./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:20:20,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:20:20,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:20:20,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:20:20,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:20:20,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:20:20,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:20:20,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:20:20,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:20:20,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:20:20,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:20:20,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:20:20,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:20:20,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:20:20,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:20:20,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:20:20,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:20:20,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:20:20,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:20:20,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:20:20,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:20:20,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:20:20,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:20:20,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:20:20,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:20:20,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:20:20,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:20:20,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:20:20,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:20:20,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:20:20,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:20:20,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:20:20,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:20:20,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:20:20,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:20:20,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:20:20,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:20:20,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:20:20,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:20:20,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:20:20,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:20:20,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 22:20:20,535 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:20:20,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:20:20,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:20:20,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:20:20,537 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:20:20,538 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 22:20:20,538 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 22:20:20,538 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 22:20:20,539 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 22:20:20,539 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 22:20:20,539 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 22:20:20,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:20:20,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:20:20,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:20:20,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:20:20,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 22:20:20,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 22:20:20,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 22:20:20,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:20:20,542 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 22:20:20,542 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:20:20,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 22:20:20,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:20:20,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:20:20,543 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 22:20:20,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:20:20,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:20:20,544 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 22:20:20,545 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 22:20:20,545 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2019-11-19 22:20:20,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:20:20,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:20:20,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:20:20,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:20:20,890 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:20:20,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-19 22:20:20,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c23f0d94/2dbd8713801440b19324ae72189f33f7/FLAGd1ff5cd47 [2019-11-19 22:20:21,354 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:20:21,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-19 22:20:21,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c23f0d94/2dbd8713801440b19324ae72189f33f7/FLAGd1ff5cd47 [2019-11-19 22:20:21,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c23f0d94/2dbd8713801440b19324ae72189f33f7 [2019-11-19 22:20:21,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:20:21,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:20:21,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:20:21,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:20:21,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:20:21,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:20:21" (1/1) ... [2019-11-19 22:20:21,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed9cda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:21, skipping insertion in model container [2019-11-19 22:20:21,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:20:21" (1/1) ... [2019-11-19 22:20:21,824 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:20:21,848 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:20:22,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:20:22,075 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:20:22,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:20:22,112 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:20:22,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22 WrapperNode [2019-11-19 22:20:22,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:20:22,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:20:22,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:20:22,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:20:22,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:20:22,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:20:22,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:20:22,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:20:22,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... [2019-11-19 22:20:22,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:20:22,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:20:22,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:20:22,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:20:22,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:20:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:20:22,511 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:20:22,511 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 22:20:22,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:20:22 BoogieIcfgContainer [2019-11-19 22:20:22,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:20:22,513 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 22:20:22,513 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 22:20:22,517 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 22:20:22,518 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:20:22,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 10:20:21" (1/3) ... [2019-11-19 22:20:22,520 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22e24915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:20:22, skipping insertion in model container [2019-11-19 22:20:22,520 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:20:22,520 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:22" (2/3) ... [2019-11-19 22:20:22,521 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22e24915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:20:22, skipping insertion in model container [2019-11-19 22:20:22,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:20:22,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:20:22" (3/3) ... [2019-11-19 22:20:22,523 INFO L371 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-19 22:20:22,574 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 22:20:22,575 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 22:20:22,575 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 22:20:22,575 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:20:22,575 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:20:22,575 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 22:20:22,576 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:20:22,576 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 22:20:22,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-19 22:20:22,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:22,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:22,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:22,619 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 22:20:22,620 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 22:20:22,620 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 22:20:22,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-19 22:20:22,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:22,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:22,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:22,622 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 22:20:22,622 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 22:20:22,629 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2019-11-19 22:20:22,630 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 != main_~K~0); 7#L18true assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 5#L18-2true [2019-11-19 22:20:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-19 22:20:22,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:22,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783422449] [2019-11-19 22:20:22,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:22,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-19 22:20:22,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:22,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683874190] [2019-11-19 22:20:22,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:22,749 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:22,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:22,751 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-19 22:20:22,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:22,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975117417] [2019-11-19 22:20:22,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:22,765 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:22,885 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:22,886 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:22,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:22,887 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:22,887 