./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 0.1.23-635dfa2 [2018-12-08 15:49:48,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 15:49:48,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 15:49:48,852 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 15:49:48,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 15:49:48,853 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 15:49:48,853 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 15:49:48,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 15:49:48,855 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 15:49:48,855 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 15:49:48,856 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 15:49:48,856 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 15:49:48,856 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 15:49:48,857 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 15:49:48,857 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 15:49:48,858 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 15:49:48,858 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 15:49:48,859 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 15:49:48,860 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 15:49:48,861 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 15:49:48,861 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 15:49:48,862 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 15:49:48,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 15:49:48,863 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 15:49:48,863 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 15:49:48,863 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 15:49:48,864 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 15:49:48,864 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 15:49:48,865 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 15:49:48,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 15:49:48,865 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 15:49:48,865 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 15:49:48,866 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 15:49:48,866 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 15:49:48,866 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 15:49:48,866 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 15:49:48,867 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 15:49:48,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 15:49:48,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 15:49:48,875 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 15:49:48,875 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 15:49:48,875 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 15:49:48,875 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 15:49:48,875 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 15:49:48,876 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 15:49:48,876 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 15:49:48,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 15:49:48,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 15:49:48,877 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 15:49:48,878 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 15:49:48,878 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_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:48,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 15:49:48,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 15:49:48,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 15:49:48,907 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 15:49:48,908 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 15:49:48,908 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-08 15:49:48,950 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/data/b6500dc58/d5a84522406e47499f10f896d6d07c0c/FLAG25abea75e [2018-12-08 15:49:49,368 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 15:49:49,368 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-08 15:49:49,372 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/data/b6500dc58/d5a84522406e47499f10f896d6d07c0c/FLAG25abea75e [2018-12-08 15:49:49,381 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/bin-2019/uautomizer/data/b6500dc58/d5a84522406e47499f10f896d6d07c0c [2018-12-08 15:49:49,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 15:49:49,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 15:49:49,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 15:49:49,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 15:49:49,387 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 15:49:49,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49, skipping insertion in model container [2018-12-08 15:49:49,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 15:49:49,407 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 15:49:49,493 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:49:49,496 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 15:49:49,504 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:49:49,512 INFO L195 MainTranslator]: Completed translation [2018-12-08 15:49:49,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49 WrapperNode [2018-12-08 15:49:49,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 15:49:49,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 15:49:49,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 15:49:49,513 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 15:49:49,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 15:49:49,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 15:49:49,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 15:49:49,533 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 15:49:49,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... [2018-12-08 15:49:49,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 15:49:49,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 15:49:49,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 15:49:49,546 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 15:49:49,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 15:49:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 15:49:49,676 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 15:49:49,676 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-08 15:49:49,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:49:49 BoogieIcfgContainer [2018-12-08 15:49:49,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 15:49:49,677 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 15:49:49,677 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 15:49:49,679 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 15:49:49,679 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 15:49:49,679 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 03:49:49" (1/3) ... [2018-12-08 15:49:49,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61a178f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 03:49:49, skipping insertion in model container [2018-12-08 15:49:49,680 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 15:49:49,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:49:49" (2/3) ... [2018-12-08 15:49:49,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61a178f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 03:49:49, skipping insertion in model container [2018-12-08 15:49:49,680 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 15:49:49,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:49:49" (3/3) ... [2018-12-08 15:49:49,681 INFO L375 chiAutomizerObserver]: Analyzing ICFG Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-08 15:49:49,712 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 15:49:49,712 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 15:49:49,712 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 15:49:49,713 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 15:49:49,713 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 15:49:49,713 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 15:49:49,713 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 15:49:49,713 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 15:49:49,713 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 15:49:49,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-08 15:49:49,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:49,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:49,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:49,737 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 15:49:49,737 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 15:49:49,737 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 15:49:49,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-08 15:49:49,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:49,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:49,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:49,738 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 15:49:49,738 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 15:49:49,742 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L26-2true [2018-12-08 15:49:49,743 INFO L796 eck$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 [2018-12-08 15:49:49,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:49,746 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-08 15:49:49,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:49,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:49,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:49,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:49,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:49,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:49,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-08 15:49:49,802 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:49,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:49,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:49,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:49,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:49,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:49,810 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-08 15:49:49,810 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:49,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:49,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:49,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:49,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:49,860 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:49,861 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:49,861 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:49,862 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:49,862 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 15:49:49,862 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:49,862 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:49,862 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:49,862 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-08 15:49:49,862 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:49,863 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:49,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:49,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:49,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:49,959 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:49,959 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:49,963 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:49,963 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:49,983 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 15:49:49,983 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_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:49,986 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:49,986 