./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.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 fce4ad715fa5546a587c43eb09d1a8cb5dcde607 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:28:54,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:28:54,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:28:54,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:28:54,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:28:54,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:28:54,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:28:54,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:28:54,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:28:54,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:28:54,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:28:54,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:28:54,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:28:54,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:28:54,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:28:54,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:28:54,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:28:54,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:28:54,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:28:54,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:28:54,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:28:54,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:28:54,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:28:54,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:28:54,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:28:54,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:28:54,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:28:54,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:28:54,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:28:54,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:28:54,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:28:54,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:28:54,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:28:54,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:28:54,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:28:54,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:28:54,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:28:54,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:28:54,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:28:54,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:28:54,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:28:54,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-07-29 01:28:54,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:28:54,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:28:54,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:28:54,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:28:54,147 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:28:54,148 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 01:28:54,148 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 01:28:54,148 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 01:28:54,148 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 01:28:54,150 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 01:28:54,151 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 01:28:54,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:28:54,151 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:28:54,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:28:54,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:28:54,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 01:28:54,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 01:28:54,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 01:28:54,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:28:54,154 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 01:28:54,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:28:54,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 01:28:54,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:28:54,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:28:54,156 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 01:28:54,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:28:54,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:28:54,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:28:54,158 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 01:28:54,159 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 01:28:54,160 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 -> fce4ad715fa5546a587c43eb09d1a8cb5dcde607 [2020-07-29 01:28:54,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:28:54,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:28:54,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:28:54,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:28:54,526 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:28:54,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2020-07-29 01:28:54,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f57c1371/a00cec9490824013a254d0cc0e26a99c/FLAG344908113 [2020-07-29 01:28:55,059 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:28:55,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2020-07-29 01:28:55,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f57c1371/a00cec9490824013a254d0cc0e26a99c/FLAG344908113 [2020-07-29 01:28:55,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f57c1371/a00cec9490824013a254d0cc0e26a99c [2020-07-29 01:28:55,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:28:55,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:28:55,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:28:55,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:28:55,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:28:55,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb7646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55, skipping insertion in model container [2020-07-29 01:28:55,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:28:55,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:28:55,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:28:55,732 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:28:55,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:28:55,775 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:28:55,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55 WrapperNode [2020-07-29 01:28:55,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:28:55,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:28:55,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:28:55,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:28:55,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:28:55,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:28:55,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:28:55,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:28:55,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... [2020-07-29 01:28:55,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:28:55,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:28:55,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:28:55,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:28:55,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:28:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:28:56,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:28:56,248 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 01:28:56,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:28:56 BoogieIcfgContainer [2020-07-29 01:28:56,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:28:56,252 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 01:28:56,253 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 01:28:56,257 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 01:28:56,258 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:28:56,258 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 01:28:55" (1/3) ... [2020-07-29 01:28:56,259 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1b0f737c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:28:56, skipping insertion in model container [2020-07-29 01:28:56,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:28:56,260 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:55" (2/3) ... [2020-07-29 01:28:56,260 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1b0f737c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:28:56, skipping insertion in model container [2020-07-29 01:28:56,261 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:28:56,261 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:28:56" (3/3) ... [2020-07-29 01:28:56,263 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2020-07-29 01:28:56,321 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 01:28:56,321 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 01:28:56,322 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 01:28:56,322 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:28:56,323 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:28:56,323 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 01:28:56,324 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:28:56,324 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 01:28:56,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-07-29 