./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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-restricted-15/b.09-no-inv_assume.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 cf6b3a74fd4060a216a178ad3d11a901c2ac840d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:31:21,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:31:21,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:31:21,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:31:21,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:31:21,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:31:21,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:31:21,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:31:21,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:31:21,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:31:21,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:31:21,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:31:21,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:31:21,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:31:21,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:31:21,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:31:21,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:31:21,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:31:21,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:31:21,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:31:21,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:31:21,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:31:21,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:31:21,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:31:21,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:31:21,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:31:21,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:31:21,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:31:21,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:31:21,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:31:21,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:31:21,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:31:21,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:31:21,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:31:21,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:31:21,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:31:21,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:31:21,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:31:21,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:31:21,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:31:21,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:31:21,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-07-29 01:31:21,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:31:21,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:31:21,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:31:21,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:31:21,596 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:31:21,596 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 01:31:21,597 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 01:31:21,597 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 01:31:21,597 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 01:31:21,599 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 01:31:21,599 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 01:31:21,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:31:21,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:31:21,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:31:21,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:31:21,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 01:31:21,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 01:31:21,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 01:31:21,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:31:21,601 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 01:31:21,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:31:21,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 01:31:21,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:31:21,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:31:21,604 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 01:31:21,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:31:21,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:31:21,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:31:21,604 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 01:31:21,606 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 01:31:21,606 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 -> cf6b3a74fd4060a216a178ad3d11a901c2ac840d [2020-07-29 01:31:21,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:31:21,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:31:21,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:31:21,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:31:21,917 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:31:21,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2020-07-29 01:31:21,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5a3e649/3526d6c04f5a453595aad8fddaf769a7/FLAG3ddb34538 [2020-07-29 01:31:22,466 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:31:22,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2020-07-29 01:31:22,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5a3e649/3526d6c04f5a453595aad8fddaf769a7/FLAG3ddb34538 [2020-07-29 01:31:22,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5a3e649/3526d6c04f5a453595aad8fddaf769a7 [2020-07-29 01:31:22,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:31:22,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:31:22,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:31:22,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:31:22,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:31:22,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:31:22" (1/1) ... [2020-07-29 01:31:22,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6902d293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:22, skipping insertion in model container [2020-07-29 01:31:22,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:31:22" (1/1) ... [2020-07-29 01:31:22,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:31:22,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:31:23,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:31:23,066 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:31:23,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:31:23,107 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:31:23,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23 WrapperNode [2020-07-29 01:31:23,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:31:23,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:31:23,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:31:23,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:31:23,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:31:23,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:31:23,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:31:23,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:31:23,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (1/1) ... [2020-07-29 01:31:23,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:31:23,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:31:23,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:31:23,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:31:23,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (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 [2020-07-29 01:31:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:31:23,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:31:23,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:31:23,522 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 01:31:23,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:31:23 BoogieIcfgContainer [2020-07-29 01:31:23,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:31:23,527 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 01:31:23,527 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 01:31:23,531 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 01:31:23,532 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:31:23,532 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 01:31:22" (1/3) ... [2020-07-29 01:31:23,534 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1977d119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:31:23, skipping insertion in model container [2020-07-29 01:31:23,534 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:31:23,534 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:31:23" (2/3) ... [2020-07-29 01:31:23,535 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1977d119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:31:23, skipping insertion in model container [2020-07-29 01:31:23,535 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:31:23,535 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:31:23" (3/3) ... [2020-07-29 01:31:23,537 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.09-no-inv_assume.c [2020-07-29 01:31:23,634 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 01:31:23,635 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 01:31:23,635 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 01:31:23,635 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:31:23,635 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:31:23,636 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 01:31:23,636 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:31:23,636 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 01:31:23,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-07-29 01:31:23,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:23,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:23,679 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:23,687 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 01:31:23,687 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:31:23,688 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 01:31:23,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-07-29 01:31:23,693 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:23,693 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:23,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:23,695 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 01:31:23,695 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:31:23,702 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11true assume main_~x~0 > 0 && main_~y~0 > 0; 3#L12-2true [2020-07-29 01:31:23,702 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!!