./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.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_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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 56facc094037ea8aa088ee9a4faafddcfe652feb .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:43:04,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:43:04,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:43:04,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:43:04,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:43:04,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:43:04,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:43:04,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:43:04,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:43:04,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:43:04,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:43:04,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:43:04,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:43:04,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:43:04,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:43:04,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:43:04,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:43:04,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:43:04,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:43:04,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:43:04,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:43:04,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:43:04,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:43:04,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:43:04,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:43:04,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:43:04,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:43:04,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:43:04,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:43:04,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:43:04,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:43:04,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:43:04,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:43:04,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:43:04,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:43:04,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:43:04,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:43:04,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:43:04,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:43:04,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:43:04,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:43:04,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:43:04,598 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:43:04,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:43:04,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:43:04,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:43:04,600 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:43:04,600 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:43:04,600 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:43:04,600 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:43:04,601 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:43:04,601 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:43:04,601 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:43:04,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:43:04,602 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:43:04,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:43:04,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:43:04,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:43:04,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:43:04,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:43:04,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:43:04,603 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:43:04,604 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:43:04,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:43:04,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:43:04,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:43:04,605 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:43:04,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:43:04,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:43:04,605 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:43:04,606 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:43:04,606 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_1583cf52-6992-4787-8b24-65880d57bba0/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 -> 56facc094037ea8aa088ee9a4faafddcfe652feb [2019-11-15 23:43:04,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:43:04,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:43:04,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:43:04,664 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:43:04,664 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:43:04,665 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/twisted.c [2019-11-15 23:43:04,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/data/013b8de7a/3043d8a105d249f695d69fa9d0e52786/FLAG5318f70d6 [2019-11-15 23:43:05,132 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:43:05,133 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/sv-benchmarks/c/termination-numeric/twisted.c [2019-11-15 23:43:05,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/data/013b8de7a/3043d8a105d249f695d69fa9d0e52786/FLAG5318f70d6 [2019-11-15 23:43:05,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/bin/uautomizer/data/013b8de7a/3043d8a105d249f695d69fa9d0e52786 [2019-11-15 23:43:05,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:43:05,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:43:05,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:43:05,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:43:05,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:43:05,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226dc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05, skipping insertion in model container [2019-11-15 23:43:05,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,171 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:43:05,186 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:43:05,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:43:05,442 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:43:05,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:43:05,472 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:43:05,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05 WrapperNode [2019-11-15 23:43:05,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:43:05,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:43:05,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:43:05,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:43:05,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:43:05,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:43:05,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:43:05,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:43:05,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... [2019-11-15 23:43:05,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:43:05,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:43:05,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:43:05,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:43:05,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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 23:43:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:43:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:43:05,775 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:43:05,775 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-15 23:43:05,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:43:05 BoogieIcfgContainer [2019-11-15 23:43:05,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:43:05,777 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:43:05,777 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:43:05,780 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:43:05,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:43:05,781 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:43:05" (1/3) ... [2019-11-15 23:43:05,782 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ba950f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:43:05, skipping insertion in model container [2019-11-15 23:43:05,782 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:43:05,782 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:43:05" (2/3) ... [2019-11-15 23:43:05,783 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ba950f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:43:05, skipping insertion in model container [2019-11-15 23:43:05,783 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:43:05,783 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:43:05" (3/3) ... [2019-11-15 23:43:05,784 INFO L371 chiAutomizerObserver]: Analyzing ICFG twisted.c [2019-11-15 23:43:05,826 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:43:05,826 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:43:05,827 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:43:05,827 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:43:05,827 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:43:05,827 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:43:05,827 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:43:05,828 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:43:05,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-15 23:43:05,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-15 23:43:05,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:43:05,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:43:05,865 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:43:05,866 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-15 23:43:05,866 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:43:05,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-15 23:43:05,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-15 23:43:05,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:43:05,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:43:05,868 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:43:05,868 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-15 23:43:05,875 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 8#L18true [2019-11-15 23:43:05,875 INFO L793 eck$LassoCheckResult]: Loop: 8#L18true assume !true; 9#L13true goto; 5#L16true assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 3#L15true assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 8#L18true [2019-11-15 23:43:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:05,881 