./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/loops/terminator_02_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/terminator_02_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 77773b6d98c13684866533d0b64942a0b1025f7d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:05:00,200 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:05:00,201 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:05:00,208 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:05:00,209 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:05:00,209 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:05:00,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:05:00,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:05:00,213 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:05:00,213 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:05:00,214 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:05:00,214 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:05:00,215 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:05:00,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:05:00,216 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:05:00,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:05:00,217 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:05:00,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:05:00,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:05:00,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:05:00,222 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:05:00,223 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:05:00,224 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:05:00,224 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:05:00,225 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:05:00,225 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:05:00,226 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:05:00,226 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:05:00,227 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:05:00,228 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:05:00,228 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:05:00,228 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:05:00,229 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:05:00,229 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:05:00,229 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:05:00,230 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:05:00,230 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 10:05:00,241 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:05:00,242 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:05:00,243 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:05:00,243 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:05:00,243 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:05:00,243 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 10:05:00,243 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 10:05:00,243 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 10:05:00,244 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 10:05:00,244 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 10:05:00,244 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 10:05:00,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:05:00,244 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:05:00,244 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 10:05:00,244 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:05:00,245 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:05:00,245 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:05:00,245 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 10:05:00,245 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 10:05:00,245 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 10:05:00,245 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:05:00,245 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:05:00,246 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 10:05:00,246 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:05:00,246 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 10:05:00,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:05:00,246 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:05:00,246 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 10:05:00,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:05:00,247 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:05:00,247 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 10:05:00,247 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 10:05:00,248 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_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 -> 77773b6d98c13684866533d0b64942a0b1025f7d [2018-11-18 10:05:00,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:05:00,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:05:00,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:05:00,285 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:05:00,286 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:05:00,286 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/../../sv-benchmarks/c/loops/terminator_02_true-unreach-call_true-termination.i [2018-11-18 10:05:00,321 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/data/36d855a91/098d718120d242b8bff09b96772cdf03/FLAG71a1b046b [2018-11-18 10:05:00,718 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:05:00,718 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/sv-benchmarks/c/loops/terminator_02_true-unreach-call_true-termination.i [2018-11-18 10:05:00,722 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/data/36d855a91/098d718120d242b8bff09b96772cdf03/FLAG71a1b046b [2018-11-18 10:05:00,730 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/data/36d855a91/098d718120d242b8bff09b96772cdf03 [2018-11-18 10:05:00,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:05:00,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:05:00,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:05:00,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:05:00,736 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:05:00,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4915a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00, skipping insertion in model container [2018-11-18 10:05:00,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:05:00,755 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:05:00,860 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:05:00,862 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:05:00,872 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:05:00,880 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:05:00,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00 WrapperNode [2018-11-18 10:05:00,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:05:00,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:05:00,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:05:00,881 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:05:00,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:05:00,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:05:00,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:05:00,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:05:00,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... [2018-11-18 10:05:00,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:05:00,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:05:00,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:05:00,913 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:05:00,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:05:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:05:01,090 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:05:01,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:05:01 BoogieIcfgContainer [2018-11-18 10:05:01,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:05:01,091 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 10:05:01,091 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 10:05:01,094 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 10:05:01,094 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:05:01,095 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 10:05:00" (1/3) ... [2018-11-18 10:05:01,095 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7deffff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 10:05:01, skipping insertion in model container [2018-11-18 10:05:01,096 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:05:01,096 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:05:00" (2/3) ... [2018-11-18 10:05:01,096 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7deffff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 10:05:01, skipping insertion in model container [2018-11-18 10:05:01,096 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:05:01,096 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:05:01" (3/3) ... [2018-11-18 10:05:01,098 INFO L375 chiAutomizerObserver]: Analyzing ICFG terminator_02_true-unreach-call_true-termination.i [2018-11-18 10:05:01,152 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:05:01,153 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 10:05:01,153 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 10:05:01,153 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 10:05:01,153 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:05:01,153 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:05:01,154 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 10:05:01,154 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:05:01,154 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 10:05:01,166 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-18 10:05:01,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:05:01,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:05:01,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:05:01,190 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-18 10:05:01,190 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:05:01,191 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 10:05:01,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-18 10:05:01,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:05:01,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:05:01,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:05:01,193 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-18 10:05:01,193 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:05:01,200 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L17true assume !!(main_~x~0 > -100); 6#L18true assume !!(main_~x~0 < 200); 8#L19true assume !!(main_~z~0 > 100); 9#L20true assume !!