(0 == main_~x~0); 10#L13true assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 8#L13-2true main_~c~0 := 1 + main_~c~0; 3#L12-2true [2020-07-29 01:31:23,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:23,707 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-07-29 01:31:23,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:23,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575718344] [2020-07-29 01:31:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:23,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:23,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:23,820 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:23,822 INFO L82 PathProgramCache]: Analyzing trace with hash 42800, now seen corresponding path program 1 times [2020-07-29 01:31:23,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:23,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652624412] [2020-07-29 01:31:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:23,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:23,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:23,852 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 1 times [2020-07-29 01:31:23,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:23,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150134824] [2020-07-29 01:31:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:23,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:23,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:23,888 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:24,001 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:24,002 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:24,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:24,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:24,003 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:31:24,003 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:24,003 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:24,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:24,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration1_Loop [2020-07-29 01:31:24,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:24,005 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:24,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:24,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:24,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:24,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:24,325 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-07-29 01:31:24,503 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:24,504 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) [2020-07-29 01:31:24,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:24,511 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 [2020-07-29 01:31:24,522 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:24,523 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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) [2020-07-29 01:31:24,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:24,563 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:24,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:24,569 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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) [2020-07-29 01:31:24,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:24,609 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 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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:24,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:24,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:24,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:24,658 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:24,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:24,685 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:24,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:24,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:24,925 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 01:31:24,927 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:24,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:24,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:24,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:24,927 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 01:31:24,928 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:24,928 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:24,928 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:24,928 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration1_Loop [2020-07-29 01:31:24,928 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:24,929 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:24,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:24,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:24,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:24,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:25,129 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:25,135 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-07-29 01:31:25,151 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 [2020-07-29 01:31:25,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:25,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:25,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:25,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:25,163 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:31:25,164 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-29 01:31:25,169 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:25,217 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 [2020-07-29 01:31:25,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:25,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:25,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:25,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:25,224 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:31:25,224 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:25,230 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:25,265 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 [2020-07-29 01:31:25,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:25,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:25,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:25,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:25,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:25,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:31:25,270 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 01:31:25,272 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:25,309 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 [2020-07-29 01:31:25,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:25,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:25,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:25,311 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-07-29 01:31:25,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:25,315 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-07-29 01:31:25,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 01:31:25,321 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 01:31:25,335 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-29 01:31:25,335 INFO L444 ModelExtractionUtils]: 0 out of 4 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:25,344 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 01:31:25,344 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 01:31:25,344 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 01:31:25,345 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:25,385 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 01:31:25,391 INFO L393 LassoCheck]: Loop: "assume !!!(0 == main_~x~0);" "assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0;" "main_~c~0 := 1 + main_~c~0;" [2020-07-29 01:31:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:25,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:25,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 01:31:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:25,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:25,451 INFO L280 TraceCheckUtils]: 0: Hoare triple {19#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; {19#unseeded} is VALID [2020-07-29 01:31:25,452 INFO L280 TraceCheckUtils]: 1: Hoare triple {19#unseeded} assume main_~x~0 > 0 && main_~y~0 > 0; {19#unseeded} is VALID [2020-07-29 01:31:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:25,461 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 01:31:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:25,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:25,575 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#(>= oldRank0 (+ (* (- 1) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))} assume !!!(0 == main_~x~0); {22#(>= oldRank0 (+ (* (- 1) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))} is VALID [2020-07-29 01:31:25,577 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#(>= oldRank0 (+ (* (- 1) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))} assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; {43#(and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (<= 1 oldRank0))} is VALID [2020-07-29 01:31:25,579 INFO L280 TraceCheckUtils]: 2: Hoare triple {43#(and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (<= 1 oldRank0))} main_~c~0 := 1 + main_~c~0; {32#(or (and (>= oldRank0 0) (> oldRank0 (+ (* (- 1) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))) unseeded)} is VALID [2020-07-29 01:31:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:31:25,592 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:31:25,605 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:31:25,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,618 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-29 01:31:25,620 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2020-07-29 01:31:25,703 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 29 states and 36 transitions. Complement of second has 5 states. [2020-07-29 01:31:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-29 01:31:25,704 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:25,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-07-29 01:31:25,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:25,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:25,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:25,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-29 01:31:25,712 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-29 01:31:25,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:25,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:25,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 36 transitions. [2020-07-29 01:31:25,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:25,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:25,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:25,719 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 9 states. [2020-07-29 01:31:25,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:25,722 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:25,722 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 4 states. [2020-07-29 01:31:25,726 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-29 01:31:25,729 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 2 examples of accepted words. [2020-07-29 01:31:25,729 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 29 states and 36 transitions. cyclomatic complexity: 9 [2020-07-29 01:31:25,730 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:25,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:31:25,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:31:25,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:31:25,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 29 letters. Loop has 29 letters. [2020-07-29 01:31:25,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 29 letters. Loop has 29 letters. [2020-07-29 01:31:25,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 29 letters. Loop has 29 letters. [2020-07-29 01:31:25,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 9 letters. Loop has 9 letters. [2020-07-29 01:31:25,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 9 letters. Loop has 9 letters. [2020-07-29 01:31:25,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 9 letters. Loop has 9 letters. [2020-07-29 01:31:25,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:25,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:25,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:25,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:25,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:25,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:25,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:31:25,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:31:25,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:31:25,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:31:25,777 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:31:25,777 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:31:25,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:25,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:25,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:25,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:25,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:25,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:25,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 