./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/sum04-1.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/sum04-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash aeade23d65797ff650f62ff8e383f015764d9ed2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 02:05:48,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:05:48,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:05:48,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:05:48,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:05:48,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:05:48,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:05:48,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:05:48,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:05:48,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:05:48,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:05:48,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:05:48,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:05:48,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:05:48,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:05:48,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:05:48,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:05:48,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:05:48,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:05:48,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:05:48,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:05:48,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:05:48,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:05:48,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:05:48,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:05:48,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:05:48,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:05:48,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:05:48,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:05:48,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:05:48,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:05:48,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:05:48,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:05:48,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:05:48,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:05:48,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:05:48,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:05:48,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:05:48,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:05:48,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:05:48,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:05:48,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:05:48,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:05:48,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:05:48,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:05:48,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:05:48,842 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:05:48,842 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:05:48,842 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:05:48,843 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:05:48,843 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:05:48,843 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:05:48,843 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:05:48,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:05:48,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:05:48,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:05:48,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:05:48,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:05:48,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:05:48,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:05:48,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:05:48,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:05:48,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:05:48,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:05:48,847 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:05:48,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:05:48,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:05:48,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:05:48,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:05:48,848 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:05:48,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:05:48,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:05:48,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:05:48,849 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:05:48,851 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:05:48,851 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aeade23d65797ff650f62ff8e383f015764d9ed2 [2020-07-29 02:05:49,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:05:49,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:05:49,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:05:49,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:05:49,220 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:05:49,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum04-1.i [2020-07-29 02:05:49,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ed85cc7/d1e619261f7d4eddab3aafe7ac0e76bb/FLAG901227ece [2020-07-29 02:05:49,830 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:05:49,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum04-1.i [2020-07-29 02:05:49,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ed85cc7/d1e619261f7d4eddab3aafe7ac0e76bb/FLAG901227ece [2020-07-29 02:05:50,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ed85cc7/d1e619261f7d4eddab3aafe7ac0e76bb [2020-07-29 02:05:50,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:05:50,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:05:50,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:05:50,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:05:50,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:05:50,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b74391a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50, skipping insertion in model container [2020-07-29 02:05:50,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:05:50,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:05:50,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:05:50,428 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:05:50,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:05:50,464 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:05:50,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50 WrapperNode [2020-07-29 02:05:50,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:05:50,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:05:50,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:05:50,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:05:50,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:05:50,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:05:50,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:05:50,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:05:50,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... [2020-07-29 02:05:50,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:05:50,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:05:50,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:05:50,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:05:50,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:05:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:05:50,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:05:50,904 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-29 02:05:50,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:50 BoogieIcfgContainer [2020-07-29 02:05:50,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:05:50,908 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:05:50,909 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:05:50,912 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:05:50,913 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:50,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:05:50" (1/3) ... [2020-07-29 02:05:50,915 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@362c0014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:05:50, skipping insertion in model container [2020-07-29 02:05:50,915 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:50,916 