./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/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 31d0c4253184c01eb9f9573658b07bed7aa94585 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:27:38,388 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:27:38,389 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:27:38,395 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:27:38,396 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:27:38,396 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:27:38,397 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:27:38,398 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:27:38,400 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:27:38,400 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:27:38,401 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:27:38,401 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:27:38,402 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:27:38,402 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:27:38,403 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:27:38,403 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:27:38,404 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:27:38,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:27:38,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:27:38,407 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:27:38,408 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:27:38,409 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:27:38,411 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:27:38,411 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:27:38,411 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:27:38,412 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:27:38,412 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:27:38,413 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:27:38,414 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:27:38,414 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:27:38,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:27:38,415 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:27:38,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:27:38,415 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:27:38,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:27:38,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:27:38,416 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 09:27:38,425 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:27:38,425 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:27:38,426 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:27:38,427 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:27:38,427 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:27:38,427 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 09:27:38,427 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 09:27:38,427 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 09:27:38,427 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 09:27:38,427 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 09:27:38,428 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 09:27:38,428 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:27:38,428 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:27:38,428 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:27:38,428 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:27:38,428 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 09:27:38,429 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 09:27:38,429 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 09:27:38,429 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:27:38,429 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 09:27:38,429 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:27:38,429 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 09:27:38,430 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:27:38,430 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:27:38,430 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 09:27:38,430 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:27:38,430 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:27:38,430 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 09:27:38,431 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 09:27:38,431 INFO L133 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_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/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 -> 31d0c4253184c01eb9f9573658b07bed7aa94585 [2018-11-18 09:27:38,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:27:38,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:27:38,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:27:38,463 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:27:38,463 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:27:38,464 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c [2018-11-18 09:27:38,499 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/data/0e3b7595c/ba53e0a70efc42b0a9fa294bcfe2212a/FLAG8272698fe [2018-11-18 09:27:38,890 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:27:38,890 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2_true-termination_true-no-overflow.c [2018-11-18 09:27:38,894 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/data/0e3b7595c/ba53e0a70efc42b0a9fa294bcfe2212a/FLAG8272698fe [2018-11-18 09:27:38,905 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/data/0e3b7595c/ba53e0a70efc42b0a9fa294bcfe2212a [2018-11-18 09:27:38,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:27:38,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:27:38,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:27:38,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:27:38,911 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:27:38,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:27:38" (1/1) ... [2018-11-18 09:27:38,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:38, skipping insertion in model container [2018-11-18 09:27:38,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:27:38" (1/1) ... [2018-11-18 09:27:38,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:27:38,929 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:27:39,031 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:27:39,033 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:27:39,041 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:27:39,049 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:27:39,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39 WrapperNode [2018-11-18 09:27:39,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:27:39,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:27:39,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:27:39,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:27:39,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:27:39,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:27:39,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:27:39,069 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:27:39,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... [2018-11-18 09:27:39,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:27:39,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:27:39,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:27:39,081 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:27:39,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/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 [2018-11-18 09:27:39,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:27:39,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:27:39,264 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:27:39,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:27:39 BoogieIcfgContainer [2018-11-18 09:27:39,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:27:39,265 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 09:27:39,265 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 09:27:39,268 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 09:27:39,269 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:27:39,269 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:27:38" (1/3) ... [2018-11-18 09:27:39,270 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ceb70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:27:39, skipping insertion in model container [2018-11-18 09:27:39,270 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:27:39,271 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:27:39" (2/3) ... [2018-11-18 09:27:39,271 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ceb70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:27:39, skipping insertion in model container [2018-11-18 09:27:39,271 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:27:39,271 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:27:39" (3/3) ... [2018-11-18 09:27:39,273 INFO L375 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2_true-termination_true-no-overflow.c [2018-11-18 09:27:39,324 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:27:39,324 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 09:27:39,325 