y2~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0, 1*ULTIMATE.start_main_~y2~0 >= 0] [2019-11-28 02:57:22,470 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2019-11-28 02:57:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,522 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:22,536 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-28 02:57:22,537 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:57:22,563 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2019-11-28 02:57:22,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-11-28 02:57:22,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 02:57:22,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-28 02:57:22,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 02:57:22,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-11-28 02:57:22,568 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:22,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2019-11-28 02:57:22,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:22,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:22,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:22,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:22,568 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:22,569 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:22,569 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:22,569 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 02:57:22,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:57:22,569 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:22,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:57:22,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:22 BoogieIcfgContainer [2019-11-28 02:57:22,575 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:57:22,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:57:22,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:57:22,575 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:57:22,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:18" (3/4) ... [2019-11-28 02:57:22,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:57:22,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:57:22,582 INFO L168 Benchmark]: Toolchain (without parser) took 5082.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.1 MB). Free memory was 956.3 MB in the beginning and 919.4 MB in the end (delta: 36.9 MB). Peak memory consumption was 245.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,582 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:22,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.52 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,584 INFO L168 Benchmark]: Boogie Preprocessor took 18.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,585 INFO L168 Benchmark]: RCFGBuilder took 198.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,586 INFO L168 Benchmark]: BuchiAutomizer took 4532.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 919.4 MB in the end (delta: 195.3 MB). Peak memory consumption was 267.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,586 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 1.2 GB. Free memory is still 919.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:22,590 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 240.52 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 82.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4532.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 919.4 MB in the end (delta: 195.3 MB). Peak memory consumption was 267.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.29 ms. Allocated memory is still 1.2 GB. Free memory is still 919.4 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 (0 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function y1 + -1 * y2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + y2 and consists of 3 locations. One deterministic module has affine ranking function 2 * y2 + 1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.1s. 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, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 31 SDslu, 3 SDs, 0 SdLazy, 64 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax154 hnf93 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq149 hnf96 smp85 dnf112 smp97 tf100 neg95 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 83ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...