./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/PastaA10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/PastaA10.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 eb84f41e050e85d4fc46b55b68b36040bcbf2911 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:35:47,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:35:47,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:35:47,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:35:47,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:35:47,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:35:47,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:35:47,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:35:47,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:35:47,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:35:47,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:35:47,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:35:47,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:35:47,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:35:47,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:35:47,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:35:47,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:35:47,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:35:47,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:35:47,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:35:47,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:35:47,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:35:47,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:35:47,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:35:47,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:35:47,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:35:47,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:35:47,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:35:47,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:35:47,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:35:47,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:35:47,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:35:47,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:35:47,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:35:47,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:35:47,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:35:47,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:35:47,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:35:47,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:35:47,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:35:47,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:35:47,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:35:47,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:35:47,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:35:47,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:35:47,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:35:47,937 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:35:47,938 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:35:47,938 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:35:47,938 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:35:47,938 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:35:47,938 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:35:47,939 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:35:47,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:35:47,939 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:35:47,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:35:47,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:35:47,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:35:47,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:35:47,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:35:47,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:35:47,940 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:35:47,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:35:47,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:35:47,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:35:47,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:35:47,941 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:35:47,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:35:47,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:35:47,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:35:47,942 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:35:47,943 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:35:47,943 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 -> eb84f41e050e85d4fc46b55b68b36040bcbf2911 [2020-10-20 06:35:48,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:35:48,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:35:48,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:35:48,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:35:48,200 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:35:48,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/PastaA10.c [2020-10-20 06:35:48,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d2f68f4/8798c8c435d24f48a69260572d62af9e/FLAGf0f8b724d [2020-10-20 06:35:48,773 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:35:48,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/PastaA10.c [2020-10-20 06:35:48,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d2f68f4/8798c8c435d24f48a69260572d62af9e/FLAGf0f8b724d [2020-10-20 06:35:49,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15d2f68f4/8798c8c435d24f48a69260572d62af9e [2020-10-20 06:35:49,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:35:49,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:35:49,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:49,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:35:49,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:35:49,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a2fc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49, skipping insertion in model container [2020-10-20 06:35:49,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:35:49,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:35:49,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:49,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:35:49,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:49,468 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:35:49,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49 WrapperNode [2020-10-20 06:35:49,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:49,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:49,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:35:49,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:35:49,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:49,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:35:49,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:35:49,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:35:49,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (1/1) ... [2020-10-20 06:35:49,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:35:49,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:35:49,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:35:49,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:35:49,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (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 [2020-10-20 06:35:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:35:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:35:49,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:35:49,714 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:35:49,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:49 BoogieIcfgContainer [2020-10-20 06:35:49,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:35:49,723 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:35:49,723 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:35:49,727 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:35:49,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:49,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:35:49" (1/3) ... [2020-10-20 06:35:49,730 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1363ca63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:49, skipping insertion in model container [2020-10-20 06:35:49,730 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:49,730 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:49" (2/3) ... [2020-10-20 06:35:49,731 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1363ca63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:49, skipping insertion in model container [2020-10-20 06:35:49,731 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:49,731 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:49" (3/3) ... [2020-10-20 06:35:49,733 INFO L373 chiAutomizerObserver]: Analyzing ICFG PastaA10.c [2020-10-20 06:35:49,784 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:35:49,785 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:35:49,785 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:35:49,785 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:35:49,785 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:35:49,785 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:35:49,786 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:35:49,786 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:35:49,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:35:49,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:49,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:49,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:49,831 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:49,831 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:49,831 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:35:49,832 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:35:49,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:49,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:49,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:49,833 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:49,833 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:49,840 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L12-2true [2020-10-20 06:35:49,840 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~x~0 != main_~y~0); 5#L12true assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 3#L12-2true [2020-10-20 06:35:49,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:49,846 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:35:49,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:49,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493251334] [2020-10-20 06:35:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:49,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:49,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:49,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:49,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-20 06:35:49,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:49,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422893179] [2020-10-20 06:35:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:49,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:49,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:49,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-20 06:35:49,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:49,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125125643] [2020-10-20 06:35:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:49,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:49,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:49,998 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:50,071 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:50,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:50,072 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:50,072 