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 09:27:39,325 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 09:27:39,325 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:27:39,325 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:27:39,325 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 09:27:39,325 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:27:39,325 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 09:27:39,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 09:27:39,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 09:27:39,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,360 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,360 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:27:39,360 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 09:27:39,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 09:27:39,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 09:27:39,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,362 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,362 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:27:39,368 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L19-3true [2018-11-18 09:27:39,369 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-3true assume true; 10#L19-1true assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 11#L21-3true assume !true; 8#L21-4true main_~x1~0 := 1 + main_~x1~0; 7#L19-3true [2018-11-18 09:27:39,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 09:27:39,376 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:39,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-18 09:27:39,453 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:39,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:27:39,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:27:39,477 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:39,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:27:39,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:27:39,487 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-18 09:27:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:39,491 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 09:27:39,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:27:39,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 09:27:39,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 09:27:39,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-18 09:27:39,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 09:27:39,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 09:27:39,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-18 09:27:39,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:39,497 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 09:27:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-18 09:27:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-18 09:27:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 09:27:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-18 09:27:39,520 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 09:27:39,520 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 09:27:39,520 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 09:27:39,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-18 09:27:39,520 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 09:27:39,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,521 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,521 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 09:27:39,521 INFO L794 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 31#L19-3 [2018-11-18 09:27:39,521 INFO L796 eck$LassoCheckResult]: Loop: 31#L19-3 assume true; 33#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 35#L21-3 assume true; 36#L21-1 assume !(main_~x2~0 > 1); 34#L21-4 main_~x1~0 := 1 + main_~x1~0; 31#L19-3 [2018-11-18 09:27:39,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 09:27:39,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:39,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,526 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-18 09:27:39,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:27:39,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:27:39,557 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:39,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:27:39,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:27:39,558 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-18 09:27:39,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:39,564 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-11-18 09:27:39,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:27:39,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-11-18 09:27:39,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 09:27:39,566 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2018-11-18 09:27:39,566 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-18 09:27:39,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-18 09:27:39,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2018-11-18 09:27:39,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:39,567 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 09:27:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2018-11-18 09:27:39,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-11-18 09:27:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 09:27:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-18 09:27:39,568 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 09:27:39,568 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 09:27:39,568 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 09:27:39,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-18 09:27:39,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 09:27:39,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,569 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,569 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-18 09:27:39,569 INFO L794 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 52#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 53#L19-3 [2018-11-18 09:27:39,569 INFO L796 eck$LassoCheckResult]: Loop: 53#L19-3 assume true; 55#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 57#L21-3 assume true; 58#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 59#L21-3 assume true; 60#L21-1 assume !(main_~x2~0 > 1); 56#L21-4 main_~x1~0 := 1 + main_~x1~0; 53#L19-3 [2018-11-18 09:27:39,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,569 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-18 09:27:39,569 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:39,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1163104599, now seen corresponding path program 1 times [2018-11-18 09:27:39,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:39,600 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:39,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:39,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:39,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 09:27:39,646 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:39,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:27:39,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:27:39,646 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 09:27:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:39,660 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 09:27:39,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:27:39,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 09:27:39,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 09:27:39,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2018-11-18 09:27:39,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 09:27:39,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 09:27:39,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2018-11-18 09:27:39,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:39,661 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 09:27:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2018-11-18 09:27:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 09:27:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 09:27:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-11-18 09:27:39,663 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 09:27:39,663 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 09:27:39,663 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 09:27:39,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2018-11-18 09:27:39,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 09:27:39,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,664 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,664 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1, 1] [2018-11-18 09:27:39,664 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 97#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 98#L19-3 [2018-11-18 09:27:39,664 INFO L796 eck$LassoCheckResult]: Loop: 98#L19-3 assume true; 100#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 102#L21-3 assume true; 103#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 104#L21-3 assume true; 107#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 106#L21-3 assume true; 105#L21-1 assume !