01:28:56,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:56,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:56,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:56,439 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 01:28:56,439 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 01:28:56,439 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 01:28:56,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-07-29 01:28:56,442 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:56,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:56,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:56,443 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 01:28:56,444 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 01:28:56,452 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L21-2true [2020-07-29 01:28:56,453 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 8#L18true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; 9#L21-2true [2020-07-29 01:28:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:56,460 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-07-29 01:28:56,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:56,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853251873] [2020-07-29 01:28:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:56,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:56,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:56,572 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:56,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-07-29 01:28:56,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:56,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120433063] [2020-07-29 01:28:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:56,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:56,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:56,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:56,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:56,597 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-07-29 01:28:56,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:56,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292549240] [2020-07-29 01:28:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:56,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:56,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:56,614 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:56,717 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:28:56,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:28:56,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:28:56,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:28:56,719 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:28:56,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:56,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:28:56,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:28:56,719 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2020-07-29 01:28:56,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:28:56,720 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:28:56,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:56,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:56,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:56,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:28:56,945 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:56,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:28:56,953 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:56,963 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:28:56,964 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:56,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:28:56,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:28:57,004 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:28:57,004 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:57,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:28:57,042 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:57,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:28:57,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:28:57,118 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 01:28:57,120 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:28:57,120 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:28:57,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:28:57,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:28:57,121 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 01:28:57,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:57,121 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:28:57,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:28:57,122 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2020-07-29 01:28:57,122 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:28:57,122 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:28:57,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:57,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:57,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:57,283 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:28:57,288 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:57,293 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 01:28:57,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:28:57,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:28:57,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:28:57,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:28:57,303 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:28:57,304 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:57,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:57,351 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 01:28:57,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:28:57,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:28:57,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:28:57,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:28:57,359 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:28:57,359 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:57,365 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:57,414 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 01:28:57,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:28:57,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:28:57,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:28:57,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:28:57,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:28:57,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:28:57,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:57,425 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 01:28:57,435 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-29 01:28:57,435 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:57,449 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 01:28:57,450 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 01:28:57,450 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 01:28:57,451 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:57,493 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 01:28:57,499 INFO L393 LassoCheck]: Loop: "assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0);" "assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;" [2020-07-29 01:28:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:57,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 01:28:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:57,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:28:57,553 INFO L280 TraceCheckUtils]: 0: Hoare triple {18#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; {18#unseeded} is VALID [2020-07-29 01:28:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:57,558 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 01:28:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:57,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:28:57,597 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#(>= oldRank0 ULTIMATE.start_main_~q~0)} assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); {36#(and (< 0 ULTIMATE.start_main_~q~0) (<= ULTIMATE.start_main_~q~0 oldRank0))} is VALID [2020-07-29 01:28:57,598 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#(and (< 0 ULTIMATE.start_main_~q~0) (<= ULTIMATE.start_main_~q~0 oldRank0))} assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; {31#(or (and (>= oldRank0 0) (> oldRank0 ULTIMATE.start_main_~q~0)) unseeded)} is VALID [2020-07-29 01:28:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:28:57,611 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:28:57,623 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:28:57,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,637 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-29 01:28:57,639 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-07-29 01:28:57,770 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 30 states and 39 transitions. Complement of second has 7 states. [2020-07-29 01:28:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-29 01:28:57,770 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:28:57,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-07-29 01:28:57,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:57,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:57,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:57,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-29 