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:50,001 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 15:49:50,001 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_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:50,004 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:50,004 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:50,023 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 15:49:50,023 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:50,041 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 15:49:50,042 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:50,043 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:50,043 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:50,043 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:50,043 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 15:49:50,043 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:50,043 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:50,043 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:50,043 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-08 15:49:50,043 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:50,043 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:50,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,091 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:50,094 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 15:49:50,095 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 [2018-12-08 15:49:50,096 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:50,096 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:50,096 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:50,096 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:50,098 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 15:49:50,099 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 15:49:50,103 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 15:49:50,104 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 [2018-12-08 15:49:50,104 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:50,105 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:50,105 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:50,105 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:50,106 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 15:49:50,106 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 15:49:50,112 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 15:49:50,112 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 [2018-12-08 15:49:50,112 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:50,112 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 15:49:50,113 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:50,113 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:50,113 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:50,113 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 15:49:50,114 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 15:49:50,118 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 15:49:50,122 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 15:49:50,122 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 15:49:50,124 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 15:49:50,124 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 15:49:50,124 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 15:49:50,124 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-08 15:49:50,125 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 15:49:50,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:50,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:50,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:50,181 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 [2018-12-08 15:49:50,181 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-12-08 15:49:50,218 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. [2018-12-08 15:49:50,219 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 [2018-12-08 15:49:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 15:49:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-12-08 15:49:50,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-08 15:49:50,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 15:49:50,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-08 15:49:50,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2018-12-08 15:49:50,226 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-08 15:49:50,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 19 transitions. [2018-12-08 15:49:50,229 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-08 15:49:50,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-12-08 15:49:50,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-12-08 15:49:50,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 15:49:50,230 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-12-08 15:49:50,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-12-08 15:49:50,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-12-08 15:49:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 15:49:50,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2018-12-08 15:49:50,247 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-12-08 15:49:50,247 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-12-08 15:49:50,247 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 15:49:50,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2018-12-08 15:49:50,247 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-08 15:49:50,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:50,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:50,248 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-08 15:49:50,248 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 15:49:50,248 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 88#L23 [2018-12-08 15:49:50,248 INFO L796 eck$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 [2018-12-08 15:49:50,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-08 15:49:50,248 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:50,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,256 INFO L82 PathProgramCache]: Analyzing trace with hash 44836, now seen corresponding path program 1 times [2018-12-08 15:49:50,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:50,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:50,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:49:50,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 15:49:50,283 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-08 15:49:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:49:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:49:50,286 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-12-08 15:49:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:49:50,295 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-12-08 15:49:50,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:49:50,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2018-12-08 15:49:50,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:50,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 12 transitions. [2018-12-08 15:49:50,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 15:49:50,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 15:49:50,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2018-12-08 15:49:50,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 15:49:50,297 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-12-08 15:49:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2018-12-08 15:49:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-12-08 15:49:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-08 15:49:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-08 15:49:50,297 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-08 15:49:50,297 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-08 15:49:50,297 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 15:49:50,298 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-08 15:49:50,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:50,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:50,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:50,298 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 15:49:50,298 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 15:49:50,298 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 [2018-12-08 15:49:50,298 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 [2018-12-08 15:49:50,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,299 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-12-08 15:49:50,299 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:50,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,303 INFO L82 PathProgramCache]: Analyzing trace with hash 47414, now seen corresponding path program 1 times [2018-12-08 15:49:50,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:50,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,308 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 1 times [2018-12-08 15:49:50,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:50,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,334 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:50,334 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:50,334 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:50,334 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:50,334 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 15:49:50,334 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:50,334 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:50,334 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:50,334 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-08 15:49:50,334 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:50,334 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:50,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,416 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:50,416 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:50,418 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:50,418 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:50,442 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 15:49:50,442 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_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:50,445 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:50,445 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:50,462 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 15:49:50,462 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:50,575 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 15:49:50,576 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:50,576 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:50,576 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:50,576 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:50,577 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 15:49:50,577 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:50,577 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:50,577 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:50,577 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-08 15:49:50,577 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:50,577 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:50,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,655 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:50,656 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 15:49:50,656 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 [2018-12-08 15:49:50,656 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:50,656 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:50,657 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:50,657 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:50,658 