./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 36155f521cfe170e9c03fd915618e68821fe0430 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 21:18:24,311 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:18:24,312 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:18:24,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:18:24,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:18:24,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:18:24,321 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:18:24,322 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:18:24,323 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:18:24,323 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:18:24,324 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:18:24,324 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:18:24,325 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:18:24,326 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:18:24,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:18:24,327 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:18:24,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:18:24,329 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:18:24,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:18:24,331 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:18:24,332 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:18:24,333 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:18:24,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:18:24,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:18:24,335 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:18:24,335 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:18:24,336 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:18:24,337 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:18:24,337 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:18:24,338 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:18:24,338 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:18:24,339 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:18:24,339 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:18:24,339 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:18:24,339 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:18:24,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:18:24,340 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-22 21:18:24,348 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:18:24,348 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:18:24,349 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 21:18:24,349 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 21:18:24,349 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 21:18:24,349 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-22 21:18:24,349 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-22 21:18:24,350 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-22 21:18:24,350 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-22 21:18:24,350 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-22 21:18:24,350 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-22 21:18:24,350 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:18:24,350 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 21:18:24,350 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:18:24,350 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:18:24,351 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-22 21:18:24,351 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-22 21:18:24,351 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-22 21:18:24,351 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:18:24,351 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-22 21:18:24,351 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:18:24,351 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-22 21:18:24,352 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:18:24,352 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:18:24,352 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-22 21:18:24,352 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:18:24,352 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 21:18:24,352 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-22 21:18:24,353 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-22 21:18:24,353 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_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36155f521cfe170e9c03fd915618e68821fe0430 [2018-11-22 21:18:24,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:18:24,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:18:24,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:18:24,389 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:18:24,389 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:18:24,390 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-22 21:18:24,435 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/data/33edab008/d122eba6cd284c67bdc5000ceb281bf1/FLAGa0074344a [2018-11-22 21:18:24,764 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:18:24,764 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-22 21:18:24,768 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/data/33edab008/d122eba6cd284c67bdc5000ceb281bf1/FLAGa0074344a [2018-11-22 21:18:25,210 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/data/33edab008/d122eba6cd284c67bdc5000ceb281bf1 [2018-11-22 21:18:25,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:18:25,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:18:25,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:18:25,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:18:25,216 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:18:25,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46704e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25, skipping insertion in model container [2018-11-22 21:18:25,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:18:25,235 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:18:25,334 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:18:25,336 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:18:25,346 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:18:25,354 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:18:25,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25 WrapperNode [2018-11-22 21:18:25,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:18:25,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:18:25,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:18:25,355 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:18:25,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:18:25,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:18:25,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:18:25,372 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:18:25,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... [2018-11-22 21:18:25,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:18:25,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:18:25,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:18:25,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:18:25,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:18:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:18:25,533 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:18:25,533 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-22 21:18:25,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:25 BoogieIcfgContainer [2018-11-22 21:18:25,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:18:25,534 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-22 21:18:25,534 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-22 21:18:25,536 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-22 21:18:25,537 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:18:25,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 09:18:25" (1/3) ... [2018-11-22 21:18:25,537 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6911a5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 09:18:25, skipping insertion in model container [2018-11-22 21:18:25,537 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:18:25,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:25" (2/3) ... [2018-11-22 21:18:25,538 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6911a5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 09:18:25, skipping insertion in model container [2018-11-22 21:18:25,538 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:18:25,538 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:25" (3/3) ... [2018-11-22 21:18:25,539 INFO L375 chiAutomizerObserver]: Analyzing ICFG Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-22 21:18:25,573 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 21:18:25,574 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-22 21:18:25,574 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-22 21:18:25,574 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-22 21:18:25,574 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:18:25,574 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:18:25,575 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-22 21:18:25,575 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:18:25,575 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-22 21:18:25,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-22 21:18:25,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:25,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:25,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:25,604 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 21:18:25,604 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-22 21:18:25,604 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-22 21:18:25,604 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-22 21:18:25,605 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:25,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:25,605 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:25,605 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 21:18:25,605 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-22 21:18:25,610 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L26-2true [2018-11-22 21:18:25,610 INFO L796 eck$LassoCheckResult]: Loop: 8#L26-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 6#L23true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L26-2true [2018-11-22 21:18:25,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:25,614 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-22 21:18:25,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:25,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:25,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:25,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:25,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:25,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-22 