01:28:57,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-29 01:28:57,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:57,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:57,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-07-29 01:28:57,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:57,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:57,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:57,782 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 8 states. [2020-07-29 01:28:57,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:57,784 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:28:57,784 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 3 states. [2020-07-29 01:28:57,786 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-29 01:28:57,787 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 2 examples of accepted words. [2020-07-29 01:28:57,787 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 30 states and 39 transitions. cyclomatic complexity: 11 [2020-07-29 01:28:57,788 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:28:57,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 30 letters. Loop has 30 letters. [2020-07-29 01:28:57,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 30 letters. Loop has 30 letters. [2020-07-29 01:28:57,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 30 letters. Loop has 30 letters. [2020-07-29 01:28:57,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 8 letters. Loop has 8 letters. [2020-07-29 01:28:57,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 8 letters. Loop has 8 letters. [2020-07-29 01:28:57,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 8 letters. Loop has 8 letters. [2020-07-29 01:28:57,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 5 letters. Loop has 5 letters. [2020-07-29 01:28:57,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 5 letters. Loop has 5 letters. [2020-07-29 01:28:57,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 5 letters. Loop has 5 letters. [2020-07-29 01:28:57,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:28:57,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:28:57,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 2 letters. Loop has 2 letters. [2020-07-29 01:28:57,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:28:57,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:28:57,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:28:57,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:57,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:57,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:57,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:28:57,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:28:57,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:28:57,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 39 transitions. cyclomatic complexity: 11 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:57,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,810 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:28:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:28:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2020-07-29 01:28:57,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:28:57,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-29 01:28:57,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-29 01:28:57,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:57,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. cyclomatic complexity: 11 [2020-07-29 01:28:57,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:57,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2020-07-29 01:28:57,829 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-29 01:28:57,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-29 01:28:57,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-07-29 01:28:57,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-29 01:28:57,830 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-29 01:28:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-07-29 01:28:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-29 01:28:57,863 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:28:57,864 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states and 15 transitions. Second operand 9 states. [2020-07-29 01:28:57,865 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states and 15 transitions. Second operand 9 states. [2020-07-29 01:28:57,868 INFO L87 Difference]: Start difference. First operand 10 states and 15 transitions. Second operand 9 states. [2020-07-29 01:28:57,872 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:28:57,876 INFO L93 Difference]: Finished difference Result 10 states and 15 transitions. [2020-07-29 01:28:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 15 transitions. [2020-07-29 01:28:57,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:28:57,877 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:28:57,878 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand 10 states and 15 transitions. [2020-07-29 01:28:57,878 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 10 states and 15 transitions. [2020-07-29 01:28:57,879 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:28:57,880 INFO L93 Difference]: Finished difference Result 11 states and 17 transitions. [2020-07-29 01:28:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 17 transitions. [2020-07-29 01:28:57,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:28:57,881 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:28:57,881 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:28:57,882 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:28:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-29 01:28:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-07-29 01:28:57,884 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-29 01:28:57,885 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-29 01:28:57,885 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 01:28:57,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-07-29 01:28:57,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:57,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:57,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:57,887 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 01:28:57,887 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:28:57,887 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 85#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 86#L18 [2020-07-29 01:28:57,888 INFO L796 eck$LassoCheckResult]: Loop: 86#L18 assume !(main_~q~0 < main_~p~0); 80#L21 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; 81#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 86#L18 [2020-07-29 01:28:57,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:57,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-07-29 01:28:57,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:57,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326722423] [2020-07-29 01:28:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:57,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:57,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:57,902 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-07-29 01:28:57,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:57,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181424315] [2020-07-29 01:28:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:57,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:57,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:57,920 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-07-29 01:28:57,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:57,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004765467] [2020-07-29 01:28:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:57,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:57,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:57,938 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:57,985 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:28:57,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:28:57,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:28:57,986 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:28:57,986 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:28:57,986 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:57,986 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:28:57,986 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:28:57,986 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2020-07-29 01:28:57,987 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:28:57,987 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:28:57,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:58,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:58,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:58,142 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:28:58,142 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) [2020-07-29 01:28:58,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:28:58,161 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:58,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:28:58,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:58,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:28:58,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:28:58,222 