./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 32bit --witnessprinter.graph.data.programhash 73643ecf8e1581c13142517bcc63dc5d77c96d29 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 11:51:40,498 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:51:40,499 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:51:40,506 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:51:40,506 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:51:40,507 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:51:40,508 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:51:40,509 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:51:40,510 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:51:40,511 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:51:40,511 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:51:40,512 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:51:40,512 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:51:40,513 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:51:40,514 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:51:40,514 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:51:40,515 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:51:40,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:51:40,517 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:51:40,518 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:51:40,519 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:51:40,520 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:51:40,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:51:40,521 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:51:40,522 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:51:40,522 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:51:40,523 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:51:40,523 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:51:40,524 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:51:40,525 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:51:40,525 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:51:40,525 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:51:40,525 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:51:40,526 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:51:40,526 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:51:40,527 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:51:40,527 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-23 11:51:40,536 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:51:40,536 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:51:40,537 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 11:51:40,537 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 11:51:40,538 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 11:51:40,538 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 11:51:40,538 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 11:51:40,538 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 11:51:40,538 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 11:51:40,538 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 11:51:40,538 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 11:51:40,539 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:51:40,539 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:51:40,539 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 11:51:40,539 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 11:51:40,539 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:51:40,539 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:51:40,539 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 11:51:40,539 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 11:51:40,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:51:40,540 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 11:51:40,541 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:51:40,541 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 11:51:40,541 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 11:51:40,542 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 11:51:40,542 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_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73643ecf8e1581c13142517bcc63dc5d77c96d29 [2018-11-23 11:51:40,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:51:40,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:51:40,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:51:40,575 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:51:40,575 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:51:40,576 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-23 11:51:40,610 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/data/06ac259e6/98860390d3c64bc29d99729f38550a0b/FLAGf0cdc3534 [2018-11-23 11:51:41,017 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:51:41,018 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-23 11:51:41,021 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/data/06ac259e6/98860390d3c64bc29d99729f38550a0b/FLAGf0cdc3534 [2018-11-23 11:51:41,029 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/data/06ac259e6/98860390d3c64bc29d99729f38550a0b [2018-11-23 11:51:41,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:51:41,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:51:41,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:51:41,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:51:41,035 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:51:41,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735eaee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41, skipping insertion in model container [2018-11-23 11:51:41,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:51:41,055 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:51:41,149 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:51:41,152 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:51:41,161 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:51:41,169 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:51:41,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41 WrapperNode [2018-11-23 11:51:41,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:51:41,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:51:41,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:51:41,170 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:51:41,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:51:41,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:51:41,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:51:41,187 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:51:41,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... [2018-11-23 11:51:41,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:51:41,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:51:41,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:51:41,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:51:41,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:51:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:51:41,354 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:51:41,354 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-23 11:51:41,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:51:41 BoogieIcfgContainer [2018-11-23 11:51:41,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:51:41,355 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 11:51:41,355 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 11:51:41,357 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 11:51:41,358 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 11:51:41,358 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 11:51:41" (1/3) ... [2018-11-23 11:51:41,359 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ab5bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 11:51:41, skipping insertion in model container [2018-11-23 11:51:41,359 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 11:51:41,359 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:51:41" (2/3) ... [2018-11-23 11:51:41,360 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ab5bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 11:51:41, skipping insertion in model container [2018-11-23 11:51:41,360 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 11:51:41,360 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:51:41" (3/3) ... [2018-11-23 11:51:41,361 INFO L375 chiAutomizerObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-11-23 11:51:41,395 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 11:51:41,396 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 11:51:41,396 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 11:51:41,396 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 11:51:41,396 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:51:41,396 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:51:41,396 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 11:51:41,396 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:51:41,396 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 11:51:41,405 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-23 11:51:41,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 11:51:41,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:51:41,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:51:41,422 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 11:51:41,422 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 11:51:41,422 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 11:51:41,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-23 11:51:41,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 11:51:41,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:51:41,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:51:41,423 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 11:51:41,423 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 11:51:41,428 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L21-2true [2018-11-23 11:51:41,428 INFO L796 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L21true assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 10#L21-2true [2018-11-23 11:51:41,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 11:51:41,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:41,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:41,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:41,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:51:41,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:41,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-23 11:51:41,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:41,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:41,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:41,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:51:41,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:41,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-23 11:51:41,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:41,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:41,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:41,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:51:41,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:41,562 