./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/nest-if3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67bb0790f696b3c18eb630bed2fc34fee971c82b .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 03:17:51,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 03:17:51,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 03:17:51,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 03:17:51,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 03:17:51,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 03:17:51,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 03:17:51,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 03:17:51,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 03:17:51,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 03:17:51,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 03:17:51,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 03:17:51,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 03:17:51,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 03:17:51,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 03:17:51,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 03:17:51,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 03:17:51,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 03:17:51,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 03:17:51,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 03:17:51,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 03:17:51,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 03:17:51,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 03:17:51,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 03:17:51,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 03:17:51,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 03:17:51,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 03:17:51,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 03:17:51,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 03:17:51,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 03:17:51,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 03:17:51,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 03:17:51,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 03:17:51,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 03:17:51,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 03:17:51,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 03:17:51,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 03:17:51,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 03:17:51,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 03:17:51,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 03:17:51,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 03:17:51,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 03:17:51,507 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 03:17:51,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 03:17:51,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 03:17:51,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 03:17:51,515 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 03:17:51,515 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 03:17:51,515 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 03:17:51,516 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 03:17:51,516 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 03:17:51,516 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 03:17:51,516 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 03:17:51,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 03:17:51,517 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 03:17:51,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 03:17:51,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 03:17:51,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 03:17:51,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 03:17:51,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 03:17:51,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 03:17:51,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 03:17:51,520 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 03:17:51,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 03:17:51,520 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 03:17:51,521 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 03:17:51,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 03:17:51,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 03:17:51,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 03:17:51,522 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 03:17:51,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 03:17:51,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 03:17:51,522 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 03:17:51,525 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 03:17:51,527 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2019-11-28 03:17:51,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 03:17:51,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 03:17:51,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 03:17:51,853 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 03:17:51,854 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 03:17:51,855 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-28 03:17:51,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97bdf41f/acb6ffd4d6014a66bbe888bea27ce468/FLAG8e17a5a8f [2019-11-28 03:17:52,332 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 03:17:52,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-28 03:17:52,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97bdf41f/acb6ffd4d6014a66bbe888bea27ce468/FLAG8e17a5a8f [2019-11-28 03:17:52,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97bdf41f/acb6ffd4d6014a66bbe888bea27ce468 [2019-11-28 03:17:52,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 03:17:52,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 03:17:52,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 03:17:52,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 03:17:52,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 03:17:52,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:52" (1/1) ... [2019-11-28 03:17:52,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8bcb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:52, skipping insertion in model container [2019-11-28 03:17:52,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:52" (1/1) ... [2019-11-28 03:17:52,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 03:17:52,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 03:17:52,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:17:53,005 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 03:17:53,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:17:53,047 INFO L208 MainTranslator]: Completed translation [2019-11-28 03:17:53,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53 WrapperNode [2019-11-28 03:17:53,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 03:17:53,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 03:17:53,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 03:17:53,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 03:17:53,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 03:17:53,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 03:17:53,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 03:17:53,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 03:17:53,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... [2019-11-28 03:17:53,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 03:17:53,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 03:17:53,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 03:17:53,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 03:17:53,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:53,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 03:17:53,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 03:17:53,453 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 03:17:53,453 INFO L297 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 03:17:53,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:53 BoogieIcfgContainer [2019-11-28 03:17:53,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 03:17:53,456 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 03:17:53,456 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 03:17:53,460 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 03:17:53,461 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:17:53,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:17:52" (1/3) ... [2019-11-28 03:17:53,462 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34c840cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:53, skipping insertion in model container [2019-11-28 03:17:53,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:17:53,463 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:53" (2/3) ... [2019-11-28 03:17:53,463 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34c840cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:53, skipping insertion in model container [2019-11-28 03:17:53,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:17:53,464 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:53" (3/3) ... [2019-11-28 03:17:53,465 INFO L371 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2019-11-28 03:17:53,530 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 03:17:53,531 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 03:17:53,531 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 03:17:53,531 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 03:17:53,532 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 03:17:53,532 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 03:17:53,533 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 03:17:53,533 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 03:17:53,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 03:17:53,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 03:17:53,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:53,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:53,611 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 03:17:53,611 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 03:17:53,611 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 03:17:53,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 03:17:53,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 03:17:53,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:53,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:53,614 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 03:17:53,615 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 03:17:53,624 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 14#L14true assume !!(main_~l~0 > 0); 3#L15true assume !!