(main_~x2~0 > 1); 101#L21-4 main_~x1~0 := 1 + main_~x1~0; 98#L19-3 [2018-11-18 09:27:39,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,664 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2018-11-18 09:27:39,664 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:39,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1051972061, now seen corresponding path program 2 times [2018-11-18 09:27:39,667 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:39,691 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:39,698 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:27:39,708 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:27:39,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:27:39,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:39,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 09:27:39,730 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:39,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:27:39,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:27:39,730 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-11-18 09:27:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:39,742 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-11-18 09:27:39,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:27:39,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2018-11-18 09:27:39,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-18 09:27:39,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2018-11-18 09:27:39,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 09:27:39,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 09:27:39,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2018-11-18 09:27:39,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:39,743 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 09:27:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2018-11-18 09:27:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 09:27:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 09:27:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-18 09:27:39,745 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 09:27:39,745 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 09:27:39,745 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 09:27:39,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2018-11-18 09:27:39,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-18 09:27:39,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,746 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,746 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 1, 1, 1, 1] [2018-11-18 09:27:39,746 INFO L794 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 153#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 154#L19-3 [2018-11-18 09:27:39,746 INFO L796 eck$LassoCheckResult]: Loop: 154#L19-3 assume true; 156#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 158#L21-3 assume true; 161#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 159#L21-3 assume true; 160#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 165#L21-3 assume true; 164#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 163#L21-3 assume true; 162#L21-1 assume !(main_~x2~0 > 1); 157#L21-4 main_~x1~0 := 1 + main_~x1~0; 154#L19-3 [2018-11-18 09:27:39,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,746 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2018-11-18 09:27:39,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1627785443, now seen corresponding path program 3 times [2018-11-18 09:27:39,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:39,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:39,804 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 09:27:39,828 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 09:27:39,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:27:39,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:39,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 09:27:39,848 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:27:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:27:39,849 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2018-11-18 09:27:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:39,865 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-11-18 09:27:39,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:27:39,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 16 transitions. [2018-11-18 09:27:39,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2018-11-18 09:27:39,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 16 transitions. [2018-11-18 09:27:39,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-18 09:27:39,867 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-18 09:27:39,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 16 transitions. [2018-11-18 09:27:39,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:39,867 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 09:27:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 16 transitions. [2018-11-18 09:27:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 09:27:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 09:27:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-18 09:27:39,869 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 09:27:39,869 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 09:27:39,869 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 09:27:39,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2018-11-18 09:27:39,869 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2018-11-18 09:27:39,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,869 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,870 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 1, 1, 1, 1] [2018-11-18 09:27:39,870 INFO L794 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 220#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 221#L19-3 [2018-11-18 09:27:39,870 INFO L796 eck$LassoCheckResult]: Loop: 221#L19-3 assume true; 223#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 225#L21-3 assume true; 228#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 226#L21-3 assume true; 227#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 234#L21-3 assume true; 233#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 232#L21-3 assume true; 231#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 230#L21-3 assume true; 229#L21-1 assume !(main_~x2~0 > 1); 224#L21-4 main_~x1~0 := 1 + main_~x1~0; 221#L19-3 [2018-11-18 09:27:39,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,870 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2018-11-18 09:27:39,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash -933664361, now seen corresponding path program 4 times [2018-11-18 09:27:39,873 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:39,933 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:39,941 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 09:27:39,946 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 09:27:39,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:27:39,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:39,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:39,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 09:27:39,966 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 09:27:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:27:39,966 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 2 Second operand 7 states. [2018-11-18 09:27:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:39,989 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-11-18 09:27:39,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 09:27:39,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 18 transitions. [2018-11-18 09:27:39,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2018-11-18 09:27:39,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 09:27:39,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-18 09:27:39,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-18 09:27:39,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2018-11-18 09:27:39,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:39,991 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 09:27:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2018-11-18 09:27:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 09:27:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 09:27:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 09:27:39,992 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 09:27:39,993 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 09:27:39,993 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 09:27:39,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 18 transitions. [2018-11-18 09:27:39,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2018-11-18 09:27:39,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:39,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:39,993 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:39,993 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 1, 1, 1, 1] [2018-11-18 09:27:39,993 INFO L794 eck$LassoCheckResult]: Stem: 300#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 298#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 299#L19-3 [2018-11-18 09:27:39,993 INFO L796 eck$LassoCheckResult]: Loop: 299#L19-3 assume true; 301#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 305#L21-3 assume true; 306#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 303#L21-3 assume true; 304#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 314#L21-3 assume true; 313#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 312#L21-3 assume true; 311#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 310#L21-3 assume true; 309#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 308#L21-3 assume true; 307#L21-1 assume !