./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.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-crafted/Pure2Phase-1.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 2291f924dd9adb1923bbd2b3119647838e71c665 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:33:24,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:33:24,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:33:24,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:33:24,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:33:24,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:33:24,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:33:24,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:33:24,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:33:24,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:33:24,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:33:24,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:33:24,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:33:25,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:33:25,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:33:25,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:33:25,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:33:25,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:33:25,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:33:25,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:33:25,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:33:25,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:33:25,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:33:25,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:33:25,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:33:25,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:33:25,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:33:25,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:33:25,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:33:25,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:33:25,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:33:25,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:33:25,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:33:25,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:33:25,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:33:25,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:33:25,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:33:25,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:33:25,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:33:25,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:33:25,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:33:25,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:33:25,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:33:25,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:33:25,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:33:25,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:33:25,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:33:25,104 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:33:25,104 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:33:25,104 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:33:25,105 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:33:25,105 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:33:25,106 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:33:25,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:33:25,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:33:25,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:33:25,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:33:25,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:33:25,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:33:25,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:33:25,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:33:25,109 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:33:25,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:33:25,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:33:25,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:33:25,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:33:25,110 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:33:25,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:33:25,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:33:25,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:33:25,111 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:33:25,112 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:33:25,112 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 -> 2291f924dd9adb1923bbd2b3119647838e71c665 [2020-10-20 06:33:25,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:33:25,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:33:25,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:33:25,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:33:25,370 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:33:25,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2020-10-20 06:33:25,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af42a2c49/09cefe7d93b0474aa63ae6b5283f32b3/FLAG76a79f46b [2020-10-20 06:33:25,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:33:25,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2020-10-20 06:33:25,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af42a2c49/09cefe7d93b0474aa63ae6b5283f32b3/FLAG76a79f46b [2020-10-20 06:33:26,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af42a2c49/09cefe7d93b0474aa63ae6b5283f32b3 [2020-10-20 06:33:26,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:33:26,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:33:26,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:26,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:33:26,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:33:26,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cbd9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26, skipping insertion in model container [2020-10-20 06:33:26,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:33:26,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:33:26,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:26,595 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:33:26,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:26,620 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:33:26,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26 WrapperNode [2020-10-20 06:33:26,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:26,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:26,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:33:26,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:33:26,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:26,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:33:26,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:33:26,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:33:26,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (1/1) ... [2020-10-20 06:33:26,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:33:26,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:33:26,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:33:26,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:33:26,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (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 06:33:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:33:26,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:33:26,885 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:33:26,886 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:33:26,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:26 BoogieIcfgContainer [2020-10-20 06:33:26,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:33:26,888 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:33:26,888 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:33:26,892 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:33:26,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:26,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:33:26" (1/3) ... [2020-10-20 06:33:26,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aa55db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:26, skipping insertion in model container [2020-10-20 06:33:26,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:26,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:26" (2/3) ... [2020-10-20 06:33:26,895 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aa55db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:26, skipping insertion in model container [2020-10-20 06:33:26,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:26,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:26" (3/3) ... [2020-10-20 06:33:26,897 INFO L373 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2020-10-20 06:33:26,948 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:33:26,948 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:33:26,948 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:33:26,949 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:33:26,949 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:33:26,949 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:33:26,949 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:33:26,949 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:33:26,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-10-20 06:33:26,991 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:33:26,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:26,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:27,008 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:33:27,010 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:33:27,010 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:33:27,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-10-20 06:33:27,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:33:27,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:27,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:27,017 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:33:27,017 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:33:27,038 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L20true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 3#L21true assume !!(main_~z~0 <= 1073741823); 7#L24-2true [2020-10-20 06:33:27,041 INFO L796 eck$LassoCheckResult]: Loop: 7#L24-2true assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 9#L24true assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 7#L24-2true [2020-10-20 06:33:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:27,057 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2020-10-20 06:33:27,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:27,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188157661] [2020-10-20 06:33:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:27,175 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:27,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:27,198 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:27,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:27,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 1 times [2020-10-20 06:33:27,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:27,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474271969] [2020-10-20 06:33:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:27,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:27,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:27,217 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:27,219 INFO L82 PathProgramCache]: Analyzing trace with hash 29742639, now seen corresponding path program 1 times [2020-10-20 06:33:27,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:27,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826093706] [2020-10-20 06:33:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:27,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:27,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:27,236 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:27,309 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:27,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:27,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:27,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:27,310 