29 states and 36 transitions. cyclomatic complexity: 9 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:25,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,792 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:31:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2020-07-29 01:31:25,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:31:25,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:25,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-29 01:31:25,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:25,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. cyclomatic complexity: 9 [2020-07-29 01:31:25,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:25,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2020-07-29 01:31:25,831 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-29 01:31:25,831 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-29 01:31:25,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-07-29 01:31:25,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-29 01:31:25,833 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-07-29 01:31:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-07-29 01:31:25,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-07-29 01:31:25,862 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:31:25,863 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states and 15 transitions. Second operand 10 states. [2020-07-29 01:31:25,863 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states and 15 transitions. Second operand 10 states. [2020-07-29 01:31:25,866 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 10 states. [2020-07-29 01:31:25,870 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:25,875 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2020-07-29 01:31:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2020-07-29 01:31:25,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:25,878 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:25,878 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 12 states and 15 transitions. [2020-07-29 01:31:25,878 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 12 states and 15 transitions. [2020-07-29 01:31:25,879 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:25,881 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-07-29 01:31:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2020-07-29 01:31:25,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:25,884 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:25,884 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:31:25,884 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:31:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-29 01:31:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-07-29 01:31:25,890 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-07-29 01:31:25,890 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-07-29 01:31:25,890 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 01:31:25,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-07-29 01:31:25,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:25,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:25,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:25,894 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 01:31:25,894 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:31:25,895 INFO L794 eck$LassoCheckResult]: Stem: 87#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 88#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 91#L12-2 assume !!!(0 == main_~x~0); 84#L13 [2020-07-29 01:31:25,895 INFO L796 eck$LassoCheckResult]: Loop: 84#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 89#L13-2 main_~c~0 := 1 + main_~c~0; 83#L12-2 assume !!!(0 == main_~x~0); 84#L13 [2020-07-29 01:31:25,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:25,897 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-07-29 01:31:25,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:25,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584147018] [2020-07-29 01:31:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:25,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:25,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:25,936 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash 47722, now seen corresponding path program 1 times [2020-07-29 01:31:25,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:25,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055630909] [2020-07-29 01:31:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:25,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:25,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:25,967 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash 920232130, now seen corresponding path program 1 times [2020-07-29 01:31:25,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:25,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931774070] [2020-07-29 01:31:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:25,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:26,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:26,012 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:26,050 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:26,050 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:26,050 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:26,050 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:26,050 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:31:26,051 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:26,051 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:26,051 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:26,051 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Loop [2020-07-29 01:31:26,051 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:26,051 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:26,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,243 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:26,243 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-07-29 01:31:26,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:26,247 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:26,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:26,254 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:26,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:26,301 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:26,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:26,354 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 [2020-07-29 01:31:26,445 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:26,446 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 2, 8] Nus: [0, 0] 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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:26,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:26,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:26,476 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:26,476 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:26,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:26,501 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-07-29 01:31:26,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:26,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:26,559 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:26,559 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] [2020-07-29 01:31:26,630 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:26,630 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:26,630 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:26,630 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:26,630 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:31:26,631 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:26,631 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:26,631 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:26,631 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Lasso [2020-07-29 01:31:26,631 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:26,631 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:26,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:26,952 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:26,952 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:26,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:26,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:26,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:26,970 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:26,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:26,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:27,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:27,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_4=0} Honda state: {v_rep~unnamed0~0~false_4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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 [2020-07-29 01:31:27,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:27,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:27,035 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:27,035 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 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 [2020-07-29 01:31:27,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:27,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:27,063 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:27,063 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 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 [2020-07-29 01:31:27,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:27,086 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) [2020-07-29 01:31:27,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:27,114 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,129 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:27,129 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] 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 [2020-07-29 01:31:27,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:27,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:27,165 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:27,165 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_4=1} Honda state: {v_rep~unnamed0~0~true_4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:27,192 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-07-29 01:31:27,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:27,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:27,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 01:31:27,354 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:27,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:27,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:27,355 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:27,355 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 01:31:27,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,355 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:27,355 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:27,355 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Lasso [2020-07-29 01:31:27,355 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:27,355 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:27,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:27,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:27,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:27,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:27,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:27,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:27,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:27,621 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:27,621 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-07-29 01:31:27,625 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 [2020-07-29 