(main_~x2~0 > 1); 302#L21-4 main_~x1~0 := 1 + main_~x1~0; 299#L19-3 [2018-11-18 09:27:39,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2018-11-18 09:27:39,994 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:39,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:39,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:39,996 INFO L82 PathProgramCache]: Analyzing trace with hash 396764561, now seen corresponding path program 5 times [2018-11-18 09:27:39,996 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:39,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:39,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:39,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:39,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:40,044 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:40,051 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 09:27:40,057 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 09:27:40,057 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:27:40,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,087 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:40,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 09:27:40,087 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:40,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:27:40,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:27:40,088 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. cyclomatic complexity: 2 Second operand 8 states. [2018-11-18 09:27:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:40,108 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-18 09:27:40,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 09:27:40,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2018-11-18 09:27:40,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-11-18 09:27:40,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 09:27:40,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-18 09:27:40,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-18 09:27:40,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2018-11-18 09:27:40,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:40,110 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 09:27:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2018-11-18 09:27:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 09:27:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 09:27:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 09:27:40,111 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 09:27:40,111 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 09:27:40,112 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 09:27:40,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 20 transitions. [2018-11-18 09:27:40,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-11-18 09:27:40,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:40,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:40,112 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:40,113 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 1, 1, 1, 1] [2018-11-18 09:27:40,113 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 387#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 388#L19-3 [2018-11-18 09:27:40,113 INFO L796 eck$LassoCheckResult]: Loop: 388#L19-3 assume true; 390#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 394#L21-3 assume true; 395#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 392#L21-3 assume true; 393#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 405#L21-3 assume true; 404#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 403#L21-3 assume true; 402#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 401#L21-3 assume true; 400#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 399#L21-3 assume true; 398#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 397#L21-3 assume true; 396#L21-1 assume !(main_~x2~0 > 1); 391#L21-4 main_~x1~0 := 1 + main_~x1~0; 388#L19-3 [2018-11-18 09:27:40,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2018-11-18 09:27:40,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash -961295605, now seen corresponding path program 6 times [2018-11-18 09:27:40,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:40,170 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:40,176 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 09:27:40,181 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 09:27:40,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:27:40,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:40,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 09:27:40,203 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:40,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:27:40,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:27:40,204 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. cyclomatic complexity: 2 Second operand 9 states. [2018-11-18 09:27:40,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:40,213 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-18 09:27:40,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:27:40,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 22 transitions. [2018-11-18 09:27:40,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-11-18 09:27:40,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 22 transitions. [2018-11-18 09:27:40,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2018-11-18 09:27:40,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-18 09:27:40,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 22 transitions. [2018-11-18 09:27:40,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:40,216 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 09:27:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 22 transitions. [2018-11-18 09:27:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 09:27:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 09:27:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-18 09:27:40,218 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 09:27:40,218 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-18 09:27:40,218 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-18 09:27:40,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2018-11-18 09:27:40,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-11-18 09:27:40,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:40,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:40,219 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:40,219 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 1, 1, 1, 1] [2018-11-18 09:27:40,219 INFO L794 eck$LassoCheckResult]: Stem: 489#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 487#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 488#L19-3 [2018-11-18 09:27:40,219 INFO L796 eck$LassoCheckResult]: Loop: 488#L19-3 assume true; 490#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 494#L21-3 assume true; 495#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 492#L21-3 assume true; 493#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 507#L21-3 assume true; 506#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 505#L21-3 assume true; 504#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 503#L21-3 assume true; 502#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 501#L21-3 assume true; 500#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 499#L21-3 assume true; 498#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 497#L21-3 assume true; 496#L21-1 assume !