./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer --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 7c08193784b646afd298f73ae6296b7af2e0cac1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:40:53,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:40:53,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:40:53,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:40:53,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:40:53,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:40:53,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:40:53,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:40:53,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:40:53,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:40:53,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:40:53,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:40:53,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:40:53,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:40:53,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:40:53,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:40:53,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:40:53,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:40:53,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:40:53,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:40:53,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:40:53,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:40:53,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:40:53,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:40:53,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:40:53,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:40:53,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:40:53,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:40:53,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:40:53,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:40:53,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:40:53,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:40:53,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:40:53,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:40:53,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:40:53,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:40:53,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:40:53,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:40:53,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:40:53,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:40:53,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:40:53,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:40:53,536 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:40:53,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:40:53,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:40:53,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:40:53,547 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:40:53,547 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:40:53,548 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:40:53,548 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:40:53,548 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:40:53,548 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:40:53,549 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:40:53,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:40:53,549 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:40:53,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:40:53,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:40:53,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:40:53,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:40:53,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:40:53,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:40:53,551 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:40:53,551 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:40:53,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:40:53,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:40:53,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:40:53,552 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:40:53,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:40:53,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:40:53,553 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:40:53,554 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:40:53,554 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer 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 -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2019-11-15 23:40:53,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:40:53,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:40:53,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:40:53,592 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:40:53,593 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:40:53,593 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-11-15 23:40:53,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/data/2a143392b/3bae9e5f809940489fc3e8533a14b317/FLAGab8da6f2c [2019-11-15 23:40:53,976 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:40:53,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-11-15 23:40:53,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/data/2a143392b/3bae9e5f809940489fc3e8533a14b317/FLAGab8da6f2c [2019-11-15 23:40:54,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/data/2a143392b/3bae9e5f809940489fc3e8533a14b317 [2019-11-15 23:40:54,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:40:54,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:40:54,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:40:54,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:40:54,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:40:54,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3528e6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54, skipping insertion in model container [2019-11-15 23:40:54,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,393 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:40:54,406 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:40:54,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:40:54,565 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:40:54,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:40:54,678 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:40:54,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54 WrapperNode [2019-11-15 23:40:54,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:40:54,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:40:54,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:40:54,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:40:54,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:40:54,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:40:54,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:40:54,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:40:54,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... [2019-11-15 23:40:54,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:40:54,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:40:54,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:40:54,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:40:54,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/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 [2019-11-15 23:40:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:40:54,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:40:54,915 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:40:54,915 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 23:40:54,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:40:54 BoogieIcfgContainer [2019-11-15 23:40:54,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:40:54,917 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:40:54,917 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:40:54,919 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:40:54,920 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:40:54,920 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:40:54" (1/3) ... [2019-11-15 23:40:54,921 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@490d2fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:40:54, skipping insertion in model container [2019-11-15 23:40:54,921 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:40:54,922 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:54" (2/3) ... [2019-11-15 23:40:54,922 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@490d2fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:40:54, skipping insertion in model container [2019-11-15 23:40:54,922 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:40:54,922 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:40:54" (3/3) ... [2019-11-15 23:40:54,924 INFO L371 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-11-15 23:40:54,970 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:40:54,970 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:40:54,971 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:40:54,971 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:40:54,971 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:40:54,971 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:40:54,971 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:40:54,971 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:40:54,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:40:55,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:40:55,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:55,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:55,009 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:40:55,009 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:40:55,009 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:40:55,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:40:55,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:40:55,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:55,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:55,011 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:40:55,011 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:40:55,018 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L19-2true [2019-11-15 23:40:55,018 INFO L793 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 9#L21-2true assume !