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 23:43:05,889 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:05,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608405226] [2019-11-15 23:43:05,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:05,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:05,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:05,991 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:43:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:05,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1450986, now seen corresponding path program 1 times [2019-11-15 23:43:05,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:05,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441557828] [2019-11-15 23:43:05,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:05,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:05,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:43:06,012 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 23:43:06,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441557828] [2019-11-15 23:43:06,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:43:06,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-15 23:43:06,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957172445] [2019-11-15 23:43:06,016 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 23:43:06,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:43:06,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:43:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:43:06,030 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-15 23:43:06,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:43:06,036 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2019-11-15 23:43:06,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:43:06,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2019-11-15 23:43:06,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-15 23:43:06,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 7 states and 10 transitions. [2019-11-15 23:43:06,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 23:43:06,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-15 23:43:06,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-15 23:43:06,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:43:06,044 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:43:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-15 23:43:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-15 23:43:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 23:43:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-15 23:43:06,066 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:43:06,066 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:43:06,066 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:43:06,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-15 23:43:06,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-15 23:43:06,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:43:06,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:43:06,067 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:43:06,067 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-15 23:43:06,068 INFO L791 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 34#L18 [2019-11-15 23:43:06,068 INFO L793 eck$LassoCheckResult]: Loop: 34#L18 goto; 36#L9 assume !(f_~i~0 < f_~k); 37#L13 goto; 33#L16 assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 32#L15 assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 34#L18 [2019-11-15 23:43:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:06,068 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-15 23:43:06,068 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:06,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753210395] [2019-11-15 23:43:06,069 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,069 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,078 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:43:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:06,078 INFO L82 PathProgramCache]: Analyzing trace with hash 33506102, now seen corresponding path program 1 times [2019-11-15 23:43:06,078 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:06,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026450337] [2019-11-15 23:43:06,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,108 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:43:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash 921009783, now seen corresponding path program 1 times [2019-11-15 23:43:06,109 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:06,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627134277] [2019-11-15 23:43:06,109 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,109 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,129 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:43:06,201 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:43:06,201 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:43:06,201 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:43:06,201 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:43:06,202 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:43:06,202 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:43:06,202 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:43:06,202 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:43:06,202 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2019-11-15 23:43:06,202 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:43:06,203 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:43:06,219 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 23:43:06,225 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 23:43:06,237 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 23:43:06,373 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:43:06,374 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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 23:43:06,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:43:06,389 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 23:43:06,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:43:06,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post1=0} Honda state: {ULTIMATE.start_f_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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 [2019-11-15 23:43:06,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:43:06,409 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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 23:43:06,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:43:06,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:43:06,554 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:43:06,555 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:43:06,555 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:43:06,556 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:43:06,556 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:43:06,556 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:43:06,556 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:43:06,556 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:43:06,556 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:43:06,556 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2019-11-15 23:43:06,556 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:43:06,557 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:43:06,558 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 23:43:06,571 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 23:43:06,576 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 23:43:06,683 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:43:06,688 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:43:06,690 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 23:43:06,691 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:43:06,691 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:43:06,692 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:43:06,692 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:43:06,692 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:43:06,695 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:43:06,695 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:43:06,729 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:43:06,737 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 23:43:06,737 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:43:06,739 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:43:06,739 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:43:06,740 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:43:06,749 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0, ULTIMATE.start_f_~l) = -1*ULTIMATE.start_f_~j~0 + 1*ULTIMATE.start_f_~l Supporting invariants [] [2019-11-15 23:43:06,751 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:43:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:43:06,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:43:06,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:43:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:43:06,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:43:06,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:43:06,835 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 23:43:06,838 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 23:43:06,839 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-15 23:43:06,871 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 15 states and 22 transitions. Complement of second has 4 states. [2019-11-15 23:43:06,872 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 23:43:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:43:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-15 23:43:06,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2019-11-15 23:43:06,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:43:06,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2019-11-15 23:43:06,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:43:06,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2019-11-15 23:43:06,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:43:06,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2019-11-15 23:43:06,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:43:06,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 17 transitions. [2019-11-15 23:43:06,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-15 23:43:06,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 23:43:06,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-15 23:43:06,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:43:06,883 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-15 23:43:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-15 23:43:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-15 23:43:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 23:43:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-15 23:43:06,885 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 23:43:06,886 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 23:43:06,886 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:43:06,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-15 23:43:06,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:43:06,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:43:06,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:43:06,888 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:43:06,888 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:43:06,888 INFO L791 eck$LassoCheckResult]: Stem: 96#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 97#L18 goto; 98#L9 [2019-11-15 23:43:06,888 INFO L793 eck$LassoCheckResult]: Loop: 98#L9 assume !!