01:31:27,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:27,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:27,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:27,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:27,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:27,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:31:27,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,632 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:27,670 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 [2020-07-29 01:31:27,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:27,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:27,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:27,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:27,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:27,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:31:27,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,676 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:27,712 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 [2020-07-29 01:31:27,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:27,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:27,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:27,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:27,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:27,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:31:27,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,717 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 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 [2020-07-29 01:31:27,744 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 [2020-07-29 01:31:27,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:27,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:27,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:27,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:27,748 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:31:27,748 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-29 01:31:27,752 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 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 [2020-07-29 01:31:27,776 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 [2020-07-29 01:31:27,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:27,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:27,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:27,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:27,781 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:31:27,781 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-29 01:31:27,786 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:27,821 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 [2020-07-29 01:31:27,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:27,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:27,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:27,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:27,829 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:31:27,830 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,834 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 [2020-07-29 01:31:27,860 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 [2020-07-29 01:31:27,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:27,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:27,862 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-07-29 01:31:27,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:27,869 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-07-29 01:31:27,870 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-07-29 01:31:27,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 01:31:27,918 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-07-29 01:31:27,919 INFO L444 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 5 variables to zero. 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) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:27,922 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 01:31:27,926 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-07-29 01:31:27,927 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 01:31:27,927 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [2*ULTIMATE.start_main_~x~0 - 1 >= 0] [2020-07-29 01:31:27,955 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-29 01:31:27,960 INFO L393 LassoCheck]: Loop: "assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1;" "main_~c~0 := 1 + main_~c~0;" "assume !!!(0 == main_~x~0);" [2020-07-29 01:31:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-29 01:31:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:28,025 INFO L280 TraceCheckUtils]: 0: Hoare triple {154#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; {154#unseeded} is VALID [2020-07-29 01:31:28,026 INFO L280 TraceCheckUtils]: 1: Hoare triple {154#unseeded} assume main_~x~0 > 0 && main_~y~0 > 0; {173#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) unseeded)} is VALID [2020-07-29 01:31:28,027 INFO L280 TraceCheckUtils]: 2: Hoare triple {173#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) unseeded)} assume !!!(0 == main_~x~0); {173#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) unseeded)} is VALID [2020-07-29 01:31:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,032 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-29 01:31:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:28,079 INFO L280 TraceCheckUtils]: 0: Hoare triple {174#(and (>= oldRank0 ULTIMATE.start_main_~x~0) (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0))} assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; {188#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} is VALID [2020-07-29 01:31:28,080 INFO L280 TraceCheckUtils]: 1: Hoare triple {188#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} main_~c~0 := 1 + main_~c~0; {188#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} is VALID [2020-07-29 01:31:28,081 INFO L280 TraceCheckUtils]: 2: Hoare triple {188#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} assume !!!(0 == main_~x~0); {176#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) (or (and (> oldRank0 ULTIMATE.start_main_~x~0) (>= oldRank0 0)) unseeded))} is VALID [2020-07-29 01:31:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:31:28,082 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:31:28,093 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:31:28,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,094 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 [2020-07-29 01:31:28,094 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-07-29 01:31:28,167 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 21 transitions. Complement of second has 5 states. [2020-07-29 01:31:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 0 non-accepting loop states 2 accepting loop states [2020-07-29 01:31:28,168 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:28,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 01:31:28,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:28,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:28,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-29 01:31:28,169 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:31:28,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 01:31:28,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2020-07-29 01:31:28,170 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:28,170 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:28,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:28,171 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 01:31:28,174 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:28,174 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 4 states. [2020-07-29 01:31:28,175 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:31:28,175 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. cyclomatic complexity: 2 [2020-07-29 01:31:28,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 01:31:28,176 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 0 examples of accepted words. [2020-07-29 01:31:28,176 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 16 states and 21 transitions. cyclomatic complexity: 7 [2020-07-29 01:31:28,177 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:28,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 16 letters. Loop has 16 letters. [2020-07-29 01:31:28,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 16 letters. Loop has 16 letters. [2020-07-29 01:31:28,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 16 letters. Loop has 16 letters. [2020-07-29 01:31:28,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:28,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:28,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:28,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:28,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:28,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:28,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:28,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:28,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:28,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:28,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:28,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:28,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:28,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:28,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 21 transitions. cyclomatic complexity: 7 Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:28,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,195 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:31:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-07-29 01:31:28,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,200 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-07-29 01:31:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-29 01:31:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:28,246 INFO L280 TraceCheckUtils]: 0: Hoare triple {154#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; {154#unseeded} is VALID [2020-07-29 01:31:28,247 INFO L280 TraceCheckUtils]: 1: Hoare triple {154#unseeded} assume main_~x~0 > 0 && main_~y~0 > 0; {173#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) unseeded)} is VALID [2020-07-29 01:31:28,248 INFO L280 TraceCheckUtils]: 2: Hoare triple {173#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) unseeded)} assume !!!(0 == main_~x~0); {173#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) unseeded)} is VALID [2020-07-29 01:31:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,254 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-29 01:31:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:28,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:28,293 INFO L280 TraceCheckUtils]: 0: Hoare triple {174#(and (>= oldRank0 ULTIMATE.start_main_~x~0) (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0))} assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; {234#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} is VALID [2020-07-29 01:31:28,294 INFO L280 TraceCheckUtils]: 1: Hoare triple {234#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} main_~c~0 := 1 + main_~c~0; {234#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} is VALID [2020-07-29 01:31:28,295 INFO L280 TraceCheckUtils]: 2: Hoare triple {234#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (<= 0 (+ (* 2 ULTIMATE.start_main_~x~0) 1)))} assume !!!