(main_~z~0 < 200); 13#L24-2true [2018-11-18 10:05:01,200 INFO L796 eck$LassoCheckResult]: Loop: 13#L24-2true assume true; 10#L21-1true assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 16#L24true assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 13#L24-2true [2018-11-18 10:05:01,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:01,205 INFO L82 PathProgramCache]: Analyzing trace with hash 889571341, now seen corresponding path program 1 times [2018-11-18 10:05:01,207 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:01,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:01,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:05:01,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:01,286 INFO L82 PathProgramCache]: Analyzing trace with hash 55804, now seen corresponding path program 1 times [2018-11-18 10:05:01,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:01,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:01,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:05:01,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1271629424, now seen corresponding path program 1 times [2018-11-18 10:05:01,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:01,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:01,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:05:01,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,372 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:01,373 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:01,373 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:01,373 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:01,373 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:05:01,373 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:01,374 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:01,374 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:01,374 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration1_Loop [2018-11-18 10:05:01,374 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:01,374 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:01,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,512 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:01,513 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:01,521 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:01,522 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:01,545 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:05:01,545 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:01,563 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:05:01,564 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:01,564 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:01,564 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:01,564 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:01,564 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:05:01,564 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:01,565 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:01,565 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:01,565 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration1_Loop [2018-11-18 10:05:01,565 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:01,565 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:01,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,652 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:01,656 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:05:01,657 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:01,658 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:01,659 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:01,659 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:01,659 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:01,659 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:01,661 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:01,662 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:01,667 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:05:01,673 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:05:01,673 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 10:05:01,674 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:05:01,674 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:05:01,675 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:05:01,675 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-18 10:05:01,676 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:05:01,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:01,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:01,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:05:01,749 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:05:01,750 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2018-11-18 10:05:01,786 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 4 states. Result 46 states and 57 transitions. Complement of second has 8 states. [2018-11-18 10:05:01,786 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 [2018-11-18 10:05:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:05:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2018-11-18 10:05:01,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 10:05:01,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:01,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-18 10:05:01,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:01,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-18 10:05:01,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:01,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 57 transitions. [2018-11-18 10:05:01,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:05:01,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 15 states and 18 transitions. [2018-11-18 10:05:01,795 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 10:05:01,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-18 10:05:01,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2018-11-18 10:05:01,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:05:01,796 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 10:05:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2018-11-18 10:05:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 10:05:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 10:05:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-18 10:05:01,813 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 10:05:01,814 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 10:05:01,814 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 10:05:01,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-18 10:05:01,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:05:01,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:05:01,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:05:01,815 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:05:01,815 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:05:01,815 INFO L794 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 117#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 118#L17 assume !!(main_~x~0 > -100); 125#L18 assume !!(main_~x~0 < 200); 126#L19 assume !!(main_~z~0 > 100); 129#L20 assume !!(main_~z~0 < 200); 130#L24-2 assume true; 124#L21-1 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 127#L24 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 120#L24-2 [2018-11-18 10:05:01,815 INFO L796 eck$LassoCheckResult]: Loop: 120#L24-2 assume true; 121#L21-1 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 131#L24 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 120#L24-2 [2018-11-18 10:05:01,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:01,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1271629426, now seen corresponding path program 1 times [2018-11-18 10:05:01,815 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:01,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:01,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:05:01,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:01,822 INFO L82 PathProgramCache]: Analyzing trace with hash 55804, now seen corresponding path program 2 times [2018-11-18 10:05:01,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:01,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:01,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:05:01,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:01,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1500705259, now seen corresponding path program 1 times [2018-11-18 10:05:01,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:01,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:01,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:05:01,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:01,862 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:01,862 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:01,862 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:01,862 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:01,862 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:05:01,862 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:01,862 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:01,863 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:01,863 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration2_Loop [2018-11-18 10:05:01,863 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:01,863 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:01,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:01,936 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:01,936 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:01,953 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:01,953 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:01,965 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:05:01,966 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-128, ULTIMATE.start_main_#t~nondet3=-128} Honda state: {ULTIMATE.start_main_~tmp~0=-128, ULTIMATE.start_main_#t~nondet3=-128} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:01,989 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:01,989 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:01,997 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:05:01,997 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_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:02,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,022 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:02,054 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:05:02,054 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,082 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:05:02,084 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:02,084 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:02,084 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:02,084 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:02,084 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:05:02,084 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,084 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:02,084 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:02,084 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration2_Loop [2018-11-18 10:05:02,084 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:02,085 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:02,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,166 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:02,166 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:05:02,167 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,167 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,168 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,168 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,168 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,168 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,168 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,169 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,170 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:05:02,171 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,171 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,171 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,171 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,172 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,172 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,172 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,173 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,177 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:05:02,177 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,178 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,178 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,178 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,178 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,178 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,179 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,179 