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:27,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:27,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:27,311 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:27,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2020-10-20 06:33:27,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:27,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:27,335 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 06:33:27,350 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 06:33:27,356 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 06:33:27,366 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 06:33:27,475 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:27,476 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:27,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:27,491 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:27,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:27,504 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 06:33:27,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:27,534 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:27,544 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:27,545 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 06:33:27,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:27,568 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 06:33:27,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:27,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:27,624 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:27,626 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:27,626 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:27,626 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:27,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:27,626 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:27,626 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:27,626 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:27,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:27,627 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2020-10-20 06:33:27,627 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:27,627 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:27,629 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 06:33:27,642 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 06:33:27,648 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 06:33:27,659 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 06:33:27,752 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:27,759 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:27,778 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 06:33:27,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:27,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:27,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:27,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:27,793 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:27,793 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:33:27,808 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) [2020-10-20 06:33:27,857 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 06:33:27,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:27,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:27,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:27,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:27,868 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:27,868 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:27,876 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) [2020-10-20 06:33:27,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:33:27,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:27,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:27,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:27,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:27,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:27,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:27,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:27,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:27,942 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:33:27,942 INFO L444 ModelExtractionUtils]: 0 out of 3 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:27,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:27,956 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:27,956 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:27,957 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,001 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:28,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:28,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:28,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:28,103 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:28,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:28,133 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 06:33:28,151 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 06:33:28,153 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2020-10-20 06:33:28,219 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 8 states. [2020-10-20 06:33:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:33:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:33:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-10-20 06:33:28,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:33:28,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:28,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:33:28,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:28,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2020-10-20 06:33:28,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:28,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2020-10-20 06:33:28,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:33:28,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 13 transitions. [2020-10-20 06:33:28,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-20 06:33:28,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 06:33:28,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-10-20 06:33:28,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:33:28,245 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 06:33:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-10-20 06:33:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 06:33:28,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 06:33:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-10-20 06:33:28,274 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 06:33:28,274 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 06:33:28,274 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:33:28,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-10-20 06:33:28,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:33:28,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:28,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:28,276 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 06:33:28,276 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:33:28,277 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 85#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 82#L21 assume !!(main_~z~0 <= 1073741823); 83#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 91#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2020-10-20 06:33:28,277 INFO L796 eck$LassoCheckResult]: Loop: 86#L27 assume !!(main_~z~0 <= 1073741823); 87#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 88#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2020-10-20 06:33:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash 29742632, now seen corresponding path program 1 times [2020-10-20 06:33:28,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:28,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286687719] [2020-10-20 06:33:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,290 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,292 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:28,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,293 INFO L82 PathProgramCache]: Analyzing trace with hash 57342, now seen corresponding path program 1 times [2020-10-20 06:33:28,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:28,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505024056] [2020-10-20 06:33:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,306 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514487, now seen corresponding path program 1 times [2020-10-20 06:33:28,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:28,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435333490] [2020-10-20 06:33:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:28,354 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:28,355 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:28,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:28,355 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:28,355 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:28,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:28,356 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:28,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2020-10-20 06:33:28,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:28,356 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:28,358 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 06:33:28,362 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 06:33:28,365 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 06:33:28,379 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 06:33:28,439 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:28,439 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:28,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:28,447 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:28,447 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:28,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:28,485 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:28,489 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:33:28,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:28,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:28,524 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:28,524 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=530309120, ULTIMATE.start_main_~z~0=530309120} Honda state: {ULTIMATE.start_main_#t~nondet2=530309120, ULTIMATE.start_main_~z~0=530309120} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 06:33:28,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:28,552 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 06:33:28,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:28,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:28,648 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:28,650 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:28,650 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:28,650 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:28,650 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:28,650 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:28,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,651 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:28,651 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:28,651 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2020-10-20 06:33:28,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:28,651 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:28,653 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 06:33:28,657 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 06:33:28,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:28,667 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 06:33:28,721 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:28,722 INFO L489 LassoAnalysis]: Using template 'affine'. 