./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2291f924dd9adb1923bbd2b3119647838e71c665 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:29:21,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:29:21,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:29:21,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:29:21,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:29:21,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:29:21,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:29:21,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:29:21,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:29:21,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:29:21,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:29:21,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:29:21,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:29:21,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:29:21,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:29:21,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:29:21,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:29:21,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:29:21,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:29:21,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:29:21,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:29:21,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:29:21,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:29:21,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:29:21,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:29:21,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:29:21,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:29:21,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:29:21,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:29:21,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:29:21,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:29:21,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:29:21,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:29:21,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:29:21,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:29:21,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:29:21,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:29:21,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:29:21,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:29:21,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:29:21,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:29:21,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:29:21,161 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:29:21,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:29:21,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:29:21,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:29:21,163 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:29:21,163 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:29:21,164 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:29:21,164 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:29:21,164 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:29:21,164 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:29:21,165 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:29:21,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:29:21,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:29:21,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:29:21,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:29:21,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:29:21,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:29:21,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:29:21,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:29:21,167 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:29:21,167 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:29:21,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:29:21,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:29:21,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:29:21,169 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:29:21,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:29:21,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:29:21,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:29:21,170 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:29:21,171 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:29:21,171 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2291f924dd9adb1923bbd2b3119647838e71c665 [2019-11-28 20:29:21,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:29:21,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:29:21,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:29:21,479 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:29:21,479 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:29:21,480 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2019-11-28 20:29:21,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5e574b2/d5db74bd18a94501b63b55ef5c5d6e00/FLAG01a78edac [2019-11-28 20:29:21,989 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:29:21,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2019-11-28 20:29:21,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5e574b2/d5db74bd18a94501b63b55ef5c5d6e00/FLAG01a78edac [2019-11-28 20:29:22,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5e574b2/d5db74bd18a94501b63b55ef5c5d6e00 [2019-11-28 20:29:22,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:29:22,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:29:22,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:29:22,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:29:22,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:29:22,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388be10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22, skipping insertion in model container [2019-11-28 20:29:22,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:29:22,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:29:22,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:29:22,640 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:29:22,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:29:22,664 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:29:22,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22 WrapperNode [2019-11-28 20:29:22,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:29:22,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:29:22,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:29:22,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:29:22,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:29:22,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:29:22,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:29:22,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:29:22,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... [2019-11-28 20:29:22,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:29:22,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:29:22,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:29:22,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:29:22,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:29:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:29:22,965 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:29:22,965 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:29:22,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:29:22 BoogieIcfgContainer [2019-11-28 20:29:22,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:29:22,967 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:29:22,967 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:29:22,969 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:29:22,970 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:29:22,970 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:29:22" (1/3) ... [2019-11-28 20:29:22,971 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1829a06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:29:22, skipping insertion in model container [2019-11-28 20:29:22,971 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:29:22,971 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:22" (2/3) ... [2019-11-28 20:29:22,972 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1829a06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:29:22, skipping insertion in model container [2019-11-28 20:29:22,972 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:29:22,972 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:29:22" (3/3) ... [2019-11-28 20:29:22,973 INFO L371 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2019-11-28 20:29:23,022 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:29:23,022 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:29:23,022 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:29:23,023 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:29:23,023 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:29:23,023 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:29:23,023 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:29:23,023 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:29:23,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:29:23,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:29:23,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:23,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:23,076 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:29:23,077 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:23,077 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:29:23,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:29:23,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:29:23,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:23,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:23,079 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:29:23,079 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:23,090 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L20true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 3#L21true assume !!(main_~z~0 <= 1073741823); 7#L24-2true [2019-11-28 20:29:23,091 INFO L796 eck$LassoCheckResult]: Loop: 7#L24-2true assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 9#L24true assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 7#L24-2true [2019-11-28 20:29:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:23,099 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2019-11-28 20:29:23,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:23,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739125391] [2019-11-28 20:29:23,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:23,218 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 1 times [2019-11-28 20:29:23,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:23,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066640781] [2019-11-28 20:29:23,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:23,234 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:23,235 INFO L82 PathProgramCache]: Analyzing trace with hash 29742639, now seen corresponding path program 1 times [2019-11-28 20:29:23,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:23,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019809775] [2019-11-28 20:29:23,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:23,251 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:23,316 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:23,317 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:23,317 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:23,317 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:23,317 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:23,318 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:23,318 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:23,318 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:23,318 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2019-11-28 20:29:23,318 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:23,318 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:23,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:23,461 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:23,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:23,473 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:23,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:23,483 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:23,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:23,491 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 [2019-11-28 20:29:23,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:23,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:23,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:23,503 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) [2019-11-28 20:29:23,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:23,515 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 [2019-11-28 20:29:23,524 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:23,526 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:23,526 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:23,526 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:23,527 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:23,527 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:23,527 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:23,528 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:23,528 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:23,528 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2019-11-28 20:29:23,529 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:23,529 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:23,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:23,635 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:23,644 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:23,655 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:29:23,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:23,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:23,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:23,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:23,665 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:23,665 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:29:23,671 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) [2019-11-28 20:29:23,679 