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:22,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:22,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:22,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:22,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2019-11-19 22:20:22,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:22,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:22,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:22,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:22,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:23,052 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:23,053 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 [2019-11-19 22:20:23,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:23,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:23,084 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:23,084 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:23,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:23,092 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:23,097 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] 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 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 [2019-11-19 22:20:23,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:23,107 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:23,125 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:23,297 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:20:23,300 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:23,300 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:23,300 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:23,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:23,300 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:23,301 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,301 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:23,301 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:23,301 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2019-11-19 22:20:23,301 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:23,301 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:23,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:23,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:23,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:23,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:23,428 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:23,435 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 [2019-11-19 22:20:23,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:23,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:23,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:23,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:23,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:23,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:23,444 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 [2019-11-19 22:20:23,448 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:23,455 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-19 22:20:23,456 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:23,472 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:23,472 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:23,473 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:23,474 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-11-19 22:20:23,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:23,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:20:23,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:23,547 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:23,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:23,568 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 22:20:23,569 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-19 22:20:23,621 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-11-19 22:20:23,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:20:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-19 22:20:23,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-19 22:20:23,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:23,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-19 22:20:23,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:23,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-19 22:20:23,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:23,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-19 22:20:23,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:23,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-19 22:20:23,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-19 22:20:23,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-19 22:20:23,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-19 22:20:23,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:23,649 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 22:20:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-19 22:20:23,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-19 22:20:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-19 22:20:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-19 22:20:23,676 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 22:20:23,676 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 22:20:23,676 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 22:20:23,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-19 22:20:23,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:23,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:23,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:23,677 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:20:23,678 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 22:20:23,678 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 69#L18-2 assume !!(main_~x~0 != main_~K~0); 67#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 63#L18-2 [2019-11-19 22:20:23,678 INFO L796 eck$LassoCheckResult]: Loop: 63#L18-2 assume !!(main_~x~0 != main_~K~0); 64#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 63#L18-2 [2019-11-19 22:20:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-19 22:20:23,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:23,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080158641] [2019-11-19 22:20:23,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:23,690 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:23,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-19 22:20:23,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:23,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576476029] [2019-11-19 22:20:23,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:23,700 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-19 22:20:23,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:23,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058521212] [2019-11-19 22:20:23,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:23,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058521212] [2019-11-19 22:20:23,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111288420] [2019-11-19 22:20:23,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-19 22:20:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:23,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:23,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:20:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:23,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:20:23,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-19 22:20:23,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117315896] [2019-11-19 22:20:23,846 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:23,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:23,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:23,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:23,847 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:23,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:23,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:23,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2019-11-19 22:20:23,848 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:23,848 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:23,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:23,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:23,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:23,926 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:23,926 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:23,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:23,932 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:23,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:23,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:23,951 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,963 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:23,963 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:23,977 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:23,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:23,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:24,185 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:20:24,188 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:24,188 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:24,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:24,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:24,188 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:24,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:24,189 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:24,189 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:24,189 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2019-11-19 22:20:24,189 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:24,189 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:24,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:24,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:24,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:24,255 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:24,256 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-19 22:20:24,262 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 [2019-11-19 22:20:24,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:24,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:24,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:24,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:24,271 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 22:20:24,271 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:24,278 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:24,299 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:24,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:24,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:24,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:24,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:24,306 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 22:20:24,306 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 22:20:24,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:24,327 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 [2019-11-19 22:20:24,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:24,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:24,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:24,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:24,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:24,332 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:24,332 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 [2019-11-19 22:20:24,340 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:24,364 