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:41,562 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:41,562 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:41,562 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:41,563 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 11:51:41,563 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:41,563 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:41,563 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:41,563 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration1_Loop [2018-11-23 11:51:41,563 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:41,563 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:41,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,721 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:41,722 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:41,725 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:41,725 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:41,742 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:41,742 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:41,745 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:41,745 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:41,756 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:41,756 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-191, ULTIMATE.start_main_#t~nondet3=-191} Honda state: {ULTIMATE.start_main_~tmp~0=-191, ULTIMATE.start_main_#t~nondet3=-191} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:41,771 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:41,771 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:41,788 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 11:51:41,788 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:41,806 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 11:51:41,807 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:41,807 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:41,807 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:41,807 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:41,807 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 11:51:41,807 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:41,807 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:41,808 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:41,808 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration1_Loop [2018-11-23 11:51:41,808 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:41,808 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:41,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:41,956 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:41,960 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 11:51:41,961 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 [2018-11-23 11:51:41,963 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:41,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:41,963 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:41,963 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:41,964 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:41,965 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:41,966 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:41,969 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 11:51:41,970 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 [2018-11-23 11:51:41,970 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:41,971 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:41,971 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:41,971 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:41,971 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:41,972 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:41,972 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:41,979 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 11:51:41,980 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 [2018-11-23 11:51:41,980 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:41,980 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:41,980 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:41,981 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:41,981 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:41,981 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:41,982 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:41,986 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 11:51:41,989 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 11:51:41,990 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 11:51:41,991 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 11:51:41,991 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 11:51:41,992 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 11:51:41,992 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-23 11:51:41,993 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 11:51:42,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:51:42,052 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 [2018-11-23 11:51:42,053 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2018-11-23 11:51:42,087 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 35 states and 45 transitions. Complement of second has 8 states. [2018-11-23 11:51:42,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 11:51:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 11:51:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-23 11:51:42,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-23 11:51:42,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 11:51:42,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 11:51:42,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2018-11-23 11:51:42,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 11:51:42,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 7 states and 10 transitions. [2018-11-23 11:51:42,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-23 11:51:42,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 11:51:42,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-23 11:51:42,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 11:51:42,100 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 11:51:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-23 11:51:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-23 11:51:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 11:51:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-23 11:51:42,116 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 11:51:42,117 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 11:51:42,117 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 11:51:42,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-23 11:51:42,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 11:51:42,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:51:42,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:51:42,117 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 11:51:42,117 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 11:51:42,118 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 87#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 82#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 83#L21-2 [2018-11-23 11:51:42,118 INFO L796 eck$LassoCheckResult]: Loop: 83#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 88#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 83#L21-2 [2018-11-23 11:51:42,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,118 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-23 11:51:42,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:51:42,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-11-23 11:51:42,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:51:42,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,131 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-11-23 11:51:42,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 11:51:42,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,166 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:42,167 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:42,167 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:42,167 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:42,167 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 11:51:42,167 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,167 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:42,167 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:42,167 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration2_Loop [2018-11-23 11:51:42,167 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:42,167 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:42,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,239 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:42,239 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,258 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,258 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,266 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:42,266 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-192, ULTIMATE.start_main_#t~nondet3=-192} Honda state: {ULTIMATE.start_main_~tmp~0=-192, ULTIMATE.start_main_#t~nondet3=-192} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,284 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,285 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,300 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:42,300 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,306 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,306 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,308 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:42,308 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,323 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,324 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,341 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 11:51:42,341 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,363 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 11:51:42,364 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:42,364 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:42,364 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:42,364 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:42,364 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 11:51:42,365 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,365 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:42,365 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:42,365 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration2_Loop [2018-11-23 11:51:42,365 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:42,365 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:42,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,426 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:42,426 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 11:51:42,427 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 [2018-11-23 11:51:42,427 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:42,427 