./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.13.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/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.13.c -s /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:16,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:16,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:16,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:16,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:16,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:16,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:16,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:16,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:16,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:16,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:16,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:16,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:16,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:16,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:16,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:16,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:16,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:16,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:16,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:16,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:16,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:16,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:16,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:16,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:16,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:16,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:16,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:16,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:16,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:16,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:16,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:16,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:16,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:16,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:16,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:16,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:16,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:16,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:16,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:16,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:16,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:00:16,519 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:16,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:16,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:16,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:16,521 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:16,521 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:00:16,521 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:00:16,521 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:00:16,521 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:00:16,522 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:00:16,522 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:00:16,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:16,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:00:16,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:16,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:16,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:00:16,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:00:16,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:00:16,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:16,523 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:00:16,524 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:16,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:00:16,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:16,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:16,524 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:00:16,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:16,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:16,525 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:00:16,525 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:00:16,526 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/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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 -> 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 [2019-10-22 09:00:16,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:16,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:16,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:16,561 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:16,561 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:16,562 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.13.c [2019-10-22 09:00:16,607 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/data/34f7d91d0/bc3528133f3543c38d3fabf984a9e566/FLAG1b906e0a8 [2019-10-22 09:00:16,967 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:16,967 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/sv-benchmarks/c/termination-restricted-15/b.13.c [2019-10-22 09:00:16,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/data/34f7d91d0/bc3528133f3543c38d3fabf984a9e566/FLAG1b906e0a8 [2019-10-22 09:00:17,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/bin/uautomizer/data/34f7d91d0/bc3528133f3543c38d3fabf984a9e566 [2019-10-22 09:00:17,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:17,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:17,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:17,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:17,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:17,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d01eb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17, skipping insertion in model container [2019-10-22 09:00:17,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,420 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:17,431 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:17,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:17,558 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:17,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:17,634 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:17,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17 WrapperNode [2019-10-22 09:00:17,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:17,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:17,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:17,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:17,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:17,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:17,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:17,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:17,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:17,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:17,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:17,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:17,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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 [2019-10-22 09:00:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:17,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:17,889 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:17,890 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 09:00:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:17 BoogieIcfgContainer [2019-10-22 09:00:17,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:17,891 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:00:17,891 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:00:17,894 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:00:17,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:17,897 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:00:17" (1/3) ... [2019-10-22 09:00:17,898 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17b044de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:17, skipping insertion in model container [2019-10-22 09:00:17,898 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:17,898 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (2/3) ... [2019-10-22 09:00:17,899 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17b044de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:17, skipping insertion in model container [2019-10-22 09:00:17,899 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:17,899 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:17" (3/3) ... [2019-10-22 09:00:17,900 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.13.c [2019-10-22 09:00:17,983 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:00:17,995 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:00:17,995 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:00:17,995 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:17,995 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:17,995 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:00:17,995 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:17,996 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:00:18,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:00:18,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:18,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:18,039 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:18,045 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:00:18,045 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:00:18,046 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:00:18,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:00:18,046 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:18,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:18,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:18,047 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:00:18,047 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:00:18,054 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 10#L16-2true [2019-10-22 09:00:18,055 INFO L793 eck$LassoCheckResult]: Loop: 10#L16-2true assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 8#L13true assume main_~x~0 > main_~z~0;main_~x~0 := main_~x~0 - 1; 10#L16-2true [2019-10-22 09:00:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,060 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 09:00:18,068 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907274005] [2019-10-22 09:00:18,075 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,075 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,175 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:18,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-10-22 09:00:18,177 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306255984] [2019-10-22 09:00:18,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,192 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-10-22 09:00:18,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340548373] [2019-10-22 09:00:18,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,210 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:18,296 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:18,297 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:18,297 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:18,297 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:18,297 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:18,297 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:18,297 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:18,297 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:18,298 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2019-10-22 09:00:18,298 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:18,298 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:18,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,400 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:18,401 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:18,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:18,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:18,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:18,423 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/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:18,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:18,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:18,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:18,433 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/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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 [2019-10-22 09:00:18,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:18,456 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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) [2019-10-22 09:00:18,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:18,470 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 [2019-10-22 09:00:18,610 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:18,611 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:18,612 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:18,612 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:18,612 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:18,612 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:18,612 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:18,612 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:18,612 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:18,612 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2019-10-22 09:00:18,612 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:18,612 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:18,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,664 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:18,668 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:18,670 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 [2019-10-22 09:00:18,671 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:18,671 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:18,672 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:18,672 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:18,675 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:18,676 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:18,683 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:18,683 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 [2019-10-22 09:00:18,684 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:18,684 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:18,684 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:18,684 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:18,686 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:18,687 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:18,694 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:18,695 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 [2019-10-22 09:00:18,696 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:18,696 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:18,696 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:18,696 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:18,697 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:18,697 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:18,698 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:18,704 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:18,711 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 09:00:18,711 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:18,717 