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 06:33:28,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:33:28,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:28,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:28,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:28,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:28,740 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:28,740 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,749 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,775 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 06:33:28,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:28,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:28,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:28,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:28,780 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:28,780 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:33:28,791 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 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 06:33:28,813 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 06:33:28,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:28,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:28,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:28,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:28,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:28,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:28,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:33:28,826 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:28,874 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:28,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:28,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:28,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:28,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:28,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:28,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:28,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:33:28,896 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:28,900 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:33:28,900 INFO L444 ModelExtractionUtils]: 0 out of 3 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 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 06:33:28,906 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:28,907 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:28,907 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:28,907 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-20 06:33:28,946 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:28,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:28,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:28,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:28,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:29,020 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 06:33:29,021 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 06:33:29,021 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-10-20 06:33:29,048 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 15 states and 20 transitions. Complement of second has 6 states. [2020-10-20 06:33:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:33:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:33:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:33:29,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:33:29,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:29,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:33:29,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:29,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2020-10-20 06:33:29,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:29,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2020-10-20 06:33:29,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:29,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 20 transitions. [2020-10-20 06:33:29,053 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 06:33:29,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-20 06:33:29,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-10-20 06:33:29,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:33:29,055 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-20 06:33:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-10-20 06:33:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-10-20 06:33:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 06:33:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2020-10-20 06:33:29,058 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-10-20 06:33:29,058 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-10-20 06:33:29,058 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:33:29,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2020-10-20 06:33:29,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:29,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:29,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:29,060 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:33:29,060 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:33:29,061 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 154#L21 assume !!(main_~z~0 <= 1073741823); 155#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 163#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L27 assume !!(main_~z~0 <= 1073741823); 160#L24-2 [2020-10-20 06:33:29,061 INFO L796 eck$LassoCheckResult]: Loop: 160#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 165#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 160#L24-2 [2020-10-20 06:33:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:29,062 INFO L82 PathProgramCache]: Analyzing trace with hash 922021620, now seen corresponding path program 2 times [2020-10-20 06:33:29,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:29,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540498190] [2020-10-20 06:33:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,075 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:29,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:29,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 2 times [2020-10-20 06:33:29,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:29,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069259277] [2020-10-20 06:33:29,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,086 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:29,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:29,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514494, now seen corresponding path program 1 times [2020-10-20 06:33:29,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:29,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932354149] [2020-10-20 06:33:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,108 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:29,154 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:29,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:29,155 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:29,155 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:29,155 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:29,155 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:29,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:29,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2020-10-20 06:33:29,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:29,176 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:29,179 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 06:33:29,218 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 06:33:29,227 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 06:33:29,231 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 06:33:29,303 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:29,304 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 06:33:29,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,317 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 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 06:33:29,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:29,375 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 [2020-10-20 06:33:29,417 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:29,419 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:29,420 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:29,420 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:29,420 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:29,420 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:29,420 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,421 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:29,421 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:29,421 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2020-10-20 06:33:29,421 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:29,421 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:29,423 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 06:33:29,430 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 06:33:29,438 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 06:33:29,442 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 06:33:29,526 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:29,527 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 06:33:29,532 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 06:33:29,535 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:29,535 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:29,535 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:29,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:29,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:29,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:29,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,542 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:29,546 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:33:29,546 INFO L444 ModelExtractionUtils]: 0 out of 3 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:29,550 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:29,551 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:29,551 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:29,551 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,588 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:29,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:29,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:29,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:29,633 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:29,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:29,643 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 06:33:29,643 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 06:33:29,643 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-20 06:33:29,657 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 20 states and 27 transitions. Complement of second has 5 states. [2020-10-20 06:33:29,657 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 06:33:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:33:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:33:29,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:33:29,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:29,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-20 06:33:29,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:29,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:33:29,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:29,659 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2020-10-20 06:33:29,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:29,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 21 transitions. [2020-10-20 06:33:29,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 06:33:29,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 06:33:29,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2020-10-20 06:33:29,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:33:29,662 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-10-20 06:33:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2020-10-20 06:33:29,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 06:33:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 06:33:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2020-10-20 06:33:29,664 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-10-20 06:33:29,664 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-10-20 06:33:29,664 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:33:29,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2020-10-20 06:33:29,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:29,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:29,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:29,666 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2020-10-20 06:33:29,666 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:33:29,667 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 235#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 232#L21 assume !!