(main_~l~0 < 1000000); 7#L16true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 15#L17-3true [2019-11-28 03:17:53,625 INFO L796 eck$LassoCheckResult]: Loop: 15#L17-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 8#L18-2true assume !true; 4#L18-3true assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 5#L17-2true main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 15#L17-3true [2019-11-28 03:17:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:53,633 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2019-11-28 03:17:53,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:53,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543693642] [2019-11-28 03:17:53,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,770 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:53,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:53,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1683322, now seen corresponding path program 1 times [2019-11-28 03:17:53,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:53,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133186021] [2019-11-28 03:17:53,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:53,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133186021] [2019-11-28 03:17:53,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:17:53,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 03:17:53,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515218903] [2019-11-28 03:17:53,814 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 03:17:53,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:17:53,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 03:17:53,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 03:17:53,834 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-28 03:17:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:17:53,842 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2019-11-28 03:17:53,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 03:17:53,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-11-28 03:17:53,846 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 03:17:53,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2019-11-28 03:17:53,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 03:17:53,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-28 03:17:53,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2019-11-28 03:17:53,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:17:53,853 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 03:17:53,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2019-11-28 03:17:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 03:17:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 03:17:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-28 03:17:53,881 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 03:17:53,882 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 03:17:53,882 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 03:17:53,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2019-11-28 03:17:53,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 03:17:53,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:53,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:53,883 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 03:17:53,884 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 03:17:53,884 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 42#L14 assume !!(main_~l~0 > 0); 39#L15 assume !!(main_~l~0 < 1000000); 40#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 38#L17-3 [2019-11-28 03:17:53,884 INFO L796 eck$LassoCheckResult]: Loop: 38#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 43#L18-2 assume !(main_~i~0 < main_~n~0); 36#L18-3 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 37#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 38#L17-3 [2019-11-28 03:17:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:53,884 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 2 times [2019-11-28 03:17:53,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:53,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895524556] [2019-11-28 03:17:53,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,908 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:53,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1668907, now seen corresponding path program 1 times [2019-11-28 03:17:53,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:53,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331447286] [2019-11-28 03:17:53,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,939 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:53,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1295853045, now seen corresponding path program 1 times [2019-11-28 03:17:53,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:53,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138019833] [2019-11-28 03:17:53,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:53,961 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:54,043 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:17:54,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:17:54,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:17:54,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:17:54,045 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:17:54,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:54,045 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:17:54,046 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:17:54,046 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2019-11-28 03:17:54,046 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:17:54,046 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:17:54,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:54,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:54,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:54,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:17:54,184 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:54,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:17:54,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:17:54,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:17:54,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=7} Honda state: {ULTIMATE.start_main_#t~nondet5=7} 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 [2019-11-28 03:17:54,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:17:54,205 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:54,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:17:54,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:17:54,522 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:17:54,524 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:17:54,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:17:54,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:17:54,525 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:17:54,525 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:17:54,525 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:54,525 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:17:54,525 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:17:54,526 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2019-11-28 03:17:54,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:17:54,526 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:17:54,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:54,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:54,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:54,673 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:17:54,679 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:54,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:17:54,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:17:54,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:17:54,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:17:54,691 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 03:17:54,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:17:54,694 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-28 03:17:54,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:54,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe 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) [2019-11-28 03:17:54,722 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:17:54,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:17:54,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:17:54,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:17:54,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:17:54,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:17:54,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:17:54,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:54,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:17:54,746 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:17:54,747 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:54,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:17:54,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:17:54,756 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:17:54,757 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2019-11-28 03:17:54,762 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:17:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:54,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:17:54,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:54,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:17:54,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:54,870 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:17:54,871 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 03:17:54,920 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 17 states and 23 transitions. Complement of second has 4 states. [2019-11-28 03:17:54,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:17:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:17:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-28 03:17:54,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 03:17:54,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:54,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-28 03:17:54,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:54,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-28 03:17:54,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:54,927 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2019-11-28 03:17:54,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:17:54,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 19 transitions. [2019-11-28 03:17:54,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 03:17:54,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-28 03:17:54,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2019-11-28 03:17:54,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:17:54,930 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-28 03:17:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2019-11-28 03:17:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 03:17:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 03:17:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-28 03:17:54,933 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-28 03:17:54,933 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-28 03:17:54,933 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 03:17:54,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2019-11-28 03:17:54,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:17:54,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:54,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:54,935 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 03:17:54,935 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:17:54,935 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 117#L14 assume !!