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 15:49:50,658 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 15:49:50,660 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 15:49:50,661 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 [2018-12-08 15:49:50,661 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:50,661 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 15:49:50,662 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:50,662 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:50,662 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:50,662 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 15:49:50,663 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 15:49:50,667 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 15:49:50,672 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 15:49:50,672 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 15:49:50,672 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 15:49:50,672 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 15:49:50,673 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 15:49:50,673 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-12-08 15:49:50,673 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 15:49:50,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:50,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:50,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:50,704 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 [2018-12-08 15:49:50,704 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-08 15:49:50,715 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. [2018-12-08 15:49:50,715 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 [2018-12-08 15:49:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 15:49:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-12-08 15:49:50,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-08 15:49:50,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 15:49:50,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-08 15:49:50,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,716 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2018-12-08 15:49:50,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:50,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 17 transitions. [2018-12-08 15:49:50,717 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-08 15:49:50,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-08 15:49:50,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-12-08 15:49:50,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 15:49:50,717 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-12-08 15:49:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-12-08 15:49:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-12-08 15:49:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 15:49:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-12-08 15:49:50,718 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-08 15:49:50,718 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-08 15:49:50,718 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 15:49:50,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-12-08 15:49:50,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:50,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:50,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:50,719 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-12-08 15:49:50,719 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 15:49:50,719 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 [2018-12-08 15:49:50,719 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 [2018-12-08 15:49:50,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,719 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 1 times [2018-12-08 15:49:50,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:50,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-12-08 15:49:50,726 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:50,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,730 INFO L82 PathProgramCache]: Analyzing trace with hash 666829459, now seen corresponding path program 2 times [2018-12-08 15:49:50,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:50,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,751 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:50,751 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:50,751 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:50,752 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:50,752 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 15:49:50,752 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:50,752 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:50,752 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:50,752 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-12-08 15:49:50,752 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:50,752 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:50,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,803 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:50,804 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:50,805 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:50,805 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:50,822 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 15:49:50,822 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:50,838 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 15:49:50,839 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:50,840 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:50,840 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:50,840 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:50,840 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 15:49:50,840 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:50,840 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:50,840 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:50,840 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-12-08 15:49:50,840 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:50,840 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:50,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,884 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:50,884 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 15:49:50,884 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 [2018-12-08 15:49:50,885 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:50,885 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 15:49:50,885 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:50,885 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:50,885 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:50,886 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 15:49:50,886 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 15:49:50,888 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 15:49:50,890 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 15:49:50,890 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 15:49:50,890 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 15:49:50,890 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 15:49:50,890 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 15:49:50,890 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-08 15:49:50,891 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 15:49:50,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:50,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:50,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:50,913 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 [2018-12-08 15:49:50,913 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-08 15:49:50,921 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. [2018-12-08 15:49:50,922 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 [2018-12-08 15:49:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 15:49:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-08 15:49:50,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-08 15:49:50,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-08 15:49:50,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-08 15:49:50,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:50,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2018-12-08 15:49:50,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:50,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 30 transitions. [2018-12-08 15:49:50,924 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-08 15:49:50,924 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-08 15:49:50,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-12-08 15:49:50,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 15:49:50,924 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-08 15:49:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-12-08 15:49:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-12-08 15:49:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-08 15:49:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-12-08 15:49:50,925 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-12-08 15:49:50,926 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-12-08 15:49:50,926 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 15:49:50,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2018-12-08 15:49:50,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:50,926 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:50,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:50,926 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2018-12-08 15:49:50,926 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 15:49:50,927 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 [2018-12-08 15:49:50,927 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 [2018-12-08 15:49:50,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,927 INFO L82 PathProgramCache]: Analyzing trace with hash 602336749, now seen corresponding path program 3 times [2018-12-08 15:49:50,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:50,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-12-08 15:49:50,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:50,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:50,940 INFO L82 PathProgramCache]: Analyzing trace with hash -974968848, now seen corresponding path program 4 times [2018-12-08 15:49:50,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:50,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:50,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:50,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:50,975 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:50,975 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:50,975 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:50,975 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:50,975 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 15:49:50,975 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:50,975 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:50,975 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:50,975 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-12-08 15:49:50,975 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:50,975 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:50,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:50,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,015 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:51,015 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:51,017 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,033 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 15:49:51,033 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:51,049 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 15:49:51,050 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:51,050 