(main_~z~0 <= 1073741823); 233#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 242#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 236#L27 assume !!(main_~z~0 <= 1073741823); 237#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 246#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 238#L27 assume !!(main_~z~0 <= 1073741823); 239#L24-2 [2020-10-20 06:33:29,667 INFO L796 eck$LassoCheckResult]: Loop: 239#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 244#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 239#L24-2 [2020-10-20 06:33:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:29,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1630243461, now seen corresponding path program 3 times [2020-10-20 06:33:29,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:29,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319836453] [2020-10-20 06:33:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,682 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:29,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 3 times [2020-10-20 06:33:29,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:29,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063852130] [2020-10-20 06:33:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,692 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:29,692 INFO L82 PathProgramCache]: Analyzing trace with hash -999096369, now seen corresponding path program 2 times [2020-10-20 06:33:29,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:29,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998347195] [2020-10-20 06:33:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:29,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:29,711 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:29,733 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:29,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:29,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:29,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:29,734 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:29,742 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,742 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:29,742 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:29,743 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2020-10-20 06:33:29,743 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:29,743 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:29,744 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 06:33:29,782 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 06:33:29,788 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 06:33:29,794 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 06:33:29,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:29,839 INFO L404 LassoAnalysis]: Checking for nontermination... 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 06:33:29,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,849 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,853 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:29,853 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:29,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,880 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:29,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:29,935 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:29,936 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:29,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:29,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:29,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:29,937 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:29,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:29,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:29,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2020-10-20 06:33:29,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:29,937 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:29,939 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 06:33:29,944 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 06:33:29,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:29,956 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 06:33:30,011 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:30,012 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:30,016 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 06:33:30,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:30,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:30,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:30,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:30,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:30,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:30,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:30,025 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:33:30,025 INFO L444 ModelExtractionUtils]: 0 out of 3 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:30,027 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:30,027 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:30,028 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:30,028 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:30,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,077 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,087 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 06:33:30,087 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 06:33:30,087 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 06:33:30,097 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2020-10-20 06:33:30,098 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 06:33:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:33:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:33:30,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2020-10-20 06:33:30,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,099 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:33:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,122 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,131 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 06:33:30,131 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 06:33:30,131 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 06:33:30,142 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2020-10-20 06:33:30,143 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 06:33:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:33:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:33:30,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2020-10-20 06:33:30,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,144 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:33:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,213 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,222 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 06:33:30,222 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 06:33:30,223 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 06:33:30,242 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 4 states. [2020-10-20 06:33:30,243 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 06:33:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:33:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-20 06:33:30,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2020-10-20 06:33:30,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2020-10-20 06:33:30,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-20 06:33:30,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,245 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2020-10-20 06:33:30,247 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:33:30,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-10-20 06:33:30,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:33:30,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:33:30,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:33:30,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:33:30,248 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:30,248 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:30,248 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:30,249 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:33:30,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:33:30,249 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:33:30,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:33:30,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:33:30 BoogieIcfgContainer [2020-10-20 06:33:30,259 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:33:30,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:33:30,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:33:30,260 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:33:30,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:26" (3/4) ... [2020-10-20 06:33:30,270 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:33:30,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:33:30,273 INFO L168 Benchmark]: Toolchain (without parser) took 3888.75 ms. Allocated memory was 40.4 MB in the beginning and 51.9 MB in the end (delta: 11.5 MB). Free memory was 18.0 MB in the beginning and 28.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 626.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:33:30,278 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 30.9 MB. Free memory was 17.0 MB in the beginning and 17.0 MB in the end (delta: 32.1 kB). Peak memory consumption was 32.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:33:30,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.31 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.1 MB in the beginning and 18.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:30,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.23 ms. Allocated memory is still 41.4 MB. Free memory was 18.8 MB in the beginning and 17.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:30,282 INFO L168 Benchmark]: Boogie Preprocessor took 15.42 ms. Allocated memory is still 41.4 MB. Free memory was 17.4 MB in the beginning and 16.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:30,285 INFO L168 Benchmark]: RCFGBuilder took 221.31 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 16.1 MB in the beginning and 21.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:30,286 INFO L168 Benchmark]: BuchiAutomizer took 3371.06 ms. Allocated memory was 42.5 MB in the beginning and 51.9 MB in the end (delta: 9.4 MB). Free memory was 21.0 MB in the beginning and 28.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:30,286 INFO L168 Benchmark]: Witness Printer took 10.52 ms. Allocated memory is still 51.9 MB. Free memory is still 28.9 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:33:30,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 30.9 MB. Free memory was 17.0 MB in the beginning and 17.0 MB in the end (delta: 32.1 kB). Peak memory consumption was 32.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 228.31 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.1 MB in the beginning and 18.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 29.23 ms. Allocated memory is still 41.4 MB. Free memory was 18.8 MB in the beginning and 17.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 15.42 ms. Allocated memory is still 41.4 MB. Free memory was 17.4 MB in the beginning and 16.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 221.31 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 16.1 MB in the beginning and 21.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3371.06 ms. Allocated memory was 42.5 MB in the beginning and 51.9 MB in the end (delta: 9.4 MB). Free memory was 21.0 MB in the beginning and 28.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Witness Printer took 10.52 ms. Allocated memory is still 51.9 MB. Free memory is still 28.9 MB. There was no memory consumed. 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * z + 1 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 8 SDs, 0 SdLazy, 34 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...