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:29:23,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:23,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:23,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:23,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:23,685 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:23,685 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:23,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:23,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:29:23,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:23,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:23,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:23,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:23,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:23,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:23,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:29:23,723 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:23,727 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:29:23,727 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:23,735 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:23,735 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:23,736 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:23,736 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:23,753 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:29:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:23,795 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:23,796 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:23,813 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:23,813 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:29:23,845 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 [2019-11-28 20:29:23,847 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-28 20:29:23,908 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 8 states. [2019-11-28 20:29:23,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:29:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-11-28 20:29:23,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:29:23,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:23,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:29:23,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:23,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-28 20:29:23,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:23,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2019-11-28 20:29:23,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:29:23,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 13 transitions. [2019-11-28 20:29:23,937 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 20:29:23,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 20:29:23,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-28 20:29:23,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:29:23,939 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:29:23,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-28 20:29:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 20:29:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 20:29:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-28 20:29:23,970 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:29:23,970 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:29:23,970 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:29:23,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-28 20:29:23,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:29:23,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:23,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:23,973 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 20:29:23,973 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:29:23,974 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 85#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 82#L21 assume !!(main_~z~0 <= 1073741823); 83#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 91#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2019-11-28 20:29:23,974 INFO L796 eck$LassoCheckResult]: Loop: 86#L27 assume !!(main_~z~0 <= 1073741823); 87#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 88#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2019-11-28 20:29:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:23,975 INFO L82 PathProgramCache]: Analyzing trace with hash 29742632, now seen corresponding path program 1 times [2019-11-28 20:29:23,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:23,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181130812] [2019-11-28 20:29:23,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,008 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash 57342, now seen corresponding path program 1 times [2019-11-28 20:29:24,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:24,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227850599] [2019-11-28 20:29:24,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,018 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:24,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:24,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514487, now seen corresponding path program 1 times [2019-11-28 20:29:24,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:24,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881350377] [2019-11-28 20:29:24,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,041 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:24,072 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:24,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:24,072 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:24,072 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:24,073 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:24,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:24,073 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:24,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2019-11-28 20:29:24,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:24,073 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:24,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:24,164 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:24,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:29:24,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:24,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:24,201 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:24,206 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:24,221 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,229 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:24,229 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=389769356, ULTIMATE.start_main_~z~0=389769356} Honda state: {ULTIMATE.start_main_#t~nondet2=389769356, ULTIMATE.start_main_~z~0=389769356} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:24,243 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:24,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:29:24,297 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:24,298 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:24,298 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:24,299 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:24,299 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:24,299 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:24,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:24,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:24,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2019-11-28 20:29:24,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:24,300 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:24,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,404 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:24,405 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,418 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:29:24,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:24,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:24,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:24,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:24,431 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:24,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,446 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:24,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:24,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:24,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:24,457 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:24,457 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:29:24,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:29:24,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:24,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:24,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:24,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:24,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:24,495 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:24,495 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:29:24,498 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:29:24,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:24,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:24,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:24,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:24,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:24,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:24,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,522 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:24,526 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:29:24,526 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:24,543 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:24,543 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:24,543 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 20:29:24,545 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:24,587 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:24,588 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:24,597 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:24,598 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:29:24,626 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 [2019-11-28 20:29:24,626 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-28 20:29:24,657 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 15 states and 20 transitions. Complement of second has 6 states. [2019-11-28 20:29:24,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:29:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:29:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-28 20:29:24,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-28 20:29:24,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:24,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-28 20:29:24,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:24,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-28 20:29:24,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:24,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2019-11-28 20:29:24,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:24,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 20 transitions. [2019-11-28 20:29:24,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 20:29:24,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-28 20:29:24,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2019-11-28 20:29:24,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:29:24,670 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-28 20:29:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2019-11-28 20:29:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2019-11-28 20:29:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 20:29:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2019-11-28 20:29:24,674 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-28 20:29:24,674 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-28 20:29:24,675 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:29:24,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2019-11-28 20:29:24,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:24,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:24,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:24,678 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:29:24,678 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:24,678 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 154#L21 assume !!(main_~z~0 <= 1073741823); 155#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 163#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L27 assume !!