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:51,050 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:51,050 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:51,050 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 15:49:51,050 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:51,051 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:51,051 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:51,051 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-12-08 15:49:51,051 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:51,051 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:51,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,080 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:51,080 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 15:49:51,080 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 [2018-12-08 15:49:51,081 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:51,081 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 15:49:51,081 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:51,081 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:51,081 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:51,081 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 15:49:51,081 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 15:49:51,084 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 15:49:51,085 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 15:49:51,085 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 15:49:51,085 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 15:49:51,085 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 15:49:51,085 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 15:49:51,085 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-08 15:49:51,086 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 15:49:51,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:51,106 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 [2018-12-08 15:49:51,106 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-12-08 15:49:51,114 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. [2018-12-08 15:49:51,114 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 [2018-12-08 15:49:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 15:49:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-08 15:49:51,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-08 15:49:51,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,114 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 15:49:51,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:51,137 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 [2018-12-08 15:49:51,137 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-12-08 15:49:51,143 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. [2018-12-08 15:49:51,143 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 [2018-12-08 15:49:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 15:49:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-08 15:49:51,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-08 15:49:51,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,144 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 15:49:51,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:51,166 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 [2018-12-08 15:49:51,166 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-12-08 15:49:51,174 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. [2018-12-08 15:49:51,174 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 [2018-12-08 15:49:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 15:49:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-12-08 15:49:51,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-08 15:49:51,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-08 15:49:51,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 4 letters. [2018-12-08 15:49:51,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 45 transitions. [2018-12-08 15:49:51,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-08 15:49:51,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 36 transitions. [2018-12-08 15:49:51,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-12-08 15:49:51,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-12-08 15:49:51,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2018-12-08 15:49:51,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 15:49:51,176 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2018-12-08 15:49:51,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2018-12-08 15:49:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2018-12-08 15:49:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 15:49:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-12-08 15:49:51,177 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-12-08 15:49:51,178 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-12-08 15:49:51,178 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 15:49:51,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2018-12-08 15:49:51,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-12-08 15:49:51,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:51,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:51,178 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-12-08 15:49:51,178 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2018-12-08 15:49:51,178 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 [2018-12-08 15:49:51,178 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 [2018-12-08 15:49:51,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,179 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 5 times [2018-12-08 15:49:51,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:51,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:51,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:51,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,184 INFO L82 PathProgramCache]: Analyzing trace with hash 38328847, now seen corresponding path program 1 times [2018-12-08 15:49:51,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:51,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:51,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:51,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1292746272, now seen corresponding path program 6 times [2018-12-08 15:49:51,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:51,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:51,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:51,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,241 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:51,241 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:51,241 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:51,241 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:51,241 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 15:49:51,241 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:51,242 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:51,242 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:51,242 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-12-08 15:49:51,242 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:51,242 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:51,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,308 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:51,309 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,310 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:51,310 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,328 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 15:49:51,328 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:51,380 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 15:49:51,381 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:51,382 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:51,382 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:51,382 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:51,382 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 15:49:51,382 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:51,382 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:51,382 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:51,382 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-12-08 15:49:51,382 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:51,382 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:51,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,426 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:51,426 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 15:49:51,426 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 [2018-12-08 15:49:51,427 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:51,427 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 15:49:51,427 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:51,427 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:51,427 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:51,427 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 15:49:51,427 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 15:49:51,429 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 15:49:51,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 15:49:51,431 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 15:49:51,431 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 15:49:51,431 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 15:49:51,431 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 15:49:51,431 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-08 15:49:51,431 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 15:49:51,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:51,464 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 [2018-12-08 15:49:51,464 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 6 states. [2018-12-08 15:49:51,495 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. [2018-12-08 15:49:51,495 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 [2018-12-08 15:49:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-08 15:49:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2018-12-08 15:49:51,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 6 letters. Loop has 5 letters. [2018-12-08 15:49:51,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 11 letters. Loop has 5 letters. [2018-12-08 15:49:51,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 6 letters. Loop has 10 letters. [2018-12-08 15:49:51,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 58 transitions. [2018-12-08 15:49:51,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:51,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 34 states and 48 transitions. [2018-12-08 15:49:51,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-08 15:49:51,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-08 15:49:51,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 48 transitions. [2018-12-08 15:49:51,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 15:49:51,497 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 48 transitions. [2018-12-08 15:49:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 48 transitions. [2018-12-08 15:49:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2018-12-08 15:49:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-08 15:49:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2018-12-08 15:49:51,498 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-12-08 15:49:51,499 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-12-08 15:49:51,499 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-08 15:49:51,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2018-12-08 15:49:51,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 15:49:51,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 15:49:51,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 