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,182 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:05:02,184 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:05:02,184 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 10:05:02,185 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:05:02,185 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:05:02,185 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:05:02,186 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-18 10:05:02,186 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:05:02,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:05:02,215 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:05:02,216 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-18 10:05:02,235 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 21 states and 26 transitions. Complement of second has 7 states. [2018-11-18 10:05:02,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:05:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:05:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 10:05:02,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-18 10:05:02,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 10:05:02,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-18 10:05:02,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2018-11-18 10:05:02,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:05:02,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 26 transitions. [2018-11-18 10:05:02,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-18 10:05:02,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-18 10:05:02,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 26 transitions. [2018-11-18 10:05:02,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:05:02,239 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2018-11-18 10:05:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 26 transitions. [2018-11-18 10:05:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 10:05:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 10:05:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2018-11-18 10:05:02,243 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2018-11-18 10:05:02,243 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2018-11-18 10:05:02,244 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 10:05:02,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2018-11-18 10:05:02,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:05:02,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:05:02,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:05:02,245 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 10:05:02,245 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:05:02,245 INFO L794 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 213#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 214#L17 assume !!(main_~x~0 > -100); 221#L18 assume !!(main_~x~0 < 200); 222#L19 assume !!(main_~z~0 > 100); 225#L20 assume !!(main_~z~0 < 200); 226#L24-2 assume true; 230#L21-1 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 228#L24 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 227#L24-2 assume true; 220#L21-1 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 223#L24 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 216#L24-2 [2018-11-18 10:05:02,245 INFO L796 eck$LassoCheckResult]: Loop: 216#L24-2 assume true; 217#L21-1 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 229#L24 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 216#L24-2 [2018-11-18 10:05:02,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1500705261, now seen corresponding path program 2 times [2018-11-18 10:05:02,246 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:02,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:02,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:05:02,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,257 INFO L82 PathProgramCache]: Analyzing trace with hash 55804, now seen corresponding path program 3 times [2018-11-18 10:05:02,257 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:02,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:02,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:05:02,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1195872400, now seen corresponding path program 2 times [2018-11-18 10:05:02,262 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:02,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:02,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:05:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,309 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:02,309 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:02,309 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:02,309 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:02,309 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:05:02,309 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,309 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:02,309 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:02,309 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration3_Loop [2018-11-18 10:05:02,309 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:02,310 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:02,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,379 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:02,379 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:02,381 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,381 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,396 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:05:02,397 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_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/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 [2018-11-18 10:05:02,405 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,405 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,408 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:05:02,408 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_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,423 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,423 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,440 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:05:02,440 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,457 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:05:02,458 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:02,458 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:02,459 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:02,459 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:02,459 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:05:02,459 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,459 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:02,459 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:02,459 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration3_Loop [2018-11-18 10:05:02,459 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:02,459 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:02,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,554 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:02,554 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:05:02,554 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,555 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,555 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,555 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,555 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,555 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,556 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,556 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,559 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:05:02,559 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,560 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,560 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,560 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,560 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,560 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,561 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,561 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,561 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:05:02,562 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,562 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,562 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,562 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,563 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,563 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,563 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,563 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,566 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:05:02,568 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:05:02,568 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 10:05:02,571 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:05:02,571 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:05:02,572 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:05:02,572 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-18 10:05:02,572 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:05:02,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:05:02,598 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:05:02,598 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 10:05:02,607 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2018-11-18 10:05:02,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:05:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:05:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 10:05:02,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 10:05:02,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,608 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:05:02,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:05:02,630 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 [2018-11-18 10:05:02,631 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 10:05:02,640 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2018-11-18 10:05:02,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:05:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:05:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 10:05:02,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 10:05:02,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,641 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:05:02,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:05:02,666 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 [2018-11-18 10:05:02,666 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 10:05:02,673 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 28 states and 36 transitions. Complement of second has 6 states. [2018-11-18 10:05:02,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:05:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:05:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-18 10:05:02,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 10:05:02,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-18 10:05:02,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-18 10:05:02,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:02,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2018-11-18 10:05:02,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 10:05:02,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 24 states and 30 transitions. [2018-11-18 10:05:02,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 10:05:02,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-18 10:05:02,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2018-11-18 10:05:02,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:05:02,678 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-11-18 10:05:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2018-11-18 10:05:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 12. [2018-11-18 10:05:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 10:05:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-11-18 10:05:02,679 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-11-18 10:05:02,679 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-11-18 10:05:02,679 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 10:05:02,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2018-11-18 10:05:02,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 10:05:02,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:05:02,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:05:02,680 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-18 10:05:02,680 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:05:02,680 INFO L794 eck$LassoCheckResult]: Stem: 490#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 488#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 489#L17 assume !!