(main_~x2~0 > 1); 491#L21-4 main_~x1~0 := 1 + main_~x1~0; 488#L19-3 [2018-11-18 09:27:40,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,219 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2018-11-18 09:27:40,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,223 INFO L82 PathProgramCache]: Analyzing trace with hash -387057147, now seen corresponding path program 7 times [2018-11-18 09:27:40,223 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:40,297 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:40,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:40,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:40,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 09:27:40,338 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:40,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 09:27:40,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:27:40,338 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. cyclomatic complexity: 2 Second operand 10 states. [2018-11-18 09:27:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:40,358 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-18 09:27:40,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:27:40,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 24 transitions. [2018-11-18 09:27:40,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2018-11-18 09:27:40,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 24 transitions. [2018-11-18 09:27:40,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-18 09:27:40,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-18 09:27:40,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 24 transitions. [2018-11-18 09:27:40,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:40,361 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 09:27:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 24 transitions. [2018-11-18 09:27:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 09:27:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 09:27:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-18 09:27:40,363 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 09:27:40,363 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 09:27:40,363 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-18 09:27:40,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 24 transitions. [2018-11-18 09:27:40,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2018-11-18 09:27:40,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:40,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:40,364 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:40,364 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 1, 1, 1, 1] [2018-11-18 09:27:40,364 INFO L794 eck$LassoCheckResult]: Stem: 601#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 598#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 599#L19-3 [2018-11-18 09:27:40,364 INFO L796 eck$LassoCheckResult]: Loop: 599#L19-3 assume true; 600#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 603#L21-3 assume true; 606#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 604#L21-3 assume true; 605#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 620#L21-3 assume true; 619#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 618#L21-3 assume true; 617#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 616#L21-3 assume true; 615#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 614#L21-3 assume true; 613#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 612#L21-3 assume true; 611#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 610#L21-3 assume true; 609#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 608#L21-3 assume true; 607#L21-1 assume !(main_~x2~0 > 1); 602#L21-4 main_~x1~0 := 1 + main_~x1~0; 599#L19-3 [2018-11-18 09:27:40,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,364 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2018-11-18 09:27:40,365 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:40,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1700287103, now seen corresponding path program 8 times [2018-11-18 09:27:40,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:27:40,445 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:27:40,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:27:40,464 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:27:40,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:27:40,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:40,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:27:40,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-18 09:27:40,493 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 09:27:40,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 09:27:40,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:27:40,494 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. cyclomatic complexity: 2 Second operand 11 states. [2018-11-18 09:27:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:27:40,526 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-18 09:27:40,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:27:40,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 26 transitions. [2018-11-18 09:27:40,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2018-11-18 09:27:40,527 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 26 transitions. [2018-11-18 09:27:40,527 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-18 09:27:40,527 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-11-18 09:27:40,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 26 transitions. [2018-11-18 09:27:40,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:40,527 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 09:27:40,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 26 transitions. [2018-11-18 09:27:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-18 09:27:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 09:27:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-18 09:27:40,529 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 09:27:40,529 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 09:27:40,529 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-18 09:27:40,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2018-11-18 09:27:40,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2018-11-18 09:27:40,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:40,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:40,530 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:27:40,530 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 1, 1, 1, 1] [2018-11-18 09:27:40,530 INFO L794 eck$LassoCheckResult]: Stem: 722#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 720#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 721#L19-3 [2018-11-18 09:27:40,530 INFO L796 eck$LassoCheckResult]: Loop: 721#L19-3 assume true; 723#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 727#L21-3 assume true; 728#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 725#L21-3 assume true; 726#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 744#L21-3 assume true; 743#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 742#L21-3 assume true; 741#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 740#L21-3 assume true; 739#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 738#L21-3 assume true; 737#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 736#L21-3 assume true; 735#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 734#L21-3 assume true; 733#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 732#L21-3 assume true; 731#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 730#L21-3 assume true; 729#L21-1 assume !(main_~x2~0 > 1); 724#L21-4 main_~x1~0 := 1 + main_~x1~0; 721#L19-3 [2018-11-18 09:27:40,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2018-11-18 09:27:40,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1888384121, now seen corresponding path program 9 times [2018-11-18 09:27:40,533 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1852397175, now seen corresponding path program 1 times [2018-11-18 09:27:40,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:40,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:40,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:40,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:40,633 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:27:40,634 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:27:40,634 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:27:40,634 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:27:40,634 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:27:40,635 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:40,635 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:27:40,635 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:27:40,635 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2_true-termination_true-no-overflow.c_Iteration11_Loop [2018-11-18 09:27:40,635 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:27:40,635 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:27:40,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,713 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:27:40,713 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:40,716 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:40,716 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:40,734 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:27:40,734 INFO L448 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_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:40,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:40,737 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:40,752 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:27:40,752 INFO L448 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_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:40,761 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:40,761 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:40,778 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:27:40,779 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:40,820 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:27:40,821 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:27:40,821 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:27:40,821 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:27:40,821 