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:50,073 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:50,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:50,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:50,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration1_Loop [2020-10-20 06:35:50,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:50,075 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:50,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:50,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:50,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:50,211 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:50,212 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:50,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:50,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:50,241 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:50,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:50,276 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:50,277 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:50,309 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-20 06:35:50,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:50,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:50,477 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:50,479 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:50,479 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:50,479 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:50,480 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:50,480 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:50,480 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,480 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:50,480 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:50,480 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration1_Loop [2020-10-20 06:35:50,485 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:50,485 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:50,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:50,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:50,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:50,563 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:50,569 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 06:35:50,589 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 [2020-10-20 06:35:50,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:50,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:50,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:50,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:50,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:50,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,608 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 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 [2020-10-20 06:35:50,637 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 [2020-10-20 06:35:50,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:50,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:50,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:50,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:50,642 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:50,643 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:50,648 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,681 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 [2020-10-20 06:35:50,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:50,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:50,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:50,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:50,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:50,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:50,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:50,691 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:50,712 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 06:35:50,712 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:50,722 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:50,723 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:50,723 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:50,724 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:50,758 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:50,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:50,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:50,832 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:50,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:50,855 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 06:35:50,857 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-20 06:35:50,913 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2020-10-20 06:35:50,914 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 [2020-10-20 06:35:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:35:50,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-20 06:35:50,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:50,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:35:50,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:50,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-20 06:35:50,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:50,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-10-20 06:35:50,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:50,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-10-20 06:35:50,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:50,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:35:50,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-10-20 06:35:50,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:50,932 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-10-20 06:35:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-20 06:35:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-20 06:35:50,960 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:50,960 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:50,961 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:35:50,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-20 06:35:50,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:50,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:50,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:50,962 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:35:50,962 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:50,963 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 69#L12-2 assume !!(main_~x~0 != main_~y~0); 67#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 63#L12-2 [2020-10-20 06:35:50,963 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!(main_~x~0 != main_~y~0); 64#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 63#L12-2 [2020-10-20 06:35:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-20 06:35:50,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:50,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552450231] [2020-10-20 06:35:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:50,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:50,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:50,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-10-20 06:35:50,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:50,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743071836] [2020-10-20 06:35:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:50,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:50,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:50,986 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:50,987 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-10-20 06:35:50,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:50,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580332989] [2020-10-20 06:35:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:51,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580332989] [2020-10-20 06:35:51,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901523477] [2020-10-20 06:35:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:35:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:51,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:51,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:51,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:35:51,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-20 06:35:51,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172804646] [2020-10-20 06:35:51,173 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:51,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:51,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:51,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:51,174 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:51,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:51,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:51,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:51,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration2_Loop [2020-10-20 06:35:51,175 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:51,175 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:51,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,243 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:51,243 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2020-10-20 06:35:51,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:51,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:51,261 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:51,261 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:51,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:51,298 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:51,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:51,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:51,471 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:51,473 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:51,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:51,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:51,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:51,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:51,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:51,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:51,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:51,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration2_Loop [2020-10-20 06:35:51,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:51,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:51,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,530 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:51,530 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:51,543 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 [2020-10-20 06:35:51,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:51,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:51,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:51,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:51,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:51,547 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:51,547 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:51,550 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:51,554 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:51,554 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:51,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:51,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:51,569 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:51,569 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:51,596 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:51,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:51,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:51,623 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:51,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:51,624 