21:18:25,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:25,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:25,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:25,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:25,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:25,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:25,692 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-22 21:18:25,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:25,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:25,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:25,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:25,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:25,762 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:25,762 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:25,762 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:25,762 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:25,762 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:25,763 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:25,763 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:25,763 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:25,763 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-22 21:18:25,763 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:25,763 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:25,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:25,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:25,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:25,867 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:25,867 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:25,874 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:25,874 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:25,925 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:25,925 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:25,929 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:25,929 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:25,954 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:25,955 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:25,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:25,959 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:25,977 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:25,977 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:25,997 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:25,998 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:25,998 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:25,998 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:25,998 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:25,998 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:25,999 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:25,999 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:25,999 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:25,999 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-22 21:18:25,999 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:25,999 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:26,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,057 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:26,060 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:26,061 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 [2018-11-22 21:18:26,062 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,062 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,062 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,062 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,065 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:26,066 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:26,072 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:26,072 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 [2018-11-22 21:18:26,073 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,073 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,073 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,073 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,075 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:26,075 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:26,082 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:26,082 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 [2018-11-22 21:18:26,083 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,083 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:26,083 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,083 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,083 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,084 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:26,084 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:26,093 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:26,099 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:26,099 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:26,101 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:26,101 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:26,101 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:26,101 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-22 21:18:26,102 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:26,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:26,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:26,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:26,185 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 [2018-11-22 21:18:26,186 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-22 21:18:26,227 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 8 states. [2018-11-22 21:18:26,227 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 [2018-11-22 21:18:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:18:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-22 21:18:26,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-22 21:18:26,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:26,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-22 21:18:26,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:26,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-22 21:18:26,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:26,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2018-11-22 21:18:26,236 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-22 21:18:26,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 19 transitions. [2018-11-22 21:18:26,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-22 21:18:26,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-22 21:18:26,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-22 21:18:26,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:26,242 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-22 21:18:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-22 21:18:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-22 21:18:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-22 21:18:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2018-11-22 21:18:26,260 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-22 21:18:26,260 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-22 21:18:26,260 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-22 21:18:26,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2018-11-22 21:18:26,260 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-22 21:18:26,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:26,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:26,261 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-22 21:18:26,261 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-22 21:18:26,261 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 88#L23 [2018-11-22 21:18:26,261 INFO L796 eck$LassoCheckResult]: Loop: 88#L23 assume !(main_~q~0 < main_~p~0); 89#L26 assume !(main_~p~0 < main_~q~0); 92#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 88#L23 [2018-11-22 21:18:26,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-22 21:18:26,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:26,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,267 INFO L82 PathProgramCache]: Analyzing trace with hash 44836, now seen corresponding path program 1 times [2018-11-22 21:18:26,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:26,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:26,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:18:26,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 21:18:26,298 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-22 21:18:26,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 21:18:26,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 21:18:26,301 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-22 21:18:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:18:26,311 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-11-22 21:18:26,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 21:18:26,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2018-11-22 21:18:26,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:26,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 12 transitions. [2018-11-22 21:18:26,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-22 21:18:26,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-22 21:18:26,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2018-11-22 21:18:26,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:26,313 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-11-22 21:18:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2018-11-22 21:18:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-11-22 21:18:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-22 21:18:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-11-22 21:18:26,314 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-22 21:18:26,314 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-22 21:18:26,315 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-22 21:18:26,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-11-22 21:18:26,315 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:26,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:26,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:26,315 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-22 21:18:26,315 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-22 21:18:26,316 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 117#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 118#L23 assume !(main_~q~0 < main_~p~0); 114#L26 [2018-11-22 21:18:26,316 INFO L796 eck$LassoCheckResult]: Loop: 114#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 115#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 121#L23 assume !