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 01:28:58,222 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: [] Waiting until toolchain timeout for monitored process 11 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:58,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:28:58,259 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:58,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:28:58,308 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:58,403 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 01:28:58,405 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:28:58,405 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:28:58,405 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:28:58,406 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:28:58,406 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 01:28:58,406 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:58,406 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:28:58,406 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:28:58,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2020-07-29 01:28:58,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:28:58,407 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:28:58,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:58,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:58,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:58,533 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:28:58,533 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:58,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 01:28:58,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:28:58,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:28:58,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:28:58,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:28:58,546 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:28:58,546 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-29 01:28:58,554 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:58,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 01:28:58,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:28:58,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:28:58,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:28:58,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:28:58,613 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-29 01:28:58,614 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:58,620 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) [2020-07-29 01:28:58,658 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 [2020-07-29 01:28:58,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:28:58,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:28:58,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:28:58,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:28:58,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:28:58,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:28:58,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 01:28:58,665 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 01:28:58,681 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-29 01:28:58,682 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:58,693 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 01:28:58,693 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 01:28:58,693 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 01:28:58,693 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2020-07-29 01:28:58,725 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 01:28:58,729 INFO L393 LassoCheck]: Loop: "assume !(main_~q~0 < main_~p~0);" "assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;" "assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0);" [2020-07-29 01:28:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:58,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 01:28:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:58,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:28:58,756 INFO L280 TraceCheckUtils]: 0: Hoare triple {140#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; {140#unseeded} is VALID [2020-07-29 01:28:58,757 INFO L280 TraceCheckUtils]: 1: Hoare triple {140#unseeded} assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); {140#unseeded} is VALID [2020-07-29 01:28:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:58,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 01:28:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:58,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:28:58,850 INFO L280 TraceCheckUtils]: 0: Hoare triple {143#(>= oldRank0 ULTIMATE.start_main_~p~0)} assume !(main_~q~0 < main_~p~0); {143#(>= oldRank0 ULTIMATE.start_main_~p~0)} is VALID [2020-07-29 01:28:58,852 INFO L280 TraceCheckUtils]: 1: Hoare triple {143#(>= oldRank0 ULTIMATE.start_main_~p~0)} assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; {164#(<= (+ ULTIMATE.start_main_~p~0 1) oldRank0)} is VALID [2020-07-29 01:28:58,854 INFO L280 TraceCheckUtils]: 2: Hoare triple {164#(<= (+ ULTIMATE.start_main_~p~0 1) oldRank0)} assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); {153#(or (and (> oldRank0 ULTIMATE.start_main_~p~0) (>= oldRank0 0)) unseeded)} is VALID [2020-07-29 01:28:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:28:58,854 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:28:58,863 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:28:58,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,865 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-29 01:28:58,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-07-29 01:28:58,929 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 25 states and 38 transitions. Complement of second has 6 states. [2020-07-29 01:28:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-29 01:28:58,930 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:28:58,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. cyclomatic complexity: 7 [2020-07-29 01:28:58,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:58,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:58,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-29 01:28:58,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:58,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:58,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:58,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2020-07-29 01:28:58,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:58,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:58,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:58,935 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 9 states and 14 transitions. cyclomatic complexity: 7 [2020-07-29 01:28:58,936 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:28:58,936 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 4 states. [2020-07-29 01:28:58,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:58,938 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2020-07-29 01:28:58,938 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 25 states and 38 transitions. cyclomatic complexity: 17 [2020-07-29 01:28:58,939 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 01:28:58,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 1 letters. Loop has 3 letters. [2020-07-29 01:28:58,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 01:28:58,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 1 letters. Loop has 3 letters. [2020-07-29 01:28:58,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 25 letters. Loop has 25 letters. [2020-07-29 01:28:58,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 25 letters. Loop has 25 letters. [2020-07-29 01:28:58,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 25 letters. Loop has 25 letters. [2020-07-29 01:28:58,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 9 letters. Loop has 9 letters. [2020-07-29 01:28:58,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 9 letters. Loop has 9 letters. [2020-07-29 01:28:58,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 9 letters. Loop has 9 letters. [2020-07-29 01:28:58,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:28:58,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:28:58,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:28:58,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:58,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:58,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 3 letters. Loop has 3 letters. [2020-07-29 01:28:58,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 1 letters. Loop has 3 letters. [2020-07-29 01:28:58,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 01:28:58,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 1 letters. Loop has 3 letters. [2020-07-29 01:28:58,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:28:58,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:28:58,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:28:58,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 14 transitions. cyclomatic complexity: 7 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 38 transitions. cyclomatic complexity: 17 Stem has 4 letters. Loop has 3 letters. [2020-07-29 01:28:58,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,961 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:28:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:28:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-29 