(0 == main_~x~0); {176#(and (>= (+ (* 2 ULTIMATE.start_main_~x~0) (- 1)) 0) (or (and (> oldRank0 ULTIMATE.start_main_~x~0) (>= oldRank0 0)) unseeded))} is VALID [2020-07-29 01:31:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:31:28,296 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:31:28,306 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:31:28,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,307 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2020-07-29 01:31:28,307 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-07-29 01:31:28,367 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 21 states and 26 transitions. Complement of second has 6 states. [2020-07-29 01:31:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-29 01:31:28,368 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:28,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 01:31:28,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:28,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:28,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-29 01:31:28,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-29 01:31:28,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:28,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:28,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2020-07-29 01:31:28,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:28,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:28,371 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:28,371 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 01:31:28,371 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:28,372 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 4 states. [2020-07-29 01:31:28,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-29 01:31:28,374 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2020-07-29 01:31:28,375 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 21 states and 26 transitions. cyclomatic complexity: 9 [2020-07-29 01:31:28,376 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:28,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,379 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:28,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:28,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:28,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 21 letters. Loop has 21 letters. [2020-07-29 01:31:28,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 21 letters. Loop has 21 letters. [2020-07-29 01:31:28,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 21 letters. Loop has 21 letters. [2020-07-29 01:31:28,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:28,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:28,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:28,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:28,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:28,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:31:28,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:28,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:28,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:31:28,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:28,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:28,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:28,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:28,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:28,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:28,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:28,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:28,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:28,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 26 transitions. cyclomatic complexity: 9 Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:28,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,397 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:31:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-07-29 01:31:28,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:31:28,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:28,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-29 01:31:28,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:28,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. cyclomatic complexity: 9 [2020-07-29 01:31:28,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:28,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2020-07-29 01:31:28,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-29 01:31:28,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-29 01:31:28,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2020-07-29 01:31:28,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-29 01:31:28,405 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-07-29 01:31:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2020-07-29 01:31:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2020-07-29 01:31:28,408 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:31:28,408 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states and 16 transitions. Second operand 10 states. [2020-07-29 01:31:28,408 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states and 16 transitions. Second operand 10 states. [2020-07-29 01:31:28,408 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 10 states. [2020-07-29 01:31:28,417 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:28,420 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-07-29 01:31:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-07-29 01:31:28,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:28,421 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:28,421 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 13 states and 16 transitions. [2020-07-29 01:31:28,421 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 13 states and 16 transitions. [2020-07-29 01:31:28,422 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:28,425 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-07-29 01:31:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-07-29 01:31:28,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:28,426 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:28,426 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:31:28,426 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:31:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-29 01:31:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-07-29 01:31:28,427 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-07-29 01:31:28,427 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-07-29 01:31:28,428 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-29 01:31:28,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2020-07-29 01:31:28,429 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:28,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:28,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:28,429 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-29 01:31:28,430 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:31:28,430 INFO L794 eck$LassoCheckResult]: Stem: 275#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 276#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 272#L12-2 assume !!!(0 == main_~x~0); 273#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 281#L13-2 main_~c~0 := 1 + main_~c~0; 278#L12-2 [2020-07-29 01:31:28,430 INFO L796 eck$LassoCheckResult]: Loop: 278#L12-2 assume !!!(0 == main_~x~0); 280#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 277#L13-2 main_~c~0 := 1 + main_~c~0; 278#L12-2 [2020-07-29 01:31:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 2 times [2020-07-29 01:31:28,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:28,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824451629] [2020-07-29 01:31:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:28,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:28,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:28,452 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:28,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:28,452 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 2 times [2020-07-29 01:31:28,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:28,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443039280] [2020-07-29 01:31:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:28,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:28,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:28,461 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash -422032510, now seen corresponding path program 1 times [2020-07-29 01:31:28,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:28,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541461899] [2020-07-29 01:31:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:28,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:28,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:28,492 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:28,517 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:28,517 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:28,517 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:28,518 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:28,518 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:31:28,518 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:28,518 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:28,518 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:28,518 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Loop [2020-07-29 01:31:28,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:28,519 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:28,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,693 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:28,693 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-07-29 01:31:28,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:28,700 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:28,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:28,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:28,746 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:28,746 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] 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) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:28,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:28,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:28,771 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:28,771 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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 [2020-07-29 01:31:28,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:28,795 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-07-29 01:31:28,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:28,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:28,836 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:28,837 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] 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 [2020-07-29 01:31:28,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:28,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:28,867 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:28,867 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-29 01:31:28,947 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:28,947 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:28,947 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:28,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:28,948 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:31:28,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:28,948 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:28,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:28,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Lasso [2020-07-29 01:31:28,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:28,949 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:28,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:28,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,197 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:29,197 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-07-29 01:31:29,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:29,211 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 [2020-07-29 01:31:29,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:29,215 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 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 [2020-07-29 01:31:29,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:29,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:29,244 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:29,244 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 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 [2020-07-29 01:31:29,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:29,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:29,270 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:29,270 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 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 [2020-07-29 01:31:29,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:29,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:29,294 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:29,294 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 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 [2020-07-29 01:31:29,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:29,317 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-07-29 01:31:29,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:29,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:29,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:29,352 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] 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 [2020-07-29 01:31:29,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:29,375 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:29,401 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:29,441 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 01:31:29,442 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:29,442 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:29,442 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:29,443 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:29,443 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 01:31:29,443 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,443 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:29,443 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:29,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Lasso [2020-07-29 01:31:29,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:29,443 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:29,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:29,711 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:29,712 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-07-29 01:31:29,715 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 [2020-07-29 01:31:29,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:29,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:29,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:29,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:29,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:29,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:31:29,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 01:31:29,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 50 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 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,742 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 [2020-07-29 01:31:29,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:29,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:29,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:29,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:29,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:29,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:31:29,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 01:31:29,745 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 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,768 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 [2020-07-29 01:31:29,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:29,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:31:29,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:29,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:29,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:29,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:31:29,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 01:31:29,772 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 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,793 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 [2020-07-29 01:31:29,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:29,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:29,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:29,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:29,796 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:31:29,796 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-29 01:31:29,801 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 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,822 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 [2020-07-29 01:31:29,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:29,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:29,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:31:29,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:29,825 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:31:29,825 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-29 01:31:29,829 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 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,851 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 [2020-07-29 01:31:29,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:31:29,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:31:29,853 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-07-29 01:31:29,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:31:29,859 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-07-29 01:31:29,859 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-07-29 01:31:29,881 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 01:31:29,900 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-07-29 01:31:29,900 INFO L444 ModelExtractionUtils]: 5 out of 16 variables were initially zero. Simplification set additionally 8 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:29,902 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 01:31:29,905 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-07-29 01:31:29,906 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 01:31:29,906 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2020-07-29 01:31:29,931 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-29 01:31:29,935 INFO L393 LassoCheck]: Loop: "assume !!!(0 == main_~x~0);" "assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1;" "main_~c~0 := 1 + main_~c~0;" [2020-07-29 01:31:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:29,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 01:31:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:29,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:30,029 INFO L280 TraceCheckUtils]: 0: Hoare triple {353#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; {353#unseeded} is VALID [2020-07-29 01:31:30,030 INFO L280 TraceCheckUtils]: 1: Hoare triple {353#unseeded} assume main_~x~0 > 0 && main_~y~0 > 0; {384#(and (< 0 ULTIMATE.start_main_~y~0) unseeded)} is VALID [2020-07-29 01:31:30,030 INFO L280 TraceCheckUtils]: 2: Hoare triple {384#(and (< 0 ULTIMATE.start_main_~y~0) unseeded)} assume !!!(0 == main_~x~0); {384#(and (< 0 ULTIMATE.start_main_~y~0) unseeded)} is VALID [2020-07-29 01:31:30,031 INFO L280 TraceCheckUtils]: 3: Hoare triple {384#(and (< 0 ULTIMATE.start_main_~y~0) unseeded)} assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; {391#(and (<= 1 ULTIMATE.start_main_~x~0) unseeded)} is VALID [2020-07-29 01:31:30,032 INFO L280 TraceCheckUtils]: 4: Hoare triple {391#(and (<= 1 ULTIMATE.start_main_~x~0) unseeded)} main_~c~0 := 1 + main_~c~0; {372#(and (>= ULTIMATE.start_main_~x~0 0) unseeded)} is VALID [2020-07-29 01:31:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:30,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-29 01:31:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:30,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:31:30,089 INFO L280 TraceCheckUtils]: 0: Hoare triple {373#(and (>= oldRank0 ULTIMATE.start_main_~x~0) (>= ULTIMATE.start_main_~x~0 0))} assume !!!(0 == main_~x~0); {395#(and (not (= 0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~x~0 oldRank0) (<= 0 ULTIMATE.start_main_~x~0))} is VALID [2020-07-29 01:31:30,091 INFO L280 TraceCheckUtils]: 1: Hoare triple {395#(and (not (= 0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~x~0 oldRank0) (<= 0 ULTIMATE.start_main_~x~0))} assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; {399#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (not (= 0 (+ ULTIMATE.start_main_~x~0 1))) (<= 0 (+ ULTIMATE.start_main_~x~0 1)))} is VALID [2020-07-29 01:31:30,092 INFO L280 TraceCheckUtils]: 2: Hoare triple {399#(and (<= (+ ULTIMATE.start_main_~x~0 1) oldRank0) (not (= 0 (+ ULTIMATE.start_main_~x~0 1))) (<= 0 (+ ULTIMATE.start_main_~x~0 1)))} main_~c~0 := 1 + main_~c~0; {375#(and (>= ULTIMATE.start_main_~x~0 0) (or (and (> oldRank0 ULTIMATE.start_main_~x~0) (>= oldRank0 0)) unseeded))} is VALID [2020-07-29 01:31:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:31:30,092 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-29 01:31:30,104 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:31:30,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,105 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2020-07-29 01:31:30,105 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2020-07-29 01:31:30,225 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 28 states and 35 transitions. Complement of second has 10 states. [2020-07-29 01:31:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 3 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-29 01:31:30,225 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:30,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. cyclomatic complexity: 4 [2020-07-29 01:31:30,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:30,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:30,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-29 01:31:30,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:30,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:30,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:30,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2020-07-29 01:31:30,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:30,228 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:30,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:30,229 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 10 states and 12 transitions. cyclomatic complexity: 4 [2020-07-29 01:31:30,229 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:30,230 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 6 states. [2020-07-29 01:31:30,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:30,231 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2020-07-29 01:31:30,231 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 28 states and 35 transitions. cyclomatic complexity: 11 [2020-07-29 01:31:30,232 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:31:30,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:30,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:30,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:30,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 8 letters. Loop has 3 letters. [2020-07-29 01:31:30,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 8 letters. Loop has 3 letters. [2020-07-29 01:31:30,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 8 letters. Loop has 3 letters. [2020-07-29 01:31:30,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 28 letters. Loop has 28 letters. [2020-07-29 01:31:30,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 28 letters. Loop has 28 letters. [2020-07-29 01:31:30,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 28 letters. Loop has 28 letters. [2020-07-29 01:31:30,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:30,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:30,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 10 letters. Loop has 10 letters. [2020-07-29 01:31:30,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 7 