(main_~l~0 > 0); 110#L15 assume !!(main_~l~0 < 1000000); 111#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 118#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 112#L18-2 [2019-11-28 03:17:54,935 INFO L796 eck$LassoCheckResult]: Loop: 112#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 113#L4 assume !(0 == __VERIFIER_assert_~cond); 119#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 112#L18-2 [2019-11-28 03:17:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:54,936 INFO L82 PathProgramCache]: Analyzing trace with hash 29742509, now seen corresponding path program 1 times [2019-11-28 03:17:54,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:54,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922264214] [2019-11-28 03:17:54,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:54,948 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 1 times [2019-11-28 03:17:54,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:54,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723301164] [2019-11-28 03:17:54,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:54,970 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1295854647, now seen corresponding path program 1 times [2019-11-28 03:17:54,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:54,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304436820] [2019-11-28 03:17:54,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:55,010 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:55,051 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:17:55,051 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:17:55,052 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:17:55,052 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:17:55,052 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:17:55,052 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:55,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:17:55,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:17:55,053 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2019-11-28 03:17:55,053 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:17:55,053 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:17:55,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:55,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:55,152 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:17:55,152 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:55,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:17:55,164 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 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 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:55,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:17:55,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:17:55,256 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:17:55,259 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:17:55,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:17:55,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:17:55,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:17:55,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:17:55,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:55,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:17:55,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:17:55,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2019-11-28 03:17:55,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:17:55,261 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:17:55,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:55,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:55,348 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:17:55,348 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:55,353 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:17:55,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:17:55,356 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:17:55,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:17:55,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:17:55,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:17:55,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:17:55,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:17:55,363 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:17:55,379 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 03:17:55,380 INFO L444 ModelExtractionUtils]: 2 out of 6 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:55,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:17:55,386 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:17:55,387 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:17:55,387 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:55,391 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:17:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:55,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:17:55,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:55,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:17:55,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:55,466 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:17:55,466 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-28 03:17:55,496 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 31 states and 40 transitions. Complement of second has 7 states. [2019-11-28 03:17:55,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 03:17:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:17:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-28 03:17:55,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-28 03:17:55,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:55,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-28 03:17:55,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:55,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-28 03:17:55,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:55,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2019-11-28 03:17:55,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:17:55,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 20 states and 26 transitions. [2019-11-28 03:17:55,503 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 03:17:55,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 03:17:55,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2019-11-28 03:17:55,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:17:55,504 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-28 03:17:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2019-11-28 03:17:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2019-11-28 03:17:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 03:17:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-28 03:17:55,507 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-28 03:17:55,507 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-28 03:17:55,507 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 03:17:55,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2019-11-28 03:17:55,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:17:55,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:55,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:55,509 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:17:55,509 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:17:55,509 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 211#L14 assume !!(main_~l~0 > 0); 200#L15 assume !!(main_~l~0 < 1000000); 201#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 209#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 207#L18-2 assume !(main_~i~0 < main_~n~0); 202#L18-3 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5; 203#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 204#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 205#L18-2 [2019-11-28 03:17:55,509 INFO L796 eck$LassoCheckResult]: Loop: 205#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 206#L4 assume !(0 == __VERIFIER_assert_~cond); 212#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 205#L18-2 [2019-11-28 03:17:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:55,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1516740677, now seen corresponding path program 1 times [2019-11-28 03:17:55,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:55,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693518928] [2019-11-28 03:17:55,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:55,528 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 2 times [2019-11-28 03:17:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:55,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165985713] [2019-11-28 03:17:55,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:55,549 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2129380705, now seen corresponding path program 1 times [2019-11-28 03:17:55,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:55,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375756919] [2019-11-28 03:17:55,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:55,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375756919] [2019-11-28 03:17:55,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868255146] [2019-11-28 03:17:55,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 03:17:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:55,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:17:55,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:55,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 03:17:55,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-28 03:17:55,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717113624] [2019-11-28 03:17:55,743 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:17:55,744 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:17:55,744 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:17:55,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:17:55,744 