(f_~i~0 < f_~k);f_#t~post0 := f_~i~0;f_~i~0 := 1 + f_#t~post0;havoc f_#t~post0; 101#L8 assume 0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2); 98#L9 [2019-11-15 23:43:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:06,888 INFO L82 PathProgramCache]: Analyzing trace with hash 997, now seen corresponding path program 1 times [2019-11-15 23:43:06,889 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:06,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839815000] [2019-11-15 23:43:06,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,905 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:43:06,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:06,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-15 23:43:06,906 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:06,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541704516] [2019-11-15 23:43:06,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,934 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:43:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:06,934 INFO L82 PathProgramCache]: Analyzing trace with hash 958440, now seen corresponding path program 1 times [2019-11-15 23:43:06,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:43:06,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844643144] [2019-11-15 23:43:06,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:43:06,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:43:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:43:06,949 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:43:06,972 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:43:06,972 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:43:06,972 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:43:06,972 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:43:06,973 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:43:06,973 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:43:06,973 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:43:06,973 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:43:06,973 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2019-11-15 23:43:06,973 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:43:06,973 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:43:06,974 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 23:43:06,977 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 23:43:07,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:43:07,076 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:43:07,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:43:07,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:43:07,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:43:07,101 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0=0} Honda state: {ULTIMATE.start_f_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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 23:43:07,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:43:07,114 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1583cf52-6992-4787-8b24-65880d57bba0/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) [2019-11-15 23:43:07,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:43:07,134 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:43:07,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:43:07,354 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:43:07,355 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:43:07,355 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:43:07,355 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:43:07,355 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:43:07,355 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:43:07,355 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:43:07,355 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:43:07,355 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2019-11-15 23:43:07,355 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:43:07,355 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:43:07,357 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 23:43:07,373 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 23:43:07,459 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:43:07,459 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:43:07,459 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 23:43:07,460 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:43:07,460 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:43:07,460 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:43:07,460 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:43:07,460 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:43:07,461 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:43:07,461 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:43:07,479 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:43:07,490 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 23:43:07,495 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:43:07,495 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:43:07,495 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:43:07,496 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:43:07,496 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~i~0, ULTIMATE.start_f_~k) = -1*ULTIMATE.start_f_~i~0 + 1*ULTIMATE.start_f_~k Supporting invariants [] [2019-11-15 23:43:07,496 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:43:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:43:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:43:07,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:43:07,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:43:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:43:07,534 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:43:07,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:43:07,549 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 23:43:07,549 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 23:43:07,550 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-15 23:43:07,576 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 21 states and 31 transitions. Complement of second has 4 states. [2019-11-15 23:43:07,578 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 23:43:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:43:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-11-15 23:43:07,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-15 23:43:07,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:43:07,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:43:07,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:43:07,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-15 23:43:07,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:43:07,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 31 transitions. [2019-11-15 23:43:07,581 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:43:07,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-11-15 23:43:07,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:43:07,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:43:07,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:43:07,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:43:07,582 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:43:07,582 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:43:07,582 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:43:07,582 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:43:07,582 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:43:07,582 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:43:07,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:43:07,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:43:07 BoogieIcfgContainer [2019-11-15 23:43:07,592 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:43:07,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:43:07,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:43:07,593 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:43:07,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:43:05" (3/4) ... [2019-11-15 23:43:07,597 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:43:07,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:43:07,601 INFO L168 Benchmark]: Toolchain (without parser) took 2443.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -93.7 MB). Peak memory consumption was 108.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:43:07,602 INFO L168 Benchmark]: CDTParser took 0.25 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 23:43:07,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -253.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:43:07,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:43:07,604 INFO L168 Benchmark]: Boogie Preprocessor took 31.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:43:07,605 INFO L168 Benchmark]: RCFGBuilder took 236.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:43:07,606 INFO L168 Benchmark]: BuchiAutomizer took 1815.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 141.5 MB). Peak memory consumption was 141.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:43:07,610 INFO L168 Benchmark]: Witness Printer took 4.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:43:07,616 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 317.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -253.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 236.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1815.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 141.5 MB). Peak memory consumption was 141.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * j + l and consists of 3 locations. One deterministic module has affine ranking function -1 * i + k and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 11 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital33 mio100 ax100 hnf98 lsp88 ukn100 mio100 lsp100 div215 bol100 ite119 ukn100 eq149 hnf62 smp43 dnf100 smp100 tf106 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 51ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...