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:27:40,821 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:27:40,821 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:40,821 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:27:40,822 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:27:40,822 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2_true-termination_true-no-overflow.c_Iteration11_Loop [2018-11-18 09:27:40,822 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:27:40,822 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:27:40,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:40,894 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:27:40,899 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:27:40,900 INFO L122 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 [2018-11-18 09:27:40,902 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:40,902 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:40,902 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:40,902 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:40,905 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:27:40,906 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:27:40,908 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:27:40,909 INFO L122 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 [2018-11-18 09:27:40,909 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:40,909 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:40,909 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:40,909 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:40,911 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:27:40,911 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:27:40,913 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:27:40,913 INFO L122 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 [2018-11-18 09:27:40,914 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:40,914 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:27:40,914 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:40,915 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:40,915 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:40,915 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:27:40,915 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:27:40,918 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:27:40,920 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:27:40,920 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:27:40,922 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:27:40,922 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:27:40,922 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:27:40,923 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x1~0) = -2*ULTIMATE.start_main_~x1~0 + 21 Supporting invariants [] [2018-11-18 09:27:40,924 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:27:40,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:40,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:40,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-18 09:27:40,978 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 [2018-11-18 09:27:40,978 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 26 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 09:27:40,998 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 26 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 48 states and 51 transitions. Complement of second has 6 states. [2018-11-18 09:27:40,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 09:27:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:27:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 09:27:41,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 23 letters. [2018-11-18 09:27:41,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 25 letters. Loop has 23 letters. [2018-11-18 09:27:41,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 46 letters. [2018-11-18 09:27:41,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 51 transitions. [2018-11-18 09:27:41,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 09:27:41,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 47 states and 50 transitions. [2018-11-18 09:27:41,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-18 09:27:41,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-18 09:27:41,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 50 transitions. [2018-11-18 09:27:41,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:27:41,004 INFO L705 BuchiCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-11-18 09:27:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 50 transitions. [2018-11-18 09:27:41,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 29. [2018-11-18 09:27:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 09:27:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-11-18 09:27:41,006 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 09:27:41,006 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 09:27:41,006 INFO L442 BuchiCegarLoop]: ======== Iteration 12============ [2018-11-18 09:27:41,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 32 transitions. [2018-11-18 09:27:41,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 09:27:41,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:41,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:41,007 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 09:27:41,007 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 09:27:41,007 INFO L794 eck$LassoCheckResult]: Stem: 893#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 891#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 892#L19-3 assume true; 895#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 898#L21-3 [2018-11-18 09:27:41,007 INFO L796 eck$LassoCheckResult]: Loop: 898#L21-3 assume true; 900#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 898#L21-3 [2018-11-18 09:27:41,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,007 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-18 09:27:41,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:41,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:41,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:41,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-11-18 09:27:41,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:41,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:41,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:41,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-11-18 09:27:41,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:41,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:41,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:41,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,022 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:27:41,022 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:27:41,022 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:27:41,023 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:27:41,023 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:27:41,023 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,023 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:27:41,023 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:27:41,023 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2_true-termination_true-no-overflow.c_Iteration12_Loop [2018-11-18 09:27:41,023 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:27:41,023 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:27:41,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,069 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:27:41,069 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,071 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:41,071 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:41,086 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:27:41,086 INFO L448 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_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,089 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:41,089 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:41,104 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:27:41,104 INFO L448 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_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:41,107 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,126 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:27:41,126 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:41,145 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:27:41,146 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:27:41,146 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:27:41,147 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:27:41,147 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:27:41,147 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:27:41,147 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,147 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:27:41,147 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:27:41,147 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2_true-termination_true-no-overflow.c_Iteration12_Loop [2018-11-18 09:27:41,147 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:27:41,147 