letters. Loop has 7 letters. [2020-07-29 01:31:30,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 7 letters. Loop has 7 letters. [2020-07-29 01:31:30,239 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 7 letters. Loop has 7 letters. [2020-07-29 01:31:30,239 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:30,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:30,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 7 letters. Loop has 3 letters. [2020-07-29 01:31:30,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:30,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:30,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 6 letters. Loop has 3 letters. [2020-07-29 01:31:30,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:30,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:30,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:31:30,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 9 letters. Loop has 3 letters. [2020-07-29 01:31:30,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 9 letters. Loop has 3 letters. [2020-07-29 01:31:30,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 9 letters. Loop has 3 letters. [2020-07-29 01:31:30,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 10 letters. Loop has 3 letters. [2020-07-29 01:31:30,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 10 letters. Loop has 3 letters. [2020-07-29 01:31:30,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 10 letters. Loop has 3 letters. [2020-07-29 01:31:30,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 12 transitions. cyclomatic complexity: 4 Stem has 8 letters. Loop has 3 letters. [2020-07-29 01:31:30,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 8 letters. Loop has 3 letters. [2020-07-29 01:31:30,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 28 states and 35 transitions. cyclomatic complexity: 11 Stem has 8 letters. Loop has 3 letters. [2020-07-29 01:31:30,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,250 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:31:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-29 01:31:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2020-07-29 01:31:30,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:31:30,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2020-07-29 01:31:30,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2020-07-29 01:31:30,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:31:30,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. cyclomatic complexity: 11 [2020-07-29 01:31:30,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:30,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 24 transitions. [2020-07-29 01:31:30,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-29 01:31:30,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-29 01:31:30,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2020-07-29 01:31:30,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-29 01:31:30,257 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-07-29 01:31:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2020-07-29 01:31:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 11. [2020-07-29 01:31:30,259 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:31:30,259 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states and 24 transitions. Second operand 11 states. [2020-07-29 01:31:30,259 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states and 24 transitions. Second operand 11 states. [2020-07-29 01:31:30,259 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 11 states. [2020-07-29 01:31:30,260 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:30,262 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2020-07-29 01:31:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-07-29 01:31:30,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:30,263 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:30,263 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 19 states and 24 transitions. [2020-07-29 01:31:30,263 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 19 states and 24 transitions. [2020-07-29 01:31:30,264 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:30,266 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2020-07-29 01:31:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-07-29 01:31:30,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:30,267 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:30,267 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:31:30,268 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:31:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-29 01:31:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2020-07-29 01:31:30,269 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-07-29 01:31:30,269 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-07-29 01:31:30,269 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-29 01:31:30,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2020-07-29 01:31:30,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:30,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:30,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:30,271 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-07-29 01:31:30,271 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:31:30,271 INFO L794 eck$LassoCheckResult]: Stem: 455#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 456#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 451#L12-2 assume !!!(0 == main_~x~0); 452#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 459#L13-2 main_~c~0 := 1 + main_~c~0; 453#L12-2 assume !!!(0 == main_~x~0); 454#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 461#L13-2 main_~c~0 := 1 + main_~c~0; 458#L12-2 [2020-07-29 01:31:30,271 INFO L796 eck$LassoCheckResult]: Loop: 458#L12-2 assume !!!(0 == main_~x~0); 460#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 457#L13-2 main_~c~0 := 1 + main_~c~0; 458#L12-2 [2020-07-29 01:31:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:30,272 INFO L82 PathProgramCache]: Analyzing trace with hash -420185530, now seen corresponding path program 2 times [2020-07-29 01:31:30,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:30,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278098281] [2020-07-29 01:31:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:30,319 INFO L280 TraceCheckUtils]: 0: Hoare triple {571#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; {571#true} is VALID [2020-07-29 01:31:30,319 INFO L280 TraceCheckUtils]: 1: Hoare triple {571#true} assume main_~x~0 > 0 && main_~y~0 > 0; {571#true} is VALID [2020-07-29 01:31:30,320 INFO L280 TraceCheckUtils]: 2: Hoare triple {571#true} assume !!!(0 == main_~x~0); {571#true} is VALID [2020-07-29 01:31:30,321 INFO L280 TraceCheckUtils]: 3: Hoare triple {571#true} assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; {573#(<= (+ ULTIMATE.start_main_~x~0 1) ULTIMATE.start_main_~y~0)} is VALID [2020-07-29 01:31:30,322 INFO L280 TraceCheckUtils]: 4: Hoare triple {573#(<= (+ ULTIMATE.start_main_~x~0 1) ULTIMATE.start_main_~y~0)} main_~c~0 := 1 + main_~c~0; {573#(<= (+ ULTIMATE.start_main_~x~0 1) ULTIMATE.start_main_~y~0)} is VALID [2020-07-29 01:31:30,323 INFO L280 TraceCheckUtils]: 5: Hoare triple {573#(<= (+ ULTIMATE.start_main_~x~0 1) ULTIMATE.start_main_~y~0)} assume !!!(0 == main_~x~0); {573#(<= (+ ULTIMATE.start_main_~x~0 1) ULTIMATE.start_main_~y~0)} is VALID [2020-07-29 01:31:30,323 INFO L280 TraceCheckUtils]: 6: Hoare triple {573#(<= (+ ULTIMATE.start_main_~x~0 1) ULTIMATE.start_main_~y~0)} assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; {572#false} is VALID [2020-07-29 01:31:30,324 INFO L280 TraceCheckUtils]: 7: Hoare triple {572#false} main_~c~0 := 1 + main_~c~0; {572#false} is VALID [2020-07-29 01:31:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:31:30,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278098281] [2020-07-29 01:31:30,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:31:30,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 01:31:30,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594671569] [2020-07-29 01:31:30,330 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-29 01:31:30,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:30,330 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 3 times [2020-07-29 01:31:30,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:30,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154631178] [2020-07-29 01:31:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:30,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:30,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:30,338 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:30,363 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:30,364 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:30,364 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:30,364 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:30,364 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:31:30,364 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,364 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:30,364 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:30,364 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration4_Loop [2020-07-29 01:31:30,364 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:30,365 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:30,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,511 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:30,512 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:30,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:30,515 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 57 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 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:30,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:30,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:30,564 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:30,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:30,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:30,591 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:30,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:30,625 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:30,629 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 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:30,652 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:30,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:30,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:30,690 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] [2020-07-29 01:31:30,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:31:30,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:31:30,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:31:30,715 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-07-29 01:31:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:31:30,739 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-07-29 01:31:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:31:30,740 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:31:30,749 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:31:30,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2020-07-29 01:31:30,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:30,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 14 transitions. [2020-07-29 01:31:30,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-29 01:31:30,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-29 01:31:30,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2020-07-29 01:31:30,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-29 01:31:30,752 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-29 01:31:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2020-07-29 01:31:30,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2020-07-29 01:31:30,753 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:31:30,753 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states and 14 transitions. Second