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:18,717 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:18,717 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:18,718 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-10-22 09:00:18,721 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:18,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:18,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,793 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:18,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:18,807 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 [2019-10-22 09:00:18,807 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 09:00:18,842 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2019-10-22 09:00:18,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 09:00:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-10-22 09:00:18,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 09:00:18,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:18,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 09:00:18,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:18,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 09:00:18,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:18,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2019-10-22 09:00:18,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:18,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2019-10-22 09:00:18,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 09:00:18,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 09:00:18,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-10-22 09:00:18,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:18,857 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-10-22 09:00:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-10-22 09:00:18,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-10-22 09:00:18,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 09:00:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-10-22 09:00:18,882 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-10-22 09:00:18,882 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-10-22 09:00:18,883 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:00:18,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-10-22 09:00:18,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:18,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:18,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:18,884 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:00:18,884 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:18,884 INFO L791 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 64#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2019-10-22 09:00:18,884 INFO L793 eck$LassoCheckResult]: Loop: 69#L13 assume !(main_~x~0 > main_~z~0); 65#L16 assume main_~y~0 > main_~z~0;main_~y~0 := main_~y~0 - 1; 66#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2019-10-22 09:00:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 09:00:18,885 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116344115] [2019-10-22 09:00:18,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,894 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,895 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-10-22 09:00:18,895 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720812071] [2019-10-22 09:00:18,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,909 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,909 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-10-22 09:00:18,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431940971] [2019-10-22 09:00:18,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:18,934 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:18,960 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:18,960 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:18,960 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:18,960 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:18,960 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:18,960 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:18,960 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:18,960 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:18,961 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2019-10-22 09:00:18,961 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:18,961 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:18,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:18,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:19,012 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:19,013 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:19,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:19,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:19,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:19,024 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/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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 [2019-10-22 09:00:19,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:19,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:19,034 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:19,034 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/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:19,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:19,057 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_916ae76c-e262-4603-bbd3-4a78dc6e54f1/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:19,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:19,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:19,456 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:19,458 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:19,458 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:19,458 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:19,458 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:19,458 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:19,459 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:19,459 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:19,459 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:19,459 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2019-10-22 09:00:19,459 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:19,459 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:19,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:19,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:19,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:19,520 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:19,520 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:19,520 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 [2019-10-22 09:00:19,521 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:19,521 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:19,521 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:19,521 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:19,522 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:00:19,522 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:00:19,534 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:19,543 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 [2019-10-22 09:00:19,544 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:19,544 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:19,544 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:19,544 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:19,544 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:19,545 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:19,545 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:19,550 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:19,556 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:19,556 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:19,557 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:19,557 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:19,557 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:19,557 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-10-22 09:00:19,558 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:19,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:19,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,584 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:00:19,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:19,628 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 [2019-10-22 09:00:19,628 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-10-22 09:00:19,658 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2019-10-22 09:00:19,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 09:00:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:00:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-10-22 09:00:19,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 09:00:19,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:19,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 09:00:19,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:19,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 09:00:19,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:19,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-10-22 09:00:19,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:19,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2019-10-22 09:00:19,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 09:00:19,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-10-22 09:00:19,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-10-22 09:00:19,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:19,664 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-10-22 09:00:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-10-22 09:00:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-10-22 09:00:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 09:00:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-10-22 09:00:19,667 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-10-22 09:00:19,668 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-10-22 09:00:19,668 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:00:19,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-10-22 09:00:19,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:19,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:19,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:19,669 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 09:00:19,669 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:19,669 INFO L791 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 148#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 163#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2019-10-22 09:00:19,669 INFO L793 eck$LassoCheckResult]: Loop: 149#L16 assume !(main_~y~0 > main_~z~0); 150#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 157#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2019-10-22 09:00:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:19,670 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-10-22 09:00:19,670 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:19,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121306982] [2019-10-22 09:00:19,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:19,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:19,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:19,684 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-10-22 09:00:19,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:19,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346705538] [2019-10-22 09:00:19,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:19,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:19,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:19,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346705538] [2019-10-22 09:00:19,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:19,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:19,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808182130] [2019-10-22 09:00:19,717 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:00:19,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:19,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:19,721 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-10-22 09:00:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:19,752 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-10-22 09:00:19,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:19,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-10-22 09:00:19,753 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:19,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-10-22 09:00:19,754 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:00:19,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:00:19,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:00:19,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:19,754 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:19,754 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:19,754 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:19,754 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:00:19,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:19,755 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:19,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:00:19,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:00:19 BoogieIcfgContainer [2019-10-22 09:00:19,763 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:00:19,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:19,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:19,763 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:19,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:17" (3/4) ... [2019-10-22 09:00:19,766 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:00:19,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:19,768 INFO L168 Benchmark]: Toolchain (without parser) took 2361.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 983.8 MB in the end (delta: -39.1 MB). Peak memory consumption was 106.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:19,768 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:19,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:19,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.49 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. [2019-10-22 09:00:19,769 INFO L168 Benchmark]: Boogie Preprocessor took 11.91 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. [2019-10-22 09:00:19,770 INFO L168 Benchmark]: RCFGBuilder took 215.21 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:19,770 INFO L168 Benchmark]: BuchiAutomizer took 1871.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 983.8 MB in the end (delta: 138.3 MB). Peak memory consumption was 138.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:19,771 INFO L168 Benchmark]: Witness Printer took 3.21 ms. Allocated memory is still 1.2 GB. Free memory is still 983.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:19,773 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 227.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.49 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 11.91 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 215.21 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1871.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 983.8 MB in the end (delta: 138.3 MB). Peak memory consumption was 138.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.21 ms. Allocated memory is still 1.2 GB. Free memory is still 983.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...