(main_~j~0 <= main_~i~0); 8#L21-3true main_~i~0 := 1 + main_~i~0; 6#L19-2true [2019-11-15 23:40:55,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:55,024 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 23:40:55,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:55,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235380763] [2019-11-15 23:40:55,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:55,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:55,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:55,141 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-15 23:40:55,142 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:55,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819407238] [2019-11-15 23:40:55,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:55,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:55,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:55,158 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:55,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:55,160 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-15 23:40:55,160 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:55,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526271487] [2019-11-15 23:40:55,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:55,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:55,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:55,172 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:55,243 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:55,243 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:55,243 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:55,244 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:55,244 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:40:55,244 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:55,244 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:55,244 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:55,244 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-11-15 23:40:55,244 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:55,245 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:55,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:55,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:55,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:55,380 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:55,380 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:55,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:55,387 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:55,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:40:55,398 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 /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:55,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:55,406 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 [2019-11-15 23:40:55,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:40:55,414 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/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 [2019-11-15 23:40:55,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:55,427 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:55,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:40:55,443 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:55,544 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:40:55,546 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:55,547 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:55,547 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:55,547 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:55,547 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:40:55,547 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:55,547 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:55,548 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:55,548 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-11-15 23:40:55,548 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:55,548 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:55,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:55,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:55,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:55,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:55,740 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:40:55,741 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 [2019-11-15 23:40:55,743 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:55,743 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:55,743 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:55,743 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:55,756 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:55,757 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:55,776 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:55,777 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 [2019-11-15 23:40:55,777 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:55,778 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:55,778 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:55,778 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:55,780 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:55,780 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:55,799 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:55,799 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 [2019-11-15 23:40:55,801 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:55,801 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:55,802 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:55,802 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:55,803 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:55,806 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:55,807 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:55,826 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:40:55,831 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:40:55,831 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:40:55,833 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:40:55,833 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:40:55,834 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:40:55,834 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-15 23:40:55,837 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:40:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:55,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:40:55,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:55,893 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:40:55,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:55,949 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-15 23:40:55,949 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-11-15 23:40:56,029 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 30 states and 48 transitions. Complement of second has 9 states. [2019-11-15 23:40:56,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-15 23:40:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:40:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2019-11-15 23:40:56,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-15 23:40:56,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:56,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 23:40:56,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:56,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-15 23:40:56,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:56,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 48 transitions. [2019-11-15 23:40:56,037 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:40:56,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 13 states and 18 transitions. [2019-11-15 23:40:56,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 23:40:56,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-15 23:40:56,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2019-11-15 23:40:56,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:40:56,043 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-15 23:40:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2019-11-15 23:40:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-15 23:40:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 23:40:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-15 23:40:56,065 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-15 23:40:56,065 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-15 23:40:56,065 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:40:56,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2019-11-15 23:40:56,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:40:56,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:56,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:56,066 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:40:56,066 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-15 23:40:56,067 INFO L791 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 83#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-11-15 23:40:56,067 INFO L793 eck$LassoCheckResult]: Loop: 85#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 91#L21-2 assume !(main_~j~0 <= main_~i~0); 88#L21-3 main_~i~0 := 1 + main_~i~0; 84#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-11-15 23:40:56,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:56,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-15 23:40:56,067 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:56,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874519283] [2019-11-15 23:40:56,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,076 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1506610, now seen corresponding path program 1 times [2019-11-15 23:40:56,077 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:56,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394584962] [2019-11-15 23:40:56,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,087 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:56,087 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2019-11-15 23:40:56,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:56,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557611731] [2019-11-15 23:40:56,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,126 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:56,153 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:56,153 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:56,153 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:56,154 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:56,154 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:40:56,154 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:56,154 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:56,154 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:56,154 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-11-15 23:40:56,154 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:56,154 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:56,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,238 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:56,239 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:56,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:56,243 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:56,248 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:40:56,248 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 /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:56,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:56,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:40:56,267 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:40:56,267 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 /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:56,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:56,282 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:56,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:40:56,303 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 [2019-11-15 23:40:56,426 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:40:56,428 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:56,429 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:56,429 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:56,429 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:56,429 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:40:56,429 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:56,429 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:56,429 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:56,429 