01:28:58,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-29 01:28:58,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-29 01:28:58,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-29 01:28:58,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:58,964 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. cyclomatic complexity: 17 [2020-07-29 01:28:58,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:58,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2020-07-29 01:28:58,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-29 01:28:58,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-29 01:28:58,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2020-07-29 01:28:58,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-29 01:28:58,970 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2020-07-29 01:28:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2020-07-29 01:28:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-29 01:28:58,974 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:28:58,974 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states and 35 transitions. Second operand 22 states. [2020-07-29 01:28:58,974 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states and 35 transitions. Second operand 22 states. [2020-07-29 01:28:58,974 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand 22 states. [2020-07-29 01:28:58,975 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:28:58,978 INFO L93 Difference]: Finished difference Result 27 states and 44 transitions. [2020-07-29 01:28:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2020-07-29 01:28:58,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:28:58,979 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:28:58,979 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 23 states and 35 transitions. [2020-07-29 01:28:58,979 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 23 states and 35 transitions. [2020-07-29 01:28:58,980 INFO L149 Difference]: Subtrahend was not deterministic. Recomputing result with determinization. [2020-07-29 01:28:58,984 INFO L93 Difference]: Finished difference Result 30 states and 49 transitions. [2020-07-29 01:28:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-07-29 01:28:58,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:28:58,985 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:28:58,985 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:28:58,985 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:28:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-29 01:28:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2020-07-29 01:28:58,988 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2020-07-29 01:28:58,988 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2020-07-29 01:28:58,988 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-29 01:28:58,989 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2020-07-29 01:28:58,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 01:28:58,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:58,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:58,990 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 01:28:58,990 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 01:28:58,991 INFO L794 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 207#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 213#L18 assume !(main_~q~0 < main_~p~0); 202#L21 [2020-07-29 01:28:58,991 INFO L796 eck$LassoCheckResult]: Loop: 202#L21 assume !(main_~p~0 < main_~q~0); 203#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 216#L18 assume !(main_~q~0 < main_~p~0); 202#L21 [2020-07-29 01:28:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-07-29 01:28:58,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:58,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667887550] [2020-07-29 01:28:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:58,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:59,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:59,003 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:59,004 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-07-29 01:28:59,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:59,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747024004] [2020-07-29 01:28:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:59,077 INFO L280 TraceCheckUtils]: 0: Hoare triple {315#true} assume !(main_~p~0 < main_~q~0); {317#(<= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)} is VALID [2020-07-29 01:28:59,078 INFO L280 TraceCheckUtils]: 1: Hoare triple {317#(<= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)} assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); {318#(<= (+ ULTIMATE.start_main_~q~0 1) ULTIMATE.start_main_~p~0)} is VALID [2020-07-29 01:28:59,079 INFO L280 TraceCheckUtils]: 2: Hoare triple {318#(<= (+ ULTIMATE.start_main_~q~0 1) ULTIMATE.start_main_~p~0)} assume !(main_~q~0 < main_~p~0); {316#false} is VALID [2020-07-29 01:28:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:28:59,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747024004] [2020-07-29 01:28:59,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:28:59,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 01:28:59,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277883774] [2020-07-29 01:28:59,086 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-29 01:28:59,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:28:59,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 01:28:59,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-29 01:28:59,090 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. cyclomatic complexity: 16 Second operand 4 states. [2020-07-29 01:28:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:28:59,121 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2020-07-29 01:28:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-29 01:28:59,122 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:28:59,127 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:28:59,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2020-07-29 01:28:59,130 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:28:59,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2020-07-29 01:28:59,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 01:28:59,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 01:28:59,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 01:28:59,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 01:28:59,130 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:28:59,131 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:28:59,131 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:28:59,131 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-29 01:28:59,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 01:28:59,131 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:28:59,132 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 01:28:59,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 01:28:59 BoogieIcfgContainer [2020-07-29 01:28:59,139 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 01:28:59,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:28:59,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:28:59,140 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:28:59,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:28:56" (3/4) ... [2020-07-29 01:28:59,144 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 01:28:59,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:28:59,148 INFO L168 Benchmark]: Toolchain (without parser) took 3697.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 960.2 MB in the beginning and 817.4 MB in the end (delta: 142.9 MB). Peak memory consumption was 279.2 MB. Max. memory is 11.5 GB. [2020-07-29 01:28:59,149 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:28:59,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:28:59,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:28:59,151 INFO L168 Benchmark]: Boogie Preprocessor took 36.10 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:28:59,152 INFO L168 Benchmark]: RCFGBuilder took 339.67 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2020-07-29 01:28:59,153 INFO L168 Benchmark]: BuchiAutomizer took 2886.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 822.0 MB in the end (delta: 290.9 MB). Peak memory consumption was 290.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:28:59,154 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 1.2 GB. Free memory was 822.0 MB in the beginning and 817.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:28:59,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 98.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.10 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 339.67 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2886.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 822.0 MB in the end (delta: 290.9 MB). Peak memory consumption was 290.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.19 ms. Allocated memory is still 1.2 GB. Free memory was 822.0 MB in the beginning and 817.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 20 SDslu, 9 SDs, 0 SdLazy, 38 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 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...