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:50" (2/3) ... [2020-07-29 02:05:50,916 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@362c0014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:05:50, skipping insertion in model container [2020-07-29 02:05:50,916 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:50,916 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:50" (3/3) ... [2020-07-29 02:05:50,918 INFO L371 chiAutomizerObserver]: Analyzing ICFG sum04-1.i [2020-07-29 02:05:50,992 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:05:50,992 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:05:50,993 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:05:50,993 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:05:50,994 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:05:50,994 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:05:50,995 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:05:50,995 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:05:51,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-07-29 02:05:51,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:51,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:51,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:51,064 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 02:05:51,064 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 02:05:51,065 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:05:51,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-07-29 02:05:51,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:51,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:51,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:51,070 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 02:05:51,070 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 02:05:51,080 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~post0, main_~i~0, main_~sn~0;havoc main_~i~0;main_~sn~0 := 0;main_~i~0 := 1; 3#L13-3true [2020-07-29 02:05:51,080 INFO L796 eck$LassoCheckResult]: Loop: 3#L13-3true assume !!(main_~i~0 <= 8); 10#L14true assume main_~i~0 < 4;main_~sn~0 := 2 + main_~sn~0; 6#L13-2true main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; 3#L13-3true [2020-07-29 02:05:51,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:51,088 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-07-29 02:05:51,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:51,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187374742] [2020-07-29 02:05:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:51,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:51,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:51,222 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash 38828, now seen corresponding path program 1 times [2020-07-29 02:05:51,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:51,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356417010] [2020-07-29 02:05:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:51,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:51,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:51,246 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash 962349, now seen corresponding path program 1 times [2020-07-29 02:05:51,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:51,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009148780] [2020-07-29 02:05:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:51,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:51,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:51,270 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:51,383 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:05:51,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:05:51,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:05:51,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:05:51,384 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 02:05:51,384 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:51,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:05:51,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:05:51,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum04-1.i_Iteration1_Loop [2020-07-29 02:05:51,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:05:51,385 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:05:51,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:51,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:51,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:51,590 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:05:51,591 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:51,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:05:51,601 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:05:51,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 02:05:51,652 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:51,676 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 02:05:51,677 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~sn~0=0} Honda state: {ULTIMATE.start_main_~sn~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~sn~0=5}, {ULTIMATE.start_main_~sn~0=-4}, {ULTIMATE.start_main_~sn~0=1}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:05:51,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:05:51,717 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:05:51,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 02:05:51,762 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:51,806 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 02:05:51,808 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:05:51,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:05:51,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:05:51,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:05:51,809 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 02:05:51,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:51,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:05:51,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:05:51,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum04-1.i_Iteration1_Loop [2020-07-29 02:05:51,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:05:51,810 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:05:51,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:51,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:51,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:51,943 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:05:51,949 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:05:51,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 02:05:51,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:05:51,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:05:51,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:05:51,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:05:51,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:05:51,963 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:05:51,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:51,968 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:52,002 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 02:05:52,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:05:52,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:05:52,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:05:52,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:05:52,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:05:52,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:05:52,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 02:05:52,009 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 02:05:52,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-29 02:05:52,020 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:52,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 02:05:52,032 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 02:05:52,032 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 02:05:52,033 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 7 Supporting invariants [] [2020-07-29 02:05:52,066 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 02:05:52,071 INFO L393 LassoCheck]: Loop: "assume !!