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:42,428 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:42,428 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:42,428 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:42,428 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:42,428 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:42,429 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 11:51:42,430 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 [2018-11-23 11:51:42,430 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:42,430 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:42,430 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:42,431 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:42,431 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:42,431 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:42,431 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:42,435 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 11:51:42,437 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 11:51:42,437 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 11:51:42,438 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 11:51:42,438 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 11:51:42,438 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 11:51:42,438 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-23 11:51:42,438 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 11:51:42,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:51:42,489 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 [2018-11-23 11:51:42,489 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-23 11:51:42,496 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2018-11-23 11:51:42,497 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 [2018-11-23 11:51:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 11:51:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 11:51:42,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 11:51:42,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 11:51:42,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-23 11:51:42,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-11-23 11:51:42,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 11:51:42,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-11-23 11:51:42,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-23 11:51:42,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 11:51:42,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-11-23 11:51:42,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 11:51:42,500 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-23 11:51:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-11-23 11:51:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-23 11:51:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-23 11:51:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-11-23 11:51:42,502 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-23 11:51:42,502 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-23 11:51:42,502 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 11:51:42,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2018-11-23 11:51:42,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 11:51:42,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:51:42,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:51:42,503 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-11-23 11:51:42,503 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 11:51:42,503 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 141#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 136#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 137#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 144#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 142#L21-2 [2018-11-23 11:51:42,503 INFO L796 eck$LassoCheckResult]: Loop: 142#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 143#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 142#L21-2 [2018-11-23 11:51:42,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,503 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2018-11-23 11:51:42,503 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:51:42,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-11-23 11:51:42,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 11:51:42,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2018-11-23 11:51:42,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 11:51:42,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,553 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:42,553 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:42,553 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:42,553 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:42,553 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 11:51:42,554 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,554 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:42,554 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:42,554 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration3_Loop [2018-11-23 11:51:42,554 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:42,554 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:42,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,605 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:42,606 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,607 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,624 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 11:51:42,624 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,640 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 11:51:42,641 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:42,641 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:42,641 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:42,641 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:42,641 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 11:51:42,641 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,641 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:42,641 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:42,641 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration3_Loop [2018-11-23 11:51:42,641 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:42,641 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:42,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,702 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:42,702 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 11:51:42,702 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 [2018-11-23 11:51:42,703 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:42,703 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:42,703 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:42,703 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:42,703 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:42,704 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:42,704 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:42,707 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 11:51:42,709 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 11:51:42,709 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 11:51:42,710 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 11:51:42,710 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 11:51:42,710 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 11:51:42,710 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-23 11:51:42,711 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 11:51:42,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:51:42,732 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 [2018-11-23 11:51:42,732 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-23 11:51:42,739 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-11-23 11:51:42,740 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 [2018-11-23 11:51:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 11:51:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 11:51:42,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 11:51:42,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,741 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 11:51:42,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:51:42,760 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 11:51:42,760 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-23 11:51:42,766 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-11-23 11:51:42,766 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 [2018-11-23 11:51:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 11:51:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 11:51:42,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 11:51:42,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,767 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 11:51:42,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:42,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:51:42,787 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 11:51:42,787 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-23 11:51:42,794 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2018-11-23 11:51:42,794 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 [2018-11-23 11:51:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 11:51:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-23 11:51:42,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 11:51:42,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-23 11:51:42,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-23 11:51:42,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:42,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2018-11-23 11:51:42,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 11:51:42,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2018-11-23 11:51:42,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 11:51:42,797 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 11:51:42,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-23 11:51:42,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 11:51:42,797 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-23 11:51:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-23 11:51:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2018-11-23 11:51:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 11:51:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2018-11-23 11:51:42,798 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-11-23 11:51:42,798 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-11-23 11:51:42,799 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 11:51:42,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2018-11-23 11:51:42,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 11:51:42,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 11:51:42,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 11:51:42,799 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 11:51:42,799 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 11:51:42,800 INFO L794 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 284#L21-2 [2018-11-23 11:51:42,800 INFO L796 