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-19 22:20:24,364 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:24,374 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:24,374 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:24,374 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:24,374 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:24,386 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:20:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:24,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:20:24,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:24,422 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:24,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:24,424 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 22:20:24,424 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-19 22:20:24,444 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-19 22:20:24,445 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 [2019-11-19 22:20:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:20:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-19 22:20:24,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-19 22:20:24,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:24,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-19 22:20:24,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:24,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-19 22:20:24,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:24,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-19 22:20:24,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:24,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-19 22:20:24,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-19 22:20:24,452 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-19 22:20:24,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-19 22:20:24,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:24,452 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-19 22:20:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-19 22:20:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-19 22:20:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-19 22:20:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-19 22:20:24,455 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-19 22:20:24,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:20:24,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:20:24,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:20:24,460 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2019-11-19 22:20:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:20:24,501 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-11-19 22:20:24,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:20:24,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-11-19 22:20:24,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:24,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2019-11-19 22:20:24,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-19 22:20:24,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-19 22:20:24,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2019-11-19 22:20:24,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:24,504 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-19 22:20:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2019-11-19 22:20:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-19 22:20:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-19 22:20:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-19 22:20:24,507 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-19 22:20:24,508 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-19 22:20:24,508 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 22:20:24,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-19 22:20:24,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:24,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:24,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:24,510 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-19 22:20:24,514 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 22:20:24,514 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 158#L18-2 assume !!(main_~x~0 != main_~K~0); 154#L18 [2019-11-19 22:20:24,515 INFO L796 eck$LassoCheckResult]: Loop: 154#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 153#L18-2 assume !!(main_~x~0 != main_~K~0); 154#L18 [2019-11-19 22:20:24,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:24,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-19 22:20:24,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:24,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875736631] [2019-11-19 22:20:24,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:24,530 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:24,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-11-19 22:20:24,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:24,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114663040] [2019-11-19 22:20:24,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:24,539 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:24,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2019-11-19 22:20:24,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:24,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382468801] [2019-11-19 22:20:24,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:24,550 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:24,596 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:24,596 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:24,597 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:24,597 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:24,597 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:24,597 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:24,597 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:24,597 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:24,597 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2019-11-19 22:20:24,597 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:24,598 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:24,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:24,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:24,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:24,697 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:24,697 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-19 22:20:24,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:24,706 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:24,711 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:24,712 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:24,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:24,735 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:24,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:24,761 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:26,891 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:20:26,894 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:26,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:26,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:26,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:26,894 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:26,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:26,895 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:26,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:26,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2019-11-19 22:20:26,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:26,895 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:26,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:26,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:26,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:26,994 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:26,995 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:26,999 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 [2019-11-19 22:20:27,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:27,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:27,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:27,001 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-19 22:20:27,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:27,003 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-19 22:20:27,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:27,008 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:27,018 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:20:27,018 INFO L444 ModelExtractionUtils]: 0 out of 4 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 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:27,023 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:27,024 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:27,024 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:27,024 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~K~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-19 22:20:27,027 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:20:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:27,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:20:27,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:27,060 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:27,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:27,084 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 [2019-11-19 22:20:27,085 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-19 22:20:27,096 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2019-11-19 22:20:27,097 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 [2019-11-19 22:20:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:20:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-19 22:20:27,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-19 22:20:27,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:27,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-19 22:20:27,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:27,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-19 22:20:27,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:27,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-19 22:20:27,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:27,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2019-11-19 22:20:27,101 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-19 22:20:27,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-19 22:20:27,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-11-19 22:20:27,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:27,101 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-19 22:20:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-11-19 22:20:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-19 22:20:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-19 22:20:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-19 22:20:27,103 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-19 22:20:27,103 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-19 22:20:27,103 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 22:20:27,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-19 22:20:27,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 22:20:27,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:27,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:27,104 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-11-19 22:20:27,104 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 22:20:27,104 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 203#L18-2 assume !!