(main_~i~0 <= 8);" "assume main_~i~0 < 4;main_~sn~0 := 2 + main_~sn~0;" "main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0;" [2020-07-29 02:05:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:52,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 02:05:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:52,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:05:52,147 INFO L280 TraceCheckUtils]: 0: Hoare triple {20#unseeded} havoc main_#res;havoc main_#t~post0, main_~i~0, main_~sn~0;havoc main_~i~0;main_~sn~0 := 0;main_~i~0 := 1; {20#unseeded} is VALID [2020-07-29 02:05:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:52,157 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 02:05:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:52,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:05:52,194 INFO L280 TraceCheckUtils]: 0: Hoare triple {23#(>= oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 7))} assume !!(main_~i~0 <= 8); {23#(>= oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 7))} is VALID [2020-07-29 02:05:52,196 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#(>= oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 7))} assume main_~i~0 < 4;main_~sn~0 := 2 + main_~sn~0; {41#(and (<= 7 (+ oldRank0 (* 2 ULTIMATE.start_main_~i~0))) (< ULTIMATE.start_main_~i~0 4))} is VALID [2020-07-29 02:05:52,198 INFO L280 TraceCheckUtils]: 2: Hoare triple {41#(and (<= 7 (+ oldRank0 (* 2 ULTIMATE.start_main_~i~0))) (< ULTIMATE.start_main_~i~0 4))} main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {33#(or (and (>= oldRank0 0) (> oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 7))) unseeded)} is VALID [2020-07-29 02:05:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:05:52,210 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 02:05:52,229 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:05:52,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,239 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-29 02:05:52,241 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2020-07-29 02:05:52,372 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 31 states and 43 transitions. Complement of second has 7 states. [2020-07-29 02:05:52,373 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 [2020-07-29 02:05:52,373 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:05:52,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-07-29 02:05:52,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:52,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:52,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:52,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-29 02:05:52,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-29 02:05:52,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:52,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:52,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 43 transitions. [2020-07-29 02:05:52,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:52,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:52,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:52,389 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 10 states. [2020-07-29 02:05:52,391 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:52,392 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 02:05:52,393 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 4 states. [2020-07-29 02:05:52,398 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-29 02:05:52,400 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 2 examples of accepted words. [2020-07-29 02:05:52,401 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 31 states and 43 transitions. cyclomatic complexity: 14 [2020-07-29 02:05:52,402 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 02:05:52,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 31 letters. Loop has 31 letters. [2020-07-29 02:05:52,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 31 letters. Loop has 31 letters. [2020-07-29 02:05:52,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 31 letters. Loop has 31 letters. [2020-07-29 02:05:52,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:05:52,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:05:52,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:05:52,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 5 letters. Loop has 5 letters. [2020-07-29 02:05:52,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 5 letters. [2020-07-29 02:05:52,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 5 letters. Loop has 5 letters. [2020-07-29 02:05:52,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:52,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:52,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:52,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 02:05:52,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 02:05:52,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 2 letters. Loop has 1 letters. [2020-07-29 02:05:52,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:05:52,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:05:52,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:05:52,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:52,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:05:52,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:05:52,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 31 states and 43 transitions. cyclomatic complexity: 14 Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:05:52,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,459 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:05:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 02:05:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-07-29 02:05:52,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:52,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:05:52,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-29 02:05:52,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:52,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. cyclomatic complexity: 14 [2020-07-29 02:05:52,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:52,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 11 states and 14 transitions. [2020-07-29 02:05:52,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-29 02:05:52,492 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-29 02:05:52,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2020-07-29 02:05:52,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-29 02:05:52,493 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-07-29 02:05:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2020-07-29 02:05:52,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-07-29 02:05:52,525 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:05:52,526 INFO L82 GeneralOperation]: Start isEquivalent. First operand 11 states and 14 transitions. Second operand 10 states. [2020-07-29 02:05:52,526 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states and 14 transitions. Second operand 10 states. [2020-07-29 02:05:52,529 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 10 states. [2020-07-29 02:05:52,533 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 02:05:52,540 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2020-07-29 02:05:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2020-07-29 02:05:52,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:05:52,543 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:05:52,543 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 11 states and 14 transitions. [2020-07-29 02:05:52,546 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 11 states and 14 transitions. [2020-07-29 02:05:52,547 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 02:05:52,550 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2020-07-29 02:05:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2020-07-29 02:05:52,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:05:52,551 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:05:52,551 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:05:52,552 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:05:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-29 02:05:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-07-29 02:05:52,566 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-07-29 02:05:52,567 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-07-29 02:05:52,567 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:05:52,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-07-29 02:05:52,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:52,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:52,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:52,570 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:05:52,571 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 02:05:52,571 INFO L794 eck$LassoCheckResult]: Stem: 90#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post0, main_~i~0, main_~sn~0;havoc main_~i~0;main_~sn~0 := 0;main_~i~0 := 1; 91#L13-3 assume !!