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-11-15 23:40:56,429 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:56,429 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:56,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,513 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:56,514 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:40:56,514 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 [2019-11-15 23:40:56,515 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:56,515 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:56,515 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:56,515 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:56,517 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:56,517 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:56,528 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:56,532 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 [2019-11-15 23:40:56,533 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:56,534 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:56,534 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:56,534 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:56,536 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:56,537 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:56,541 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:56,541 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 [2019-11-15 23:40:56,546 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:56,547 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:56,547 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:56,547 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:56,547 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:56,548 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:56,551 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:56,558 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:40:56,569 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:40:56,574 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:40:56,575 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:40:56,576 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:40:56,576 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:40:56,576 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-15 23:40:56,577 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:40:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:56,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:40:56,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:56,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:40:56,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:40:56,631 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 [2019-11-15 23:40:56,631 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-15 23:40:56,658 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 22 states and 31 transitions. Complement of second has 6 states. [2019-11-15 23:40:56,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:40:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:40:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-15 23:40:56,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-15 23:40:56,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:56,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-15 23:40:56,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:56,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-15 23:40:56,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:56,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2019-11-15 23:40:56,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:56,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 22 transitions. [2019-11-15 23:40:56,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-15 23:40:56,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 23:40:56,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2019-11-15 23:40:56,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:40:56,663 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-11-15 23:40:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2019-11-15 23:40:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-15 23:40:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 23:40:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2019-11-15 23:40:56,665 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-11-15 23:40:56,665 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-11-15 23:40:56,665 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:40:56,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2019-11-15 23:40:56,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:56,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:56,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:56,667 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 23:40:56,667 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 23:40:56,667 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 159#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-11-15 23:40:56,667 INFO L793 eck$LassoCheckResult]: Loop: 163#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-11-15 23:40:56,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:56,667 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-15 23:40:56,668 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:56,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827673717] [2019-11-15 23:40:56,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,688 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:56,689 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-15 23:40:56,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:56,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438130382] [2019-11-15 23:40:56,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,694 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:56,695 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2019-11-15 23:40:56,695 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:56,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208737550] [2019-11-15 23:40:56,695 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,696 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:56,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:56,726 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:56,748 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:56,748 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:56,748 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:56,748 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:56,748 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:40:56,748 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:56,749 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:56,749 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:56,749 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-11-15 23:40:56,749 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:56,749 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:56,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:56,810 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:56,810 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:56,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:56,828 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 [2019-11-15 23:40:56,833 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:40:56,833 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 /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:56,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:56,853 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:40:56,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:40:56,876 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:57,036 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:40:57,038 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:57,039 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:57,039 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:57,039 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:57,039 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:40:57,039 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:57,039 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:57,039 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:57,040 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-11-15 23:40:57,040 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:57,040 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:57,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,097 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:57,097 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:40:57,098 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 [2019-11-15 23:40:57,099 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:57,099 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:57,099 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:57,099 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:57,101 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:57,101 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:57,106 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:57,106 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 [2019-11-15 23:40:57,107 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:57,107 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:57,107 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:57,107 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:57,107 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:57,108 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:57,108 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:57,112 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:40:57,115 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:40:57,115 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 23:40:57,115 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:40:57,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:40:57,116 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:40:57,116 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-11-15 23:40:57,116 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:40:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,156 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:57,157 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 [2019-11-15 23:40:57,157 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10 Second operand 2 states. [2019-11-15 23:40:57,174 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 26 states and 38 transitions. Complement of second has 5 states. [2019-11-15 23:40:57,176 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 [2019-11-15 23:40:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:40:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 23:40:57,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-15 23:40:57,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-15 23:40:57,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 23:40:57,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 38 transitions. [2019-11-15 23:40:57,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:57,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 22 states and 33 transitions. [2019-11-15 23:40:57,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 23:40:57,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 23:40:57,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-11-15 23:40:57,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:40:57,182 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-11-15 23:40:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-11-15 23:40:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-15 23:40:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 23:40:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2019-11-15 23:40:57,185 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-11-15 23:40:57,185 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-11-15 23:40:57,185 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:40:57,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2019-11-15 23:40:57,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:57,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:57,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:57,199 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2019-11-15 23:40:57,199 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 23:40:57,199 INFO L791 eck$LassoCheckResult]: Stem: 229#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 230#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 232#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 236#L21-2 assume !