(main_~q~0 < main_~p~0); 114#L26 [2018-11-22 21:18:26,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-22 21:18:26,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:26,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,322 INFO L82 PathProgramCache]: Analyzing trace with hash 47414, now seen corresponding path program 1 times [2018-11-22 21:18:26,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:26,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,329 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 1 times [2018-11-22 21:18:26,329 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:26,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,359 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:26,359 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:26,359 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:26,359 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:26,359 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:26,360 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:26,360 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:26,360 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:26,360 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-22 21:18:26,360 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:26,360 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:26,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,450 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:26,450 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,461 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:26,462 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:26,484 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:26,484 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,490 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:26,490 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:26,514 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:26,514 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,517 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:26,517 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,534 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:26,534 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:26,594 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:26,596 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:26,596 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:26,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:26,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:26,596 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:26,596 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:26,596 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:26,596 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:26,596 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-22 21:18:26,596 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:26,596 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:26,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,669 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:26,669 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:26,669 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 [2018-11-22 21:18:26,670 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,670 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,670 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,670 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,671 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:26,671 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:26,674 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:26,675 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 [2018-11-22 21:18:26,675 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,675 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,675 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,675 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,677 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:26,677 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:26,680 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:26,680 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 [2018-11-22 21:18:26,681 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,681 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:26,681 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,681 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,681 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,682 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:26,682 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:26,686 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:26,691 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:26,691 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:26,691 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:26,691 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:26,692 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:26,692 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-11-22 21:18:26,692 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:26,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:26,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:26,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:26,729 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-22 21:18:26,729 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-22 21:18:26,745 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 20 transitions. Complement of second has 7 states. [2018-11-22 21:18:26,746 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 [2018-11-22 21:18:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-22 21:18:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-22 21:18:26,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-22 21:18:26,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:26,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-22 21:18:26,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:26,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-22 21:18:26,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:26,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2018-11-22 21:18:26,748 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:26,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 17 transitions. [2018-11-22 21:18:26,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-22 21:18:26,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-22 21:18:26,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-11-22 21:18:26,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:26,749 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-11-22 21:18:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-11-22 21:18:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-22 21:18:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-22 21:18:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-11-22 21:18:26,751 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-22 21:18:26,751 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-22 21:18:26,751 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-22 21:18:26,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-11-22 21:18:26,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:26,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:26,751 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:26,752 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-22 21:18:26,752 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-22 21:18:26,752 INFO L794 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 186#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 190#L23 assume !(main_~q~0 < main_~p~0); 192#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 184#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 191#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 182#L26-2 [2018-11-22 21:18:26,752 INFO L796 eck$LassoCheckResult]: Loop: 182#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 187#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 182#L26-2 [2018-11-22 21:18:26,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 1 times [2018-11-22 21:18:26,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:26,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-11-22 21:18:26,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:26,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:26,765 INFO L82 PathProgramCache]: Analyzing trace with hash 666829459, now seen corresponding path program 2 times [2018-11-22 21:18:26,765 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:26,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:26,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:26,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:26,811 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:26,811 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:26,811 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:26,811 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:26,812 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:26,812 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:26,812 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:26,812 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:26,812 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-22 21:18:26,812 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:26,812 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:26,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,851 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:26,851 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,853 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:26,853 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:26,868 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:26,868 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,870 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:26,870 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:26,886 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:26,886 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,888 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:26,888 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:26,904 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:26,904 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:26,921 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:26,922 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:26,922 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:26,922 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:26,922 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:26,923 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:26,923 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:26,923 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:26,923 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:26,923 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-22 21:18:26,923 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:26,923 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:26,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:26,959 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:26,960 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:26,960 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 [2018-11-22 21:18:26,961 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,961 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,961 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,961 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,962 