(main_~i~0 <= 8); 87#L14 [2020-07-29 02:05:52,571 INFO L796 eck$LassoCheckResult]: Loop: 87#L14 assume !(main_~i~0 < 4); 92#L13-2 main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; 86#L13-3 assume !!(main_~i~0 <= 8); 87#L14 [2020-07-29 02:05:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:52,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1001, now seen corresponding path program 1 times [2020-07-29 02:05:52,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:52,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038366887] [2020-07-29 02:05:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:52,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:52,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:52,587 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:52,588 INFO L82 PathProgramCache]: Analyzing trace with hash 43750, now seen corresponding path program 1 times [2020-07-29 02:05:52,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:52,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329964904] [2020-07-29 02:05:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:52,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:52,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:52,608 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash 29834750, now seen corresponding path program 1 times [2020-07-29 02:05:52,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:52,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015762129] [2020-07-29 02:05:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:52,649 INFO L280 TraceCheckUtils]: 0: Hoare triple {149#true} havoc main_#res;havoc main_#t~post0, main_~i~0, main_~sn~0;havoc main_~i~0;main_~sn~0 := 0;main_~i~0 := 1; {151#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-29 02:05:52,650 INFO L280 TraceCheckUtils]: 1: Hoare triple {151#(<= ULTIMATE.start_main_~i~0 1)} assume !!(main_~i~0 <= 8); {151#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-29 02:05:52,651 INFO L280 TraceCheckUtils]: 2: Hoare triple {151#(<= ULTIMATE.start_main_~i~0 1)} assume !(main_~i~0 < 4); {150#false} is VALID [2020-07-29 02:05:52,652 INFO L280 TraceCheckUtils]: 3: Hoare triple {150#false} main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {150#false} is VALID [2020-07-29 02:05:52,652 INFO L280 TraceCheckUtils]: 4: Hoare triple {150#false} assume !!(main_~i~0 <= 8); {150#false} is VALID [2020-07-29 02:05:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:05:52,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015762129] [2020-07-29 02:05:52,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:05:52,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 02:05:52,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702515351] [2020-07-29 02:05:52,680 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:05:52,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:05:52,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:05:52,681 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:05:52,681 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 02:05:52,681 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:52,681 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:05:52,681 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:05:52,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum04-1.i_Iteration2_Loop [2020-07-29 02:05:52,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:05:52,682 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:05:52,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:52,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:52,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:05:52,765 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:05:52,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:05:52,770 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:05:52,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 02:05:52,832 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:52,880 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 02:05:52,883 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:05:52,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:05:52,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:05:52,884 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:05:52,884 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 02:05:52,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:52,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:05:52,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:05:52,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum04-1.i_Iteration2_Loop [2020-07-29 02:05:52,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:05:52,885 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:05:52,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:52,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:05:52,982 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:05:52,983 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:05:52,994 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:05:52,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:05:52,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:05:52,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:05:52,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:05:52,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:05:52,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:05:53,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 02:05:53,005 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 02:05:53,008 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-29 02:05:53,009 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 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 [2020-07-29 02:05:53,011 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 02:05:53,012 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 02:05:53,012 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 02:05:53,012 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 15 Supporting invariants [] [2020-07-29 02:05:53,041 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 02:05:53,047 INFO L393 LassoCheck]: Loop: "assume !(main_~i~0 < 4);" "main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0;" "assume !!(main_~i~0 <= 8);" [2020-07-29 02:05:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:53,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:53,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 02:05:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:53,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:05:53,078 INFO L280 TraceCheckUtils]: 0: Hoare triple {152#unseeded} havoc main_#res;havoc main_#t~post0, main_~i~0, main_~sn~0;havoc main_~i~0;main_~sn~0 := 0;main_~i~0 := 1; {152#unseeded} is VALID [2020-07-29 02:05:53,079 INFO L280 TraceCheckUtils]: 1: Hoare triple {152#unseeded} assume !!(main_~i~0 <= 8); {152#unseeded} is VALID [2020-07-29 02:05:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:53,084 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 02:05:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:53,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:05:53,179 INFO L280 TraceCheckUtils]: 0: Hoare triple {155#(>= oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 15))} assume !(main_~i~0 < 4); {155#(>= oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 15))} is VALID [2020-07-29 02:05:53,180 INFO L280 TraceCheckUtils]: 1: Hoare triple {155#(>= oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 15))} main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {176#(<= (+ (div (+ oldRank0 (- 15)) (- 2)) 1) ULTIMATE.start_main_~i~0)} is VALID [2020-07-29 02:05:53,182 INFO L280 TraceCheckUtils]: 2: Hoare triple {176#(<= (+ (div (+ oldRank0 (- 15)) (- 2)) 1) ULTIMATE.start_main_~i~0)} assume !!