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 06:35:51,624 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 06:35:51,649 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2020-10-20 06:35:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-20 06:35:51,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:35:51,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:51,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:35:51,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:51,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-10-20 06:35:51,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:51,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-10-20 06:35:51,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:51,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-10-20 06:35:51,655 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:35:51,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:35:51,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-10-20 06:35:51,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:51,656 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-20 06:35:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-10-20 06:35:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 06:35:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 06:35:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-10-20 06:35:51,660 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-20 06:35:51,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:51,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:35:51,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:35:51,665 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2020-10-20 06:35:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:51,722 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-10-20 06:35:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:35:51,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-10-20 06:35:51,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:51,725 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2020-10-20 06:35:51,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-20 06:35:51,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:35:51,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2020-10-20 06:35:51,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:51,725 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-10-20 06:35:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2020-10-20 06:35:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-10-20 06:35:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:35:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-10-20 06:35:51,727 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 06:35:51,727 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 06:35:51,730 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:35:51,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-10-20 06:35:51,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:51,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:51,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:51,732 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:35:51,732 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:51,732 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 158#L12-2 assume !!(main_~x~0 != main_~y~0); 154#L12 [2020-10-20 06:35:51,732 INFO L796 eck$LassoCheckResult]: Loop: 154#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 153#L12-2 assume !!(main_~x~0 != main_~y~0); 154#L12 [2020-10-20 06:35:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:35:51,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:51,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761874678] [2020-10-20 06:35:51,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:51,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:51,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:51,755 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:51,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-10-20 06:35:51,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:51,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903048585] [2020-10-20 06:35:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:51,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:51,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:51,774 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:51,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:51,776 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2020-10-20 06:35:51,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:51,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156864346] [2020-10-20 06:35:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:51,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:51,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:51,797 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:51,816 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:51,816 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:51,816 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:51,817 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:51,817 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:51,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:51,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:51,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:51,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration3_Loop [2020-10-20 06:35:51,818 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:51,818 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:51,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:51,921 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:51,921 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 06:35:51,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:51,933 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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 [2020-10-20 06:35:51,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:51,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:54,245 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:54,247 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:54,247 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:54,247 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:54,248 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:54,248 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:54,248 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:54,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:54,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:54,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration3_Loop [2020-10-20 06:35:54,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:54,248 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:54,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:54,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:54,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:54,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:54,355 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 06:35:54,371 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 [2020-10-20 06:35:54,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:54,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:54,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:54,373 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:35:54,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:54,375 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:35:54,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:54,381 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:54,385 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:54,385 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. 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 [2020-10-20 06:35:54,388 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:54,388 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:54,389 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:54,389 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-10-20 06:35:54,409 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:54,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:54,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:54,438 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:54,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:54,465 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 [2020-10-20 06:35:54,465 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-20 06:35:54,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2020-10-20 06:35:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-20 06:35:54,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-20 06:35:54,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:54,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:54,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:54,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-20 06:35:54,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:54,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-10-20 06:35:54,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:54,481 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2020-10-20 06:35:54,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:54,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-20 06:35:54,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2020-10-20 06:35:54,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:54,482 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-10-20 06:35:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2020-10-20 06:35:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-10-20 06:35:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:35:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2020-10-20 06:35:54,483 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2020-10-20 06:35:54,484 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2020-10-20 06:35:54,484 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:35:54,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2020-10-20 06:35:54,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:54,485 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:54,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:54,485 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-10-20 06:35:54,485 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:54,486 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 203#L12-2 assume !!(main_~x~0 != main_~y~0); 204#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 205#L12-2 assume !!(main_~x~0 != main_~y~0); 206#L12 [2020-10-20 06:35:54,486 INFO L796 eck$LassoCheckResult]: Loop: 206#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 208#L12-2 assume !!