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:27:41,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,170 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:27:41,170 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:27:41,170 INFO L122 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 [2018-11-18 09:27:41,170 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:41,171 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:41,171 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:41,171 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:41,172 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:27:41,172 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:27:41,174 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:27:41,174 INFO L122 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 [2018-11-18 09:27:41,174 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:41,174 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:41,174 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:41,175 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:41,176 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:27:41,176 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:27:41,178 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:27:41,178 INFO L122 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 [2018-11-18 09:27:41,178 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:41,179 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:27:41,179 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:41,179 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:41,179 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:41,179 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:27:41,179 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:27:41,180 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:27:41,182 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:27:41,182 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:27:41,182 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:27:41,182 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:27:41,182 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:27:41,182 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0) = 1*ULTIMATE.start_main_~x2~0 Supporting invariants [] [2018-11-18 09:27:41,182 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:27:41,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:41,195 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 [2018-11-18 09:27:41,195 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 32 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 09:27:41,201 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 32 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 73 states and 79 transitions. Complement of second has 5 states. [2018-11-18 09:27:41,201 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 [2018-11-18 09:27:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:27:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 09:27:41,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-18 09:27:41,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-18 09:27:41,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 09:27:41,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 79 transitions. [2018-11-18 09:27:41,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 09:27:41,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 55 states and 59 transitions. [2018-11-18 09:27:41,204 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 09:27:41,204 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 09:27:41,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 59 transitions. [2018-11-18 09:27:41,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:27:41,204 INFO L705 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2018-11-18 09:27:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 59 transitions. [2018-11-18 09:27:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2018-11-18 09:27:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 09:27:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-11-18 09:27:41,207 INFO L728 BuchiCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-18 09:27:41,207 INFO L608 BuchiCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-18 09:27:41,207 INFO L442 BuchiCegarLoop]: ======== Iteration 13============ [2018-11-18 09:27:41,207 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 53 transitions. [2018-11-18 09:27:41,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 09:27:41,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:27:41,208 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:27:41,208 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 2, 2, 1, 1, 1, 1] [2018-11-18 09:27:41,208 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 09:27:41,208 INFO L794 eck$LassoCheckResult]: Stem: 1037#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1031#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 1032#L19-3 assume true; 1033#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 1080#L21-3 assume true; 1079#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1078#L21-3 assume true; 1076#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1074#L21-3 assume true; 1072#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1070#L21-3 assume true; 1068#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1066#L21-3 assume true; 1064#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1062#L21-3 assume true; 1060#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1058#L21-3 assume true; 1056#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1054#L21-3 assume true; 1052#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1050#L21-3 assume true; 1049#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1048#L21-3 assume true; 1044#L21-1 assume !(main_~x2~0 > 1); 1038#L21-4 main_~x1~0 := 1 + main_~x1~0; 1034#L19-3 assume true; 1036#L19-1 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 1039#L21-3 [2018-11-18 09:27:41,208 INFO L796 eck$LassoCheckResult]: Loop: 1039#L21-3 assume true; 1040#L21-1 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 1039#L21-3 [2018-11-18 09:27:41,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2037224829, now seen corresponding path program 2 times [2018-11-18 09:27:41,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:41,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:41,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:27:41,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-11-18 09:27:41,216 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:41,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:41,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:41,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,219 INFO L82 PathProgramCache]: Analyzing trace with hash -732025789, now seen corresponding path program 3 times [2018-11-18 09:27:41,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:27:41,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:27:41,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:27:41,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:27:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:27:41,239 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:27:41,239 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:27:41,239 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:27:41,239 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:27:41,239 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:27:41,239 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,240 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:27:41,240 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:27:41,240 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2_true-termination_true-no-overflow.c_Iteration13_Loop [2018-11-18 09:27:41,240 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:27:41,240 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:27:41,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,273 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:27:41,273 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,276 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:41,276 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:41,291 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:27:41,291 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:41,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:41,309 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:27:41,309 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,312 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:27:41,312 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d2c1ccf-3516-4197-82c9-fa1ba3bb1484/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,329 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:27:41,329 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:27:41,345 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:27:41,346 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:27:41,346 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:27:41,346 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:27:41,346 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:27:41,346 