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:26,962 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:26,969 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:26,969 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 [2018-11-22 21:18:26,970 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,970 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,970 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,970 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,971 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:26,972 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:26,974 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:26,974 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 [2018-11-22 21:18:26,975 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:26,975 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:26,975 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:26,975 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:26,975 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:26,976 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:26,976 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:26,979 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:26,981 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:26,982 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:26,982 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:26,982 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:26,982 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:26,982 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-22 21:18:26,983 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:26,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:27,034 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 [2018-11-22 21:18:27,034 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-11-22 21:18:27,047 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 34 transitions. Complement of second has 5 states. [2018-11-22 21:18:27,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:18:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-22 21:18:27,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-22 21:18:27,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-22 21:18:27,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-22 21:18:27,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2018-11-22 21:18:27,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:27,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 30 transitions. [2018-11-22 21:18:27,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-22 21:18:27,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-22 21:18:27,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-11-22 21:18:27,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:27,051 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-11-22 21:18:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-11-22 21:18:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-22 21:18:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-22 21:18:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-11-22 21:18:27,053 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-11-22 21:18:27,053 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-11-22 21:18:27,053 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-22 21:18:27,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2018-11-22 21:18:27,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:27,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:27,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:27,054 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2018-11-22 21:18:27,054 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-22 21:18:27,055 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 272#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 273#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 276#L23 assume !(main_~q~0 < main_~p~0); 265#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 266#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 279#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 280#L26-2 [2018-11-22 21:18:27,055 INFO L796 eck$LassoCheckResult]: Loop: 280#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 281#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 280#L26-2 [2018-11-22 21:18:27,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,055 INFO L82 PathProgramCache]: Analyzing trace with hash 602336749, now seen corresponding path program 3 times [2018-11-22 21:18:27,055 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:27,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-11-22 21:18:27,064 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:27,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,068 INFO L82 PathProgramCache]: Analyzing trace with hash -974968848, now seen corresponding path program 4 times [2018-11-22 21:18:27,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:27,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,094 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:27,094 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:27,095 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:27,095 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:27,095 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:27,095 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,095 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:27,095 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:27,095 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-22 21:18:27,095 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:27,095 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:27,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,127 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:27,127 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:27,130 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,130 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,145 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:27,146 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:27,148 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,148 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,162 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:27,163 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/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 [2018-11-22 21:18:27,168 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,168 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,184 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:27,184 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,201 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:27,202 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:27,203 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:27,203 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:27,203 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:27,203 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:27,203 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,203 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:27,203 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:27,203 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-22 21:18:27,203 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:27,203 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:27,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,237 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:27,237 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:27,237 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 [2018-11-22 21:18:27,237 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:27,237 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:27,238 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:27,238 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:27,238 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:27,238 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:27,240 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:27,241 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 [2018-11-22 21:18:27,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:27,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:27,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:27,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:27,242 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:27,242 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:27,244 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:27,244 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 [2018-11-22 21:18:27,245 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:27,245 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:27,245 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:27,245 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:27,245 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:27,246 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:27,246 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:27,249 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:27,251 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:27,251 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:27,251 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:27,251 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:27,251 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:27,252 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-22 21:18:27,252 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:27,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:27,282 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 [2018-11-22 21:18:27,282 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-11-22 21:18:27,290 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 5 states. [2018-11-22 21:18:27,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:18:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-22 21:18:27,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-22 21:18:27,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,291 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:18:27,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:27,317 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 [2018-11-22 21:18:27,317 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-11-22 21:18:27,324 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 5 states. [2018-11-22 21:18:27,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:18:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-22 21:18:27,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-22 21:18:27,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,325 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:18:27,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:27,347 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 [2018-11-22 21:18:27,347 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-11-22 21:18:27,355 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 33 states and 45 transitions. Complement of second has 4 states. [2018-11-22 