(main_~z~0 <= 1073741823); 160#L24-2 [2019-11-28 20:29:24,679 INFO L796 eck$LassoCheckResult]: Loop: 160#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 165#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 160#L24-2 [2019-11-28 20:29:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash 922021620, now seen corresponding path program 2 times [2019-11-28 20:29:24,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:24,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4771357] [2019-11-28 20:29:24,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,710 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 2 times [2019-11-28 20:29:24,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:24,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007184069] [2019-11-28 20:29:24,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514494, now seen corresponding path program 1 times [2019-11-28 20:29:24,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:24,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100696362] [2019-11-28 20:29:24,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:24,759 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:24,778 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:24,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:24,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:24,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:24,778 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:24,779 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,779 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:24,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:24,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2019-11-28 20:29:24,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:24,780 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:24,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,853 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:24,853 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:24,868 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:24,888 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,898 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:24,903 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:24,903 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:24,903 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:24,903 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:24,903 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:24,904 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:24,904 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:24,904 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:24,904 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2019-11-28 20:29:24,904 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:24,904 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:24,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:24,988 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:24,989 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:24,994 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 [2019-11-28 20:29:24,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:24,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:24,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:24,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:24,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:24,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:24,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,002 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:25,004 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:29:25,005 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,010 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:25,010 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:25,010 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:25,010 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-28 20:29:25,013 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:29:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,038 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,038 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,048 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,048 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:29:25,058 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 [2019-11-28 20:29:25,058 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:29:25,071 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 20 states and 27 transitions. Complement of second has 5 states. [2019-11-28 20:29:25,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:29:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 20:29:25,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 20:29:25,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-28 20:29:25,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-28 20:29:25,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2019-11-28 20:29:25,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:25,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 21 transitions. [2019-11-28 20:29:25,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 20:29:25,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 20:29:25,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2019-11-28 20:29:25,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:29:25,076 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-28 20:29:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2019-11-28 20:29:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 20:29:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 20:29:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2019-11-28 20:29:25,078 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-28 20:29:25,078 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-28 20:29:25,078 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:29:25,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2019-11-28 20:29:25,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:25,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:25,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:25,080 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2019-11-28 20:29:25,080 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:25,080 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 235#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 232#L21 assume !!(main_~z~0 <= 1073741823); 233#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 242#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 236#L27 assume !!(main_~z~0 <= 1073741823); 237#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 246#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 238#L27 assume !!(main_~z~0 <= 1073741823); 239#L24-2 [2019-11-28 20:29:25,080 INFO L796 eck$LassoCheckResult]: Loop: 239#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 244#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 239#L24-2 [2019-11-28 20:29:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1630243461, now seen corresponding path program 3 times [2019-11-28 20:29:25,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:25,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656327409] [2019-11-28 20:29:25,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:25,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:25,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 3 times [2019-11-28 20:29:25,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:25,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635788377] [2019-11-28 20:29:25,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:25,115 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:25,116 INFO L82 PathProgramCache]: Analyzing trace with hash -999096369, now seen corresponding path program 2 times [2019-11-28 20:29:25,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:25,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669893656] [2019-11-28 20:29:25,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:25,150 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:25,175 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:25,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:25,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:25,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:25,176 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:25,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:25,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:25,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2019-11-28 20:29:25,177 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:25,177 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:25,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,257 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:25,260 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:25,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:25,278 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,282 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:25,282 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:25,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:25,309 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:25,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:25,334 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:25,345 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:25,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:25,346 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:25,346 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:25,346 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:25,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,346 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:25,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:25,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2019-11-28 20:29:25,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:25,348 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:25,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:25,418 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:25,418 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:25,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:29:25,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:25,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:25,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:25,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:25,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:25,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:25,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,472 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:25,480 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:29:25,481 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:25,486 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:25,486 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:25,486 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:25,486 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-28 20:29:25,498 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,525 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,526 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,536 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,537 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:29:25,549 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 [2019-11-28 20:29:25,549 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 20:29:25,563 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2019-11-28 20:29:25,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:29:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 20:29:25,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-28 20:29:25,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,565 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:29:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,586 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,586 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,593 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,594 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:29:25,617 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:29:25,617 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 20:29:25,635 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2019-11-28 20:29:25,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:29:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 20:29:25,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-28 20:29:25,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,636 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:29:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,660 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,661 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:25,667 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:25,667 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:29:25,677 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:29:25,677 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 20:29:25,688 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 4 states. [2019-11-28 20:29:25,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:29:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-28 20:29:25,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-28 20:29:25,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2019-11-28 20:29:25,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-28 20:29:25,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:25,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-11-28 20:29:25,692 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:29:25,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-11-28 20:29:25,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:29:25,692 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:29:25,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:29:25,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:29:25,692 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:29:25,692 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:29:25,693 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:29:25,693 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:29:25,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:29:25,693 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:29:25,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:29:25,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:29:25 BoogieIcfgContainer [2019-11-28 20:29:25,701 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:29:25,701 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:29:25,702 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:29:25,702 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:29:25,702 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:29:22" (3/4) ... [2019-11-28 20:29:25,706 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:29:25,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:29:25,709 INFO L168 Benchmark]: Toolchain (without parser) took 3288.82 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.8 MB). Free memory was 957.7 MB in the beginning and 1.2 GB in the end (delta: -204.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:25,710 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:29:25,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.54 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:25,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:25,712 INFO L168 Benchmark]: Boogie Preprocessor took 19.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:29:25,712 INFO L168 Benchmark]: RCFGBuilder took 198.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:25,713 INFO L168 Benchmark]: BuchiAutomizer took 2734.52 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -41.0 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:25,714 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:29:25,717 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 243.54 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 82.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 198.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2734.52 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -41.0 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.90 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * z + 1 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 8 SDs, 0 SdLazy, 34 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...