15:49:51,499 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1] [2018-12-08 15:49:51,499 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 15:49:51,499 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 [2018-12-08 15:49:51,499 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 [2018-12-08 15:49:51,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1363962694, now seen corresponding path program 7 times [2018-12-08 15:49:51,500 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:51,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:51,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:51,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,505 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 2 times [2018-12-08 15:49:51,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:51,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:51,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:49:51,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash 872985485, now seen corresponding path program 8 times [2018-12-08 15:49:51,508 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 15:49:51,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 15:49:51,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 15:49:51,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:49:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:49:51,540 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:51,541 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:51,541 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:51,541 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:51,541 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 15:49:51,541 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:51,541 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:51,541 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:51,541 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-12-08 15:49:51,541 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:51,541 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:51,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,606 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:51,606 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:51,608 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:51,622 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 15:49:51,622 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_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,625 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:51,625 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:51,639 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 15:49:51,640 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_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 15:49:51,643 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b648f5d-c1af-46e7-8f2b-e8dcb66ab45a/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 [2018-12-08 15:49:51,661 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 15:49:51,661 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 15:49:51,810 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 15:49:51,812 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 15:49:51,812 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 15:49:51,812 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 15:49:51,812 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 15:49:51,812 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 15:49:51,812 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 15:49:51,812 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 15:49:51,812 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 15:49:51,812 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-12-08 15:49:51,812 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 15:49:51,812 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 15:49:51,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 15:49:51,881 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 15:49:51,881 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 15:49:51,881 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 [2018-12-08 15:49:51,882 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:51,882 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:51,882 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:51,882 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:51,883 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 15:49:51,883 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 15:49:51,884 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 15:49:51,884 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 [2018-12-08 15:49:51,885 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:51,885 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:51,885 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 15:49:51,885 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:51,886 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 15:49:51,886 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 15:49:51,887 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 15:49:51,887 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 [2018-12-08 15:49:51,887 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 15:49:51,887 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 15:49:51,887 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 15:49:51,887 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 15:49:51,887 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 15:49:51,888 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 15:49:51,888 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 15:49:51,892 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 15:49:51,894 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 15:49:51,894 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 15:49:51,895 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 15:49:51,895 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 15:49:51,895 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 15:49:51,895 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-12-08 15:49:51,895 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 15:49:51,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:51,915 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 [2018-12-08 15:49:51,915 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-12-08 15:49:51,924 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. [2018-12-08 15:49:51,925 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 [2018-12-08 15:49:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 15:49:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-12-08 15:49:51,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-08 15:49:51,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,925 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 15:49:51,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:51,943 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 [2018-12-08 15:49:51,943 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-12-08 15:49:51,952 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. [2018-12-08 15:49:51,952 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 [2018-12-08 15:49:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 15:49:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-12-08 15:49:51,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-08 15:49:51,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,952 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 15:49:51,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:49:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:49:51,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:49:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:49:51,968 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 [2018-12-08 15:49:51,968 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-12-08 15:49:51,978 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. [2018-12-08 15:49:51,978 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 [2018-12-08 15:49:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 15:49:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-12-08 15:49:51,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-08 15:49:51,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 3 letters. [2018-12-08 15:49:51,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 6 letters. [2018-12-08 15:49:51,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 15:49:51,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 57 transitions. [2018-12-08 15:49:51,979 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 15:49:51,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2018-12-08 15:49:51,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 15:49:51,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 15:49:51,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 15:49:51,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 15:49:51,980 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 15:49:51,980 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 15:49:51,980 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 15:49:51,980 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-08 15:49:51,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 15:49:51,980 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 15:49:51,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 15:49:51,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 03:49:51 BoogieIcfgContainer [2018-12-08 15:49:51,984 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 15:49:51,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 15:49:51,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 15:49:51,984 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 15:49:51,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:49:49" (3/4) ... [2018-12-08 15:49:51,987 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 15:49:51,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 15:49:51,987 INFO L168 Benchmark]: Toolchain (without parser) took 2604.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -101.0 MB). Peak memory consumption was 119.2 MB. Max. memory is 11.5 GB. [2018-12-08 15:49:51,988 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:49:51,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 15:49:51,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.10 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:49:51,989 INFO L168 Benchmark]: Boogie Preprocessor took 12.78 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 15:49:51,989 INFO L168 Benchmark]: RCFGBuilder took 130.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-08 15:49:51,989 INFO L168 Benchmark]: BuchiAutomizer took 2307.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.4 MB). Peak memory consumption was 148.4 MB. Max. memory is 11.5 GB. [2018-12-08 15:49:51,990 INFO L168 Benchmark]: Witness Printer took 2.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:49:51,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.82 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 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 20.10 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.78 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 130.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2307.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.4 MB). Peak memory consumption was 148.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 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 2.2s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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: inital20 mio100 ax162 hnf99 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp93 dnf112 smp98 tf107 neg98 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...