(main_~i~0 <= 8); {165#(or (and (> oldRank0 (+ (* (- 2) ULTIMATE.start_main_~i~0) 15)) (>= oldRank0 0)) unseeded)} is VALID [2020-07-29 02:05:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:05:53,182 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 02:05:53,193 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:05:53,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,193 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-29 02:05:53,194 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-07-29 02:05:53,246 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 17 states and 21 transitions. Complement of second has 6 states. [2020-07-29 02:05:53,247 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 [2020-07-29 02:05:53,247 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:05:53,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 02:05:53,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:53,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:53,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-29 02:05:53,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:53,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:53,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:53,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2020-07-29 02:05:53,249 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:53,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:05:53,250 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 02:05:53,250 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 02:05:53,250 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 4 states. [2020-07-29 02:05:53,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:05:53,252 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2020-07-29 02:05:53,252 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 17 states and 21 transitions. cyclomatic complexity: 6 [2020-07-29 02:05:53,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. cyclomatic complexity: 6 [2020-07-29 02:05:53,252 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:05:53,252 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 0 examples of accepted words. [2020-07-29 02:05:53,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:53,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:53,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:53,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 17 letters. Loop has 17 letters. [2020-07-29 02:05:53,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 17 letters. Loop has 17 letters. [2020-07-29 02:05:53,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 17 letters. Loop has 17 letters. [2020-07-29 02:05:53,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:05:53,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:05:53,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:05:53,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:05:53,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:05:53,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:05:53,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:05:53,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:05:53,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:05:53,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:53,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:53,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:05:53,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:53,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:53,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 21 transitions. cyclomatic complexity: 6 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:05:53,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,263 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:05:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 02:05:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-07-29 02:05:53,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-29 02:05:53,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:05:53,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-29 02:05:53,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:05:53,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. cyclomatic complexity: 6 [2020-07-29 02:05:53,268 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:53,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-07-29 02:05:53,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 02:05:53,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 02:05:53,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 02:05:53,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:05:53,269 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:53,269 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:53,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:05:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 02:05:53,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 02:05:53,273 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-07-29 02:05:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:05:53,273 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-29 02:05:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-29 02:05:53,273 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 02:05:53,282 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:05:53,283 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-29 02:05:53,283 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:53,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-29 02:05:53,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 02:05:53,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 02:05:53,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 02:05:53,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:05:53,284 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:53,284 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:53,284 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:53,284 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-29 02:05:53,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 02:05:53,285 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:53,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:05:53,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:05:53 BoogieIcfgContainer [2020-07-29 02:05:53,293 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:05:53,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:05:53,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:05:53,294 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:05:53,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:50" (3/4) ... [2020-07-29 02:05:53,299 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 02:05:53,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:05:53,303 INFO L168 Benchmark]: Toolchain (without parser) took 3115.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 954.9 MB in the beginning and 907.7 MB in the end (delta: 47.1 MB). Peak memory consumption was 196.0 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:53,304 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:05:53,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.89 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:53,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.68 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:05:53,307 INFO L168 Benchmark]: Boogie Preprocessor took 103.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:53,308 INFO L168 Benchmark]: RCFGBuilder took 295.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:53,308 INFO L168 Benchmark]: BuchiAutomizer took 2385.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.7 MB in the end (delta: 218.0 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:53,309 INFO L168 Benchmark]: Witness Printer took 5.82 ms. Allocated memory is still 1.2 GB. Free memory is still 907.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:05:53,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.89 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.68 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 103.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 295.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2385.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.7 MB in the end (delta: 218.0 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.82 ms. Allocated memory is still 1.2 GB. Free memory is still 907.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 7 and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 15 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 13 SDslu, 10 SDs, 0 SdLazy, 23 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf96 lsp83 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...