operand 11 states. [2020-07-29 01:31:30,753 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states and 14 transitions. Second operand 11 states. [2020-07-29 01:31:30,753 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 11 states. [2020-07-29 01:31:30,754 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:30,755 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-07-29 01:31:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-29 01:31:30,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:30,755 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:30,756 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 13 states and 14 transitions. [2020-07-29 01:31:30,756 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 13 states and 14 transitions. [2020-07-29 01:31:30,756 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:31:30,758 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-07-29 01:31:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-29 01:31:30,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:31:30,759 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:31:30,759 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:31:30,759 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:31:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-29 01:31:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-07-29 01:31:30,760 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-07-29 01:31:30,760 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-07-29 01:31:30,760 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-29 01:31:30,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2020-07-29 01:31:30,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:31:30,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:31:30,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:31:30,761 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2020-07-29 01:31:30,761 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:31:30,761 INFO L794 eck$LassoCheckResult]: Stem: 596#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 597#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 592#L12-2 assume !!!(0 == main_~x~0); 593#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 600#L13-2 main_~c~0 := 1 + main_~c~0; 594#L12-2 assume !!!(0 == main_~x~0); 595#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 602#L13-2 main_~c~0 := 1 + main_~c~0; 599#L12-2 [2020-07-29 01:31:30,761 INFO L796 eck$LassoCheckResult]: Loop: 599#L12-2 assume !!!(0 == main_~x~0); 601#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 598#L13-2 main_~c~0 := 1 + main_~c~0; 599#L12-2 [2020-07-29 01:31:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:30,762 INFO L82 PathProgramCache]: Analyzing trace with hash -422032572, now seen corresponding path program 3 times [2020-07-29 01:31:30,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:30,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632712231] [2020-07-29 01:31:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:31:30,785 INFO L280 TraceCheckUtils]: 0: Hoare triple {682#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; {682#true} is VALID [2020-07-29 01:31:30,786 INFO L280 TraceCheckUtils]: 1: Hoare triple {682#true} assume main_~x~0 > 0 && main_~y~0 > 0; {682#true} is VALID [2020-07-29 01:31:30,786 INFO L280 TraceCheckUtils]: 2: Hoare triple {682#true} assume !!!(0 == main_~x~0); {682#true} is VALID [2020-07-29 01:31:30,787 INFO L280 TraceCheckUtils]: 3: Hoare triple {682#true} assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; {684#(= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)} is VALID [2020-07-29 01:31:30,787 INFO L280 TraceCheckUtils]: 4: Hoare triple {684#(= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)} main_~c~0 := 1 + main_~c~0; {684#(= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)} is VALID [2020-07-29 01:31:30,788 INFO L280 TraceCheckUtils]: 5: Hoare triple {684#(= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)} assume !!!(0 == main_~x~0); {684#(= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)} is VALID [2020-07-29 01:31:30,789 INFO L280 TraceCheckUtils]: 6: Hoare triple {684#(= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)} assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; {683#false} is VALID [2020-07-29 01:31:30,789 INFO L280 TraceCheckUtils]: 7: Hoare triple {683#false} main_~c~0 := 1 + main_~c~0; {683#false} is VALID [2020-07-29 01:31:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:31:30,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632712231] [2020-07-29 01:31:30,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:31:30,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 01:31:30,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696420966] [2020-07-29 01:31:30,790 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-29 01:31:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:31:30,791 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 4 times [2020-07-29 01:31:30,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:31:30,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603904699] [2020-07-29 01:31:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:31:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:30,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:31:30,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:31:30,798 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:31:30,819 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:31:30,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:31:30,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:31:30,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:31:30,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:31:30,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:31:30,820 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:31:30,820 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration5_Loop [2020-07-29 01:31:30,820 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:31:30,820 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:31:30,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:31:30,980 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:31:30,980 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:30,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:30,987 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:30,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:30,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:31,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:31,015 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:31,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:31,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:31:31,065 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:31,065 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}] Lambdas: [1, 15, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:31,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:31,115 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:31,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:31,127 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:31,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:31:31,167 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 67 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:31:31,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:31:31,207 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:31:31,221 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:31:31,221 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] [2020-07-29 01:31:31,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:31:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:31:31,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:31:31,242 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-07-29 01:31:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:31:31,253 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-29 01:31:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:31:31,253 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:31:31,263 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:31:31,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 6 transitions. [2020-07-29 01:31:31,264 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:31:31,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2020-07-29 01:31:31,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 01:31:31,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 01:31:31,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 01:31:31,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 01:31:31,265 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:31:31,265 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:31:31,265 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:31:31,265 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-29 01:31:31,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 01:31:31,265 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:31:31,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 01:31:31,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 01:31:31 BoogieIcfgContainer [2020-07-29 01:31:31,272 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 01:31:31,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:31:31,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:31:31,273 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:31:31,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:31:23" (3/4) ... [2020-07-29 01:31:31,276 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 01:31:31,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:31:31,278 INFO L168 Benchmark]: Toolchain (without parser) took 8447.82 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 303.0 MB). Free memory was 961.6 MB in the beginning and 1.0 GB in the end (delta: -70.1 MB). Peak memory consumption was 232.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:31:31,279 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:31:31,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.40 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:31:31,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:31:31,280 INFO L168 Benchmark]: Boogie Preprocessor took 24.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:31:31,281 INFO L168 Benchmark]: RCFGBuilder took 291.72 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2020-07-29 01:31:31,281 INFO L168 Benchmark]: BuchiAutomizer took 7745.29 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 165.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.5 MB). Peak memory consumption was 247.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:31:31,282 INFO L168 Benchmark]: Witness Printer took 3.73 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2020-07-29 01:31:31,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.40 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 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 100.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 291.72 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7745.29 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 165.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.5 MB). Peak memory consumption was 247.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.73 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * y + x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 7 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.6s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 6.2s. Construction of modules took 0.0s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 3. Nontrivial modules had stage [2, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 33 SDtfs, 26 SDslu, 13 SDs, 0 SdLazy, 43 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax154 hnf96 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf95 smp100 dnf157 smp100 tf103 neg94 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 68ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 11 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...