eck$LassoCheckResult]: Loop: 284#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 283#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 284#L21-2 [2018-11-23 11:51:42,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-23 11:51:42,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 11:51:42,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2018-11-23 11:51:42,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 11:51:42,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:42,807 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2018-11-23 11:51:42,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 11:51:42,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 11:51:42,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:51:42,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:51:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 11:51:42,829 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:42,829 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:42,830 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:42,830 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:42,830 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 11:51:42,830 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,830 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:42,830 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:42,830 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration4_Loop [2018-11-23 11:51:42,830 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:42,830 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:42,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,889 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:42,889 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,891 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,891 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,894 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:42,894 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,908 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,908 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,910 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:42,910 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,925 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,925 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,930 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 11:51:42,931 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-256, ULTIMATE.start_main_#t~nondet3=-256} Honda state: {ULTIMATE.start_main_~tmp~0=-256, ULTIMATE.start_main_#t~nondet3=-256} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,945 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 11:51:42,945 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0f3e704-58fb-4bf8-aa3a-870d9ba6dca0/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 [2018-11-23 11:51:42,961 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 11:51:42,961 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 11:51:42,977 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 11:51:42,978 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 11:51:42,978 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 11:51:42,978 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 11:51:42,978 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 11:51:42,978 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 11:51:42,978 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 11:51:42,978 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 11:51:42,978 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 11:51:42,978 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration4_Loop [2018-11-23 11:51:42,979 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 11:51:42,979 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 11:51:42,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:42,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 11:51:43,030 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 11:51:43,031 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 11:51:43,031 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 [2018-11-23 11:51:43,031 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:43,032 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:43,032 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:43,032 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:43,032 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:43,032 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:43,033 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:43,033 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 11:51:43,034 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 [2018-11-23 11:51:43,034 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:43,034 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:43,034 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:43,034 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:43,034 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:43,035 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:43,035 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:43,035 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 11:51:43,036 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 [2018-11-23 11:51:43,036 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 11:51:43,036 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 11:51:43,036 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 11:51:43,036 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 11:51:43,036 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 11:51:43,036 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 11:51:43,037 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 11:51:43,039 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 11:51:43,041 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 11:51:43,041 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 11:51:43,042 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 11:51:43,042 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 11:51:43,042 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 11:51:43,042 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-11-23 11:51:43,042 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 11:51:43,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:51:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:43,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:51:43,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:51:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:51:43,063 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 [2018-11-23 11:51:43,063 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-23 11:51:43,068 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2018-11-23 11:51:43,069 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 [2018-11-23 11:51:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 11:51:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 11:51:43,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-23 11:51:43,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:43,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 11:51:43,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:43,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 11:51:43,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 11:51:43,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2018-11-23 11:51:43,070 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 11:51:43,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2018-11-23 11:51:43,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 11:51:43,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 11:51:43,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 11:51:43,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 11:51:43,071 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:51:43,071 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:51:43,071 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:51:43,071 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 11:51:43,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 11:51:43,072 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 11:51:43,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 11:51:43,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 11:51:43 BoogieIcfgContainer [2018-11-23 11:51:43,076 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 11:51:43,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 11:51:43,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 11:51:43,077 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 11:51:43,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:51:41" (3/4) ... [2018-11-23 11:51:43,079 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 11:51:43,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 11:51:43,080 INFO L168 Benchmark]: Toolchain (without parser) took 2048.04 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 959.1 MB in the beginning and 841.7 MB in the end (delta: 117.4 MB). Peak memory consumption was 353.3 MB. Max. memory is 11.5 GB. [2018-11-23 11:51:43,081 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:51:43,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.65 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:51:43,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:51:43,082 INFO L168 Benchmark]: Boogie Preprocessor took 11.33 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:51:43,082 INFO L168 Benchmark]: RCFGBuilder took 155.58 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -273.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. [2018-11-23 11:51:43,082 INFO L168 Benchmark]: BuchiAutomizer took 1721.55 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 846.8 MB in the end (delta: 372.5 MB). Peak memory consumption was 372.5 MB. Max. memory is 11.5 GB. [2018-11-23 11:51:43,083 INFO L168 Benchmark]: Witness Printer took 2.78 ms. Allocated memory is still 1.3 GB. Free memory is still 841.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:51:43,085 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.65 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 17.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.33 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.58 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -273.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1721.55 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 846.8 MB in the end (delta: 372.5 MB). Peak memory consumption was 372.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.78 ms. Allocated memory is still 1.3 GB. Free memory is still 841.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 199 and consists of 5 locations. One deterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. One deterministic module has affine ranking function z and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 21 SDslu, 13 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp47 ukn100 mio100 lsp100 div463 bol100 ite100 ukn100 eq148 hnf47 smp82 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 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...