21:18:27,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:18:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-22 21:18:27,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-22 21:18:27,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2018-11-22 21:18:27,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-22 21:18:27,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 45 transitions. [2018-11-22 21:18:27,358 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-22 21:18:27,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 36 transitions. [2018-11-22 21:18:27,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-22 21:18:27,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-22 21:18:27,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2018-11-22 21:18:27,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:27,359 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2018-11-22 21:18:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2018-11-22 21:18:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2018-11-22 21:18:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-22 21:18:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-11-22 21:18:27,361 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-22 21:18:27,361 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-22 21:18:27,361 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-22 21:18:27,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2018-11-22 21:18:27,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-22 21:18:27,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:27,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:27,362 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-22 21:18:27,363 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2018-11-22 21:18:27,363 INFO L794 eck$LassoCheckResult]: Stem: 503#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 504#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 512#L23 assume !(main_~q~0 < main_~p~0); 511#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 502#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 509#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 510#L26-2 [2018-11-22 21:18:27,363 INFO L796 eck$LassoCheckResult]: Loop: 510#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 505#L23 assume !(main_~q~0 < main_~p~0); 499#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 500#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 508#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 510#L26-2 [2018-11-22 21:18:27,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 5 times [2018-11-22 21:18:27,363 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:27,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,370 INFO L82 PathProgramCache]: Analyzing trace with hash 38328847, now seen corresponding path program 1 times [2018-11-22 21:18:27,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:27,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1292746272, now seen corresponding path program 6 times [2018-11-22 21:18:27,377 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:27,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,456 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:27,456 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:27,456 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:27,456 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:27,456 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:27,456 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,456 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:27,456 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:27,457 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-22 21:18:27,457 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:27,457 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:27,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,493 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:27,493 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,502 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,502 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,516 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:27,517 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,520 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,520 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,534 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:27,534 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,537 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,538 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,556 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:27,556 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,613 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:27,614 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:27,615 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:27,615 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:27,615 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:27,615 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:27,615 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,615 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:27,615 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:27,615 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-22 21:18:27,615 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:27,615 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:27,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,650 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:27,650 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:27,650 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 [2018-11-22 21:18:27,651 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:27,651 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:27,651 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:27,651 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:27,652 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:27,652 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:27,653 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:27,653 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 [2018-11-22 21:18:27,653 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:27,654 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:27,654 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:27,654 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:27,655 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:27,655 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:27,657 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:27,657 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 [2018-11-22 21:18:27,658 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:27,658 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:27,658 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:27,658 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:27,658 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:27,658 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:18:27,659 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:27,662 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:27,664 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:27,664 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:27,664 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:27,664 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:27,664 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:27,664 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-22 21:18:27,664 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:27,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:27,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:27,697 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-22 21:18:27,697 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 6 states. [2018-11-22 21:18:27,731 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 41 states and 58 transitions. Complement of second has 10 states. [2018-11-22 21:18:27,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2018-11-22 21:18:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-22 21:18:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2018-11-22 21:18:27,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 6 letters. Loop has 5 letters. [2018-11-22 21:18:27,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-22 21:18:27,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 6 letters. Loop has 10 letters. [2018-11-22 21:18:27,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:27,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 58 transitions. [2018-11-22 21:18:27,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:27,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 34 states and 48 transitions. [2018-11-22 21:18:27,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-22 21:18:27,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-22 21:18:27,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 48 transitions. [2018-11-22 21:18:27,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:18:27,734 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 48 transitions. [2018-11-22 21:18:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 48 transitions. [2018-11-22 21:18:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2018-11-22 21:18:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-22 21:18:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2018-11-22 21:18:27,736 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-11-22 21:18:27,736 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-11-22 21:18:27,736 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-22 21:18:27,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2018-11-22 21:18:27,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-22 21:18:27,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:18:27,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:18:27,737 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1] [2018-11-22 21:18:27,737 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-22 21:18:27,737 INFO L794 eck$LassoCheckResult]: Stem: 625#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 626#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 637#L23 assume !(main_~q~0 < main_~p~0); 621#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 622#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 634#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 635#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 631#L23 [2018-11-22 21:18:27,737 INFO L796 eck$LassoCheckResult]: Loop: 631#L23 assume !