(main_~x~0 != main_~y~0); 206#L12 [2020-10-20 06:35:54,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:54,486 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-10-20 06:35:54,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:54,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447676512] [2020-10-20 06:35:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:54,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:54,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:54,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:54,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-10-20 06:35:54,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:54,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807217419] [2020-10-20 06:35:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:54,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:54,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:54,506 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:54,507 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2020-10-20 06:35:54,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:54,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135768115] [2020-10-20 06:35:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:54,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135768115] [2020-10-20 06:35:54,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:54,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:35:54,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131751288] [2020-10-20 06:35:54,588 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:54,588 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:54,588 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:54,589 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:54,589 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:54,589 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:54,589 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:54,589 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:54,589 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration4_Loop [2020-10-20 06:35:54,589 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:54,589 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:54,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:54,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:54,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:54,686 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:54,686 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 06:35:54,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:54,697 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:54,701 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:54,701 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} 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) [2020-10-20 06:35:54,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:54,743 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 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 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 [2020-10-20 06:35:54,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:54,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:56,783 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:56,786 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:56,786 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:56,786 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:56,786 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:56,786 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:56,786 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:56,786 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:56,786 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:56,786 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration4_Loop [2020-10-20 06:35:56,787 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:56,787 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:56,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:56,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:56,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:56,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:56,875 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2020-10-20 06:35:56,879 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 [2020-10-20 06:35:56,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:56,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:56,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:56,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:56,884 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:56,884 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:56,887 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:56,910 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 Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:56,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:56,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:56,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:56,913 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:35:56,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:56,914 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:35:56,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:56,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:56,922 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:56,922 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. 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 [2020-10-20 06:35:56,925 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:56,925 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:56,925 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:56,926 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-10-20 06:35:56,947 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:56,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:56,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:56,975 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:56,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:57,002 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 [2020-10-20 06:35:57,002 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 06:35:57,020 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2020-10-20 06:35:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2020-10-20 06:35:57,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:57,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:57,022 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:57,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:57,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:57,056 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:57,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:57,084 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:35:57,085 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 06:35:57,096 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2020-10-20 06:35:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2020-10-20 06:35:57,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:57,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:57,098 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:57,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:57,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:57,129 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:57,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:57,157 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:35:57,157 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 06:35:57,169 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2020-10-20 06:35:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:35:57,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:57,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:57,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:35:57,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:57,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-20 06:35:57,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:57,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2020-10-20 06:35:57,175 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:57,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-10-20 06:35:57,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:35:57,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:35:57,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:35:57,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:57,175 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:57,175 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:57,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:57,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:35:57,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:35:57,176 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-10-20 06:35:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:57,176 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 06:35:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:35:57,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 06:35:57,177 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:57,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:35:57,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:35:57,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:35:57,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:35:57,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:57,177 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:57,177 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:57,178 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:57,178 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:35:57,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:35:57,178 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:57,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:35:57,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:35:57 BoogieIcfgContainer [2020-10-20 06:35:57,186 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:35:57,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:35:57,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:35:57,187 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:35:57,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:49" (3/4) ... [2020-10-20 06:35:57,190 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:35:57,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:35:57,192 INFO L168 Benchmark]: Toolchain (without parser) took 8100.41 ms. Allocated memory was 35.7 MB in the beginning and 50.9 MB in the end (delta: 15.2 MB). Free memory was 15.9 MB in the beginning and 14.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,193 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 9.7 MB in the beginning and 9.6 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.32 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 15.0 MB in the beginning and 27.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 44.6 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,196 INFO L168 Benchmark]: Boogie Preprocessor took 17.43 ms. Allocated memory is still 44.6 MB. Free memory was 26.0 MB in the beginning and 24.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,197 INFO L168 Benchmark]: RCFGBuilder took 201.52 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 24.8 MB in the beginning and 27.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,198 INFO L168 Benchmark]: BuchiAutomizer took 7463.17 ms. Allocated memory was 46.1 MB in the beginning and 50.9 MB in the end (delta: 4.7 MB). Free memory was 27.3 MB in the beginning and 15.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,198 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 50.9 MB. Free memory was 15.2 MB in the beginning and 14.8 MB in the end (delta: 432.2 kB). Peak memory consumption was 432.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:57,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 9.7 MB in the beginning and 9.6 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 372.32 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 15.0 MB in the beginning and 27.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 44.6 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.43 ms. Allocated memory is still 44.6 MB. Free memory was 26.0 MB in the beginning and 24.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 201.52 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 24.8 MB in the beginning and 27.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 7463.17 ms. Allocated memory was 46.1 MB in the beginning and 50.9 MB in the end (delta: 4.7 MB). Free memory was 27.3 MB in the beginning and 15.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. * Witness Printer took 3.98 ms. Allocated memory is still 50.9 MB. Free memory was 15.2 MB in the beginning and 14.8 MB in the end (delta: 432.2 kB). Peak memory consumption was 432.2 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One deterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...