(main_~j~0 <= main_~i~0); 245#L21-3 main_~i~0 := 1 + main_~i~0; 243#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 239#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-11-15 23:40:57,199 INFO L793 eck$LassoCheckResult]: Loop: 238#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-11-15 23:40:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:57,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 2 times [2019-11-15 23:40:57,200 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:57,200 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738438663] [2019-11-15 23:40:57,200 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:57,200 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:57,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:57,219 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:57,220 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-15 23:40:57,220 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:57,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822440941] [2019-11-15 23:40:57,220 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:57,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:57,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:57,237 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:57,238 INFO L82 PathProgramCache]: Analyzing trace with hash 780807227, now seen corresponding path program 3 times [2019-11-15 23:40:57,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:57,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005070229] [2019-11-15 23:40:57,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:57,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:57,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:57,259 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:57,271 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:57,271 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:57,271 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:57,271 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:57,271 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:40:57,271 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:57,271 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:57,272 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:57,272 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-11-15 23:40:57,272 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:57,272 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:57,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,322 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:57,322 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:57,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:40:57,327 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cdf0935-72fb-44b2-b3a7-1a435fcca983/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:57,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:40:57,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:40:57,462 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:40:57,464 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:57,464 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:57,464 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:57,464 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:57,464 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:40:57,464 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:57,464 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:57,465 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:57,465 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-11-15 23:40:57,465 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:57,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:57,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:57,534 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:57,535 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:40:57,535 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 [2019-11-15 23:40:57,536 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:57,536 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:57,536 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:57,536 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:57,536 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:57,537 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:57,537 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:57,540 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:40:57,551 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:40:57,556 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 23:40:57,557 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:40:57,557 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:40:57,557 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:40:57,558 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-11-15 23:40:57,558 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:40:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,598 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:57,599 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 [2019-11-15 23:40:57,599 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-15 23:40:57,615 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-11-15 23:40:57,616 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 [2019-11-15 23:40:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:40:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 23:40:57,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-15 23:40:57,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,617 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:40:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,642 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:57,643 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-15 23:40:57,643 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-15 23:40:57,651 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-11-15 23:40:57,652 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 [2019-11-15 23:40:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:40:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 23:40:57,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-15 23:40:57,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,653 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:40:57,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:57,686 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:40:57,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:57,687 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 1 loop predicates [2019-11-15 23:40:57,687 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-15 23:40:57,698 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 4 states. [2019-11-15 23:40:57,698 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 [2019-11-15 23:40:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:40:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-15 23:40:57,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-15 23:40:57,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-15 23:40:57,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,700 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-15 23:40:57,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:57,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2019-11-15 23:40:57,701 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:40:57,701 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-11-15 23:40:57,701 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:40:57,702 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:40:57,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:40:57,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:40:57,702 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:40:57,702 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:40:57,702 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:40:57,702 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 23:40:57,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:40:57,703 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:40:57,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:40:57,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:40:57 BoogieIcfgContainer [2019-11-15 23:40:57,709 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:40:57,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:40:57,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:40:57,710 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:40:57,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:40:54" (3/4) ... [2019-11-15 23:40:57,734 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:40:57,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:40:57,737 INFO L168 Benchmark]: Toolchain (without parser) took 3357.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 224.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:57,740 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:57,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:57,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:57,744 INFO L168 Benchmark]: Boogie Preprocessor took 15.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:57,751 INFO L168 Benchmark]: RCFGBuilder took 193.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:57,751 INFO L168 Benchmark]: BuchiAutomizer took 2792.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.0 MB in the end (delta: 236.7 MB). Peak memory consumption was 236.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:57,752 INFO L168 Benchmark]: Witness Printer took 24.97 ms. Allocated memory is still 1.2 GB. Free memory was 896.0 MB in the beginning and 1.1 GB in the end (delta: -249.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:57,758 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2792.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.0 MB in the end (delta: 236.7 MB). Peak memory consumption was 236.7 MB. Max. memory is 11.5 GB. * Witness Printer took 24.97 ms. Allocated memory is still 1.2 GB. Free memory was 896.0 MB in the beginning and 1.1 GB in the end (delta: -249.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 32 SDslu, 9 SDs, 0 SdLazy, 50 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax191 hnf99 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf110 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...