(main_~x~0 > -100); 495#L18 assume !!(main_~x~0 < 200); 496#L19 assume !!(main_~z~0 > 100); 499#L20 assume !!(main_~z~0 < 200); 491#L24-2 [2018-11-18 10:05:02,680 INFO L796 eck$LassoCheckResult]: Loop: 491#L24-2 assume true; 493#L21-1 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 497#L24 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; 491#L24-2 [2018-11-18 10:05:02,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,681 INFO L82 PathProgramCache]: Analyzing trace with hash 889571341, now seen corresponding path program 2 times [2018-11-18 10:05:02,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:02,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:02,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:05:02,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,684 INFO L82 PathProgramCache]: Analyzing trace with hash 55806, now seen corresponding path program 1 times [2018-11-18 10:05:02,684 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:02,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:02,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:05:02,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1271629426, now seen corresponding path program 3 times [2018-11-18 10:05:02,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:05:02,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:05:02,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:05:02,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:05:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:05:02,714 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:02,714 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:02,714 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:02,714 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:02,714 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:05:02,714 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,715 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:02,715 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:02,715 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration4_Loop [2018-11-18 10:05:02,715 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:02,715 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:02,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,765 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:02,766 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,769 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,773 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:05:02,773 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_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,790 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,791 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,793 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:05:02,793 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_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,824 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:05:02,824 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_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,850 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:05:02,850 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_767ef82c-4fdc-4592-b0f2-0cea5934ef7f/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:05:02,868 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:05:02,885 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:05:02,886 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:05:02,886 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:05:02,886 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:05:02,886 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:05:02,886 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:05:02,886 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:05:02,886 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:05:02,887 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:05:02,887 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_true-unreach-call_true-termination.i_Iteration4_Loop [2018-11-18 10:05:02,887 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:05:02,887 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:05:02,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 10:05:02,956 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:05:02,956 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:05:02,956 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,957 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,957 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,957 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,957 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,957 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,958 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,958 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,958 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:05:02,958 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,959 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,959 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,959 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,959 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,959 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,959 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,959 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,960 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:05:02,960 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 10:05:02,960 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:05:02,960 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:05:02,960 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:05:02,961 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:05:02,961 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:05:02,961 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:05:02,961 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:05:02,963 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:05:02,965 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:05:02,965 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:05:02,966 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:05:02,966 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:05:02,966 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:05:02,966 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-11-18 10:05:02,966 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:05:02,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:05:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:02,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:05:03,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:05:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:05:03,015 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:05:03,016 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-18 10:05:03,025 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 22 states and 29 transitions. Complement of second has 6 states. [2018-11-18 10:05:03,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:05:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:05:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 10:05:03,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 10:05:03,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:03,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-18 10:05:03,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:03,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-18 10:05:03,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:05:03,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2018-11-18 10:05:03,027 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 10:05:03,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-11-18 10:05:03,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 10:05:03,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 10:05:03,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 10:05:03,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 10:05:03,027 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:05:03,027 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:05:03,027 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:05:03,028 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 10:05:03,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:05:03,028 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 10:05:03,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 10:05:03,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 10:05:03 BoogieIcfgContainer [2018-11-18 10:05:03,033 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 10:05:03,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:05:03,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:05:03,033 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:05:03,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:05:01" (3/4) ... [2018-11-18 10:05:03,036 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:05:03,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:05:03,037 INFO L168 Benchmark]: Toolchain (without parser) took 2304.18 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.8 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -248.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:05:03,038 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-18 10:05:03,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.76 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. [2018-11-18 10:05:03,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.27 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. [2018-11-18 10:05:03,039 INFO L168 Benchmark]: Boogie Preprocessor took 12.97 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. [2018-11-18 10:05:03,039 INFO L168 Benchmark]: RCFGBuilder took 177.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:05:03,040 INFO L168 Benchmark]: BuchiAutomizer took 1942.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:05:03,040 INFO L168 Benchmark]: Witness Printer took 3.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:05:03,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 146.76 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 19.27 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 12.97 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 177.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1942.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 4 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 21 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 71 SDtfs, 69 SDslu, 23 SDs, 0 SdLazy, 43 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: sat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 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...