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:17:55,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:55,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:17:55,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:17:55,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2019-11-28 03:17:55,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:17:55,745 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:17:55,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:55,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:55,831 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:17:55,831 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:55,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:17:55,841 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:55,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:17:55,866 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:55,999 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:17:56,002 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:17:56,002 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:17:56,002 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:17:56,002 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:17:56,003 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:17:56,003 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:56,003 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:17:56,003 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:17:56,003 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2019-11-28 03:17:56,003 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:17:56,003 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:17:56,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:56,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:17:56,114 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:17:56,115 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:56,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:17:56,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:17:56,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:17:56,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:17:56,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:17:56,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:17:56,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:17:56,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:56,130 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:56,148 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:56,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:17:56,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:17:56,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:17:56,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:17:56,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:17:56,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:17:56,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:17:56,159 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:17:56,164 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:17:56,164 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:17:56,169 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:17:56,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:17:56,170 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:17:56,170 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-11-28 03:17:56,174 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:17:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:56,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:17:56,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:56,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:17:56,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:56,242 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:17:56,242 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 03:17:56,268 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2019-11-28 03:17:56,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 03:17:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:17:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-28 03:17:56,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:17:56,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:56,271 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 03:17:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:56,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:17:56,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:56,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:17:56,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:56,319 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:17:56,319 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 03:17:56,344 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2019-11-28 03:17:56,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 03:17:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:17:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-28 03:17:56,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:17:56,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:56,346 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 03:17:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:56,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:17:56,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:56,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:17:56,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:17:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:56,394 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:17:56,394 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 03:17:56,413 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 22 states and 27 transitions. Complement of second has 6 states. [2019-11-28 03:17:56,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 03:17:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:17:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-11-28 03:17:56,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:17:56,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:56,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 03:17:56,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:56,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 03:17:56,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:17:56,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2019-11-28 03:17:56,421 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:17:56,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-28 03:17:56,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 03:17:56,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 03:17:56,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 03:17:56,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:17:56,422 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:17:56,422 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:17:56,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:17:56,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 03:17:56,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 03:17:56,423 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2019-11-28 03:17:56,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:17:56,424 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 03:17:56,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 03:17:56,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 03:17:56,426 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:17:56,426 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 03:17:56,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 03:17:56,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 03:17:56,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 03:17:56,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:17:56,427 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:17:56,428 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:17:56,428 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:17:56,428 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 03:17:56,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 03:17:56,428 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:17:56,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 03:17:56,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:17:56 BoogieIcfgContainer [2019-11-28 03:17:56,436 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 03:17:56,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 03:17:56,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 03:17:56,437 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 03:17:56,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:53" (3/4) ... [2019-11-28 03:17:56,442 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 03:17:56,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 03:17:56,445 INFO L168 Benchmark]: Toolchain (without parser) took 3666.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 959.0 MB in the beginning and 848.5 MB in the end (delta: 110.6 MB). Peak memory consumption was 257.4 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:56,446 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:17:56,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.27 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:56,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:56,448 INFO L168 Benchmark]: Boogie Preprocessor took 41.61 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. [2019-11-28 03:17:56,449 INFO L168 Benchmark]: RCFGBuilder took 255.72 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: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:56,450 INFO L168 Benchmark]: BuchiAutomizer took 2980.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.5 MB in the end (delta: 274.6 MB). Peak memory consumption was 274.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:56,451 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 1.2 GB. Free memory is still 848.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:17:56,455 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.27 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 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 106.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.61 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 255.72 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: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2980.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.5 MB in the end (delta: 274.6 MB). Peak memory consumption was 274.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.41 ms. Allocated memory is still 1.2 GB. Free memory is still 848.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 70 SDtfs, 66 SDslu, 28 SDs, 0 SdLazy, 41 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf98 lsp94 ukn100 mio100 lsp100 div100 bol100 ite121 ukn100 eq169 hnf91 smp70 dnf100 smp100 tf106 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...