(main_~x~0 != main_~K~0); 204#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 205#L18-2 assume !!(main_~x~0 != main_~K~0); 206#L18 [2019-11-19 22:20:27,105 INFO L796 eck$LassoCheckResult]: Loop: 206#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 208#L18-2 assume !!(main_~x~0 != main_~K~0); 206#L18 [2019-11-19 22:20:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:27,105 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-11-19 22:20:27,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:27,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988648253] [2019-11-19 22:20:27,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:27,114 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:27,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-11-19 22:20:27,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:27,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902780364] [2019-11-19 22:20:27,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:27,121 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:27,122 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2019-11-19 22:20:27,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:27,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318839196] [2019-11-19 22:20:27,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:27,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318839196] [2019-11-19 22:20:27,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:20:27,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:20:27,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414913181] [2019-11-19 22:20:27,193 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:27,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:27,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:27,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:27,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:27,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:27,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:27,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:27,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2019-11-19 22:20:27,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:27,194 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:27,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,277 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:27,278 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:27,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:27,291 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:27,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:27,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:29,580 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:20:29,583 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:29,583 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:29,583 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:29,583 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:29,584 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:29,584 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:29,584 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:29,584 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:29,584 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2019-11-19 22:20:29,584 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:29,584 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:29,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,683 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:29,684 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:29,698 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 [2019-11-19 22:20:29,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:29,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:29,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:29,702 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-19 22:20:29,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:29,709 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-19 22:20:29,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:29,716 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:29,720 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:20:29,720 INFO L444 ModelExtractionUtils]: 0 out of 4 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:29,727 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:29,727 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:29,727 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:29,728 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~K~0 + 1 Supporting invariants [] [2019-11-19 22:20:29,731 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:29,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:20:29,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:29,762 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:29,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:29,780 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 [2019-11-19 22:20:29,780 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-19 22:20:29,788 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-11-19 22:20:29,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:20:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-19 22:20:29,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-19 22:20:29,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:29,790 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 22:20:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:29,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:20:29,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:29,814 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:29,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:29,833 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 [2019-11-19 22:20:29,833 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-19 22:20:29,839 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-11-19 22:20:29,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:20:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-19 22:20:29,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Exception during sending of exit command (exit): Broken pipe [2019-11-19 22:20:29,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:29,862 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 22:20:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:29,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:20:29,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:29,902 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:29,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:29,918 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 [2019-11-19 22:20:29,918 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-19 22:20:29,930 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2019-11-19 22:20:29,933 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 [2019-11-19 22:20:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:20:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-19 22:20:29,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-19 22:20:29,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:29,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-19 22:20:29,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:29,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-19 22:20:29,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:29,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-11-19 22:20:29,935 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:20:29,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2019-11-19 22:20:29,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:20:29,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:20:29,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:20:29,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:20:29,936 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:20:29,936 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:20:29,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:20:29,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:20:29,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:20:29,937 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-11-19 22:20:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:20:29,937 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-19 22:20:29,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 22:20:29,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-19 22:20:29,937 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:20:29,938 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:20:29,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:20:29,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:20:29,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:20:29,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:20:29,938 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:20:29,938 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:20:29,938 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:20:29,938 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 22:20:29,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:20:29,939 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:20:29,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 22:20:29,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 10:20:29 BoogieIcfgContainer [2019-11-19 22:20:29,945 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 22:20:29,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:20:29,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:20:29,946 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:20:29,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:20:22" (3/4) ... [2019-11-19 22:20:29,950 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 22:20:29,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:20:29,953 INFO L168 Benchmark]: Toolchain (without parser) took 8147.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Free memory was 955.0 MB in the beginning and 1.2 GB in the end (delta: -195.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:20:29,953 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:20:29,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.53 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:20:29,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -157.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:20:29,955 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:20:29,956 INFO L168 Benchmark]: RCFGBuilder took 278.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:20:29,957 INFO L168 Benchmark]: BuchiAutomizer took 7431.94 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:20:29,958 INFO L168 Benchmark]: Witness Printer took 4.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:20:29,962 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 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.53 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 95.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -157.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 278.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7431.94 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * K and consists of 4 locations. One deterministic module has affine ranking function x + -1 * K and consists of 3 locations. One deterministic module has affine ranking function 2 * K + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 2 * K + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...