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:27:41,346 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:27:41,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:27:41,346 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:27:41,346 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2_true-termination_true-no-overflow.c_Iteration13_Loop [2018-11-18 09:27:41,346 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:27:41,346 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:27:41,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:27:41,384 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:27:41,384 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:27:41,385 INFO L122 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 [2018-11-18 09:27:41,385 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:41,385 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:41,385 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:41,385 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:41,386 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:27:41,386 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:27:41,388 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:27:41,389 INFO L122 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 [2018-11-18 09:27:41,389 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:41,389 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:41,389 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:41,390 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:41,390 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:27:41,391 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:27:41,392 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:27:41,392 INFO L122 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 [2018-11-18 09:27:41,392 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:27:41,393 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:27:41,393 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:27:41,393 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:27:41,393 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:27:41,393 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:27:41,393 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:27:41,395 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:27:41,396 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:27:41,396 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:27:41,396 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:27:41,396 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:27:41,397 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:27:41,397 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0) = 1*ULTIMATE.start_main_~x2~0 Supporting invariants [] [2018-11-18 09:27:41,397 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:27:41,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:41,439 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 [2018-11-18 09:27:41,439 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 09:27:41,446 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 68 states and 73 transitions. Complement of second has 5 states. [2018-11-18 09:27:41,447 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 [2018-11-18 09:27:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:27:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 09:27:41,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2018-11-18 09:27:41,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,447 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:27:41,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:41,472 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 09:27:41,472 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 09:27:41,477 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 68 states and 73 transitions. Complement of second has 5 states. [2018-11-18 09:27:41,480 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 [2018-11-18 09:27:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:27:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 09:27:41,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2018-11-18 09:27:41,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,480 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:27:41,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:27:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:27:41,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:27:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:27:41,499 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 09:27:41,499 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 09:27:41,506 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 53 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 76 states and 82 transitions. Complement of second has 4 states. [2018-11-18 09:27:41,507 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 [2018-11-18 09:27:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:27:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-18 09:27:41,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 27 letters. Loop has 2 letters. [2018-11-18 09:27:41,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 29 letters. Loop has 2 letters. [2018-11-18 09:27:41,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 27 letters. Loop has 4 letters. [2018-11-18 09:27:41,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:27:41,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 82 transitions. [2018-11-18 09:27:41,510 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:27:41,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 0 states and 0 transitions. [2018-11-18 09:27:41,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:27:41,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:27:41,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:27:41,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:27:41,511 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:27:41,511 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:27:41,511 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:27:41,511 INFO L442 BuchiCegarLoop]: ======== Iteration 14============ [2018-11-18 09:27:41,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:27:41,511 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:27:41,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 09:27:41,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:27:41 BoogieIcfgContainer [2018-11-18 09:27:41,517 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 09:27:41,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:27:41,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:27:41,517 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:27:41,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:27:39" (3/4) ... [2018-11-18 09:27:41,520 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:27:41,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:27:41,521 INFO L168 Benchmark]: Toolchain (without parser) took 2613.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -70.5 MB). Peak memory consumption was 64.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:41,522 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:27:41,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.84 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:41,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.01 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:41,523 INFO L168 Benchmark]: Boogie Preprocessor took 11.94 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:27:41,523 INFO L168 Benchmark]: RCFGBuilder took 183.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:41,524 INFO L168 Benchmark]: BuchiAutomizer took 2251.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.4 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:27:41,524 INFO L168 Benchmark]: Witness Printer took 3.52 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. [2018-11-18 09:27:41,527 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.84 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.01 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.94 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2251.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.4 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.52 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 13 terminating modules (10 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x1 + 21 and consists of 4 locations. One deterministic module has affine ranking function x2 and consists of 3 locations. One nondeterministic module has affine ranking function x2 and consists of 3 locations. 10 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 14 iterations. TraceHistogramMax:10. Analysis of lassos took 1.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 11. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 50 states and ocurred in iteration 12. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 90/90 HoareTripleCheckerStatistics: 117 SDtfs, 38 SDslu, 179 SDs, 0 SdLazy, 155 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI10 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax210 hnf100 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...