(main_~q~0 < main_~p~0); 633#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 630#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 631#L23 [2018-11-22 21:18:27,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1363962694, now seen corresponding path program 7 times [2018-11-22 21:18:27,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:27,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,746 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 2 times [2018-11-22 21:18:27,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:18:27,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:27,751 INFO L82 PathProgramCache]: Analyzing trace with hash 872985485, now seen corresponding path program 8 times [2018-11-22 21:18:27,751 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:18:27,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:18:27,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:18:27,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:18:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:18:27,803 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:27,803 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:27,803 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:27,803 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:27,803 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:18:27,803 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,803 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:27,803 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:27,803 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-22 21:18:27,803 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:27,803 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:27,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:27,884 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:27,884 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,886 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,886 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,901 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:27,901 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,904 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,904 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:27,918 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:18:27,918 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,921 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:18:27,921 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e7f4a09-c6ab-4d4e-9154-b59929f212b7/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:27,938 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:18:27,938 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:18:28,091 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:18:28,093 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:18:28,093 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:18:28,093 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:18:28,093 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:18:28,093 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:18:28,093 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:18:28,093 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:18:28,093 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:18:28,093 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-22 21:18:28,093 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:18:28,093 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:18:28,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:28,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:28,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:18:28,152 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:18:28,153 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:18:28,153 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 [2018-11-22 21:18:28,153 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:28,153 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:28,153 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:18:28,153 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:28,154 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 21:18:28,154 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 21:18:28,156 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:18:28,156 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 [2018-11-22 21:18:28,157 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:18:28,157 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:18:28,157 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:18:28,157 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-22 21:18:28,157 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:18:28,157 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-22 21:18:28,157 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:18:28,162 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:18:28,164 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:18:28,165 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:18:28,165 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:18:28,165 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:18:28,165 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:18:28,165 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-11-22 21:18:28,166 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:18:28,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:28,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:28,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:28,203 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 [2018-11-22 21:18:28,203 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-11-22 21:18:28,217 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 27 states and 40 transitions. Complement of second has 7 states. [2018-11-22 21:18:28,217 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 [2018-11-22 21:18:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-22 21:18:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-22 21:18:28,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-22 21:18:28,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:28,218 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:18:28,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:28,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:28,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:28,241 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 [2018-11-22 21:18:28,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-11-22 21:18:28,251 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 27 states and 40 transitions. Complement of second has 7 states. [2018-11-22 21:18:28,251 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 [2018-11-22 21:18:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-22 21:18:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-22 21:18:28,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-22 21:18:28,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:28,252 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:18:28,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:18:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:28,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:18:28,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:18:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:18:28,267 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 [2018-11-22 21:18:28,267 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-11-22 21:18:28,287 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 36 states and 57 transitions. Complement of second has 6 states. [2018-11-22 21:18:28,287 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 [2018-11-22 21:18:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-22 21:18:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-22 21:18:28,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-22 21:18:28,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:28,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 3 letters. [2018-11-22 21:18:28,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:28,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 6 letters. [2018-11-22 21:18:28,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:18:28,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 57 transitions. [2018-11-22 21:18:28,288 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 21:18:28,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2018-11-22 21:18:28,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-22 21:18:28,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-22 21:18:28,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-22 21:18:28,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 21:18:28,289 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:28,289 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:28,289 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:18:28,289 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-22 21:18:28,289 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:18:28,289 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 21:18:28,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-22 21:18:28,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 09:18:28 BoogieIcfgContainer [2018-11-22 21:18:28,294 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-22 21:18:28,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:18:28,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:18:28,294 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:18:28,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:25" (3/4) ... [2018-11-22 21:18:28,297 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-22 21:18:28,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:18:28,297 INFO L168 Benchmark]: Toolchain (without parser) took 3084.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -78.7 MB). Peak memory consumption was 141.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:28,298 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:18:28,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.13 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:28,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.69 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:28,299 INFO L168 Benchmark]: Boogie Preprocessor took 10.57 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:18:28,299 INFO L168 Benchmark]: RCFGBuilder took 150.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:28,300 INFO L168 Benchmark]: BuchiAutomizer took 2759.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.7 MB). Peak memory consumption was 161.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:18:28,300 INFO L168 Benchmark]: Witness Printer took 2.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:18:28,303 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.13 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.69 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.57 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 150.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2759.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.7 MB). Peak memory consumption was 161.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 6 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 49 SDtfs, 56 SDslu, 9 SDs, 0 SdLazy, 120 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax164 hnf99 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf93 smp96 dnf112 smp98 tf107 neg98 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...