./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/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 ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:33:16,179 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:33:16,180 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:33:16,188 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:33:16,188 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:33:16,189 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:33:16,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:33:16,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:33:16,191 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:33:16,192 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:33:16,193 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:33:16,193 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:33:16,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:33:16,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:33:16,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:33:16,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:33:16,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:33:16,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:33:16,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:33:16,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:33:16,200 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:33:16,201 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:33:16,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:33:16,203 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:33:16,203 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:33:16,204 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:33:16,205 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:33:16,205 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:33:16,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:33:16,206 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:33:16,207 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:33:16,207 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:33:16,207 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:33:16,207 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:33:16,208 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:33:16,208 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:33:16,209 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 13:33:16,220 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:33:16,220 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:33:16,221 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:33:16,221 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:33:16,222 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:33:16,222 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 13:33:16,222 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 13:33:16,222 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 13:33:16,222 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 13:33:16,222 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 13:33:16,222 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 13:33:16,223 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:33:16,223 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:33:16,223 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:33:16,223 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:33:16,223 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 13:33:16,223 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 13:33:16,223 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 13:33:16,224 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:33:16,224 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 13:33:16,224 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:33:16,224 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 13:33:16,224 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:33:16,224 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:33:16,225 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 13:33:16,225 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:33:16,225 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:33:16,225 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 13:33:16,226 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 13:33:16,226 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_7a8e69b3-ff03-4558-b52f-db72aff916ab/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 -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2018-11-28 13:33:16,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:33:16,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:33:16,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:33:16,259 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:33:16,259 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:33:16,259 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c [2018-11-28 13:33:16,297 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/data/48a47ae16/eb70d61cc1de4385b56fe2d1eaf62728/FLAGad2e2943b [2018-11-28 13:33:16,694 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:33:16,694 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c [2018-11-28 13:33:16,698 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/data/48a47ae16/eb70d61cc1de4385b56fe2d1eaf62728/FLAGad2e2943b [2018-11-28 13:33:16,706 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/data/48a47ae16/eb70d61cc1de4385b56fe2d1eaf62728 [2018-11-28 13:33:16,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:33:16,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:33:16,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:33:16,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:33:16,711 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:33:16,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e991360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16, skipping insertion in model container [2018-11-28 13:33:16,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:33:16,730 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:33:16,820 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:33:16,823 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:33:16,833 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:33:16,841 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:33:16,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16 WrapperNode [2018-11-28 13:33:16,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:33:16,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:33:16,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:33:16,842 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:33:16,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:33:16,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:33:16,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:33:16,863 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:33:16,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... [2018-11-28 13:33:16,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:33:16,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:33:16,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:33:16,915 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:33:16,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:33:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:33:17,072 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:33:17,072 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-28 13:33:17,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:33:17 BoogieIcfgContainer [2018-11-28 13:33:17,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:33:17,074 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 13:33:17,074 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 13:33:17,077 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 13:33:17,078 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:33:17,078 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 01:33:16" (1/3) ... [2018-11-28 13:33:17,080 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4829db28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:33:17, skipping insertion in model container [2018-11-28 13:33:17,084 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:33:17,085 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:33:16" (2/3) ... [2018-11-28 13:33:17,090 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4829db28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:33:17, skipping insertion in model container [2018-11-28 13:33:17,091 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:33:17,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:33:17" (3/3) ... [2018-11-28 13:33:17,092 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c [2018-11-28 13:33:17,146 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:33:17,146 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 13:33:17,146 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 13:33:17,146 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 13:33:17,147 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:33:17,147 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:33:17,147 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 13:33:17,147 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:33:17,147 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 13:33:17,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-28 13:33:17,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:33:17,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:17,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:17,184 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 13:33:17,184 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:33:17,184 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 13:33:17,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-28 13:33:17,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:33:17,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:17,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:17,185 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 13:33:17,186 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:33:17,192 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L21true assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 5#L23-2true [2018-11-28 13:33:17,193 INFO L796 eck$LassoCheckResult]: Loop: 5#L23-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 8#L25-2true assume !(main_~j~0 < main_~m~0); 7#L25-3true main_~i~0 := 1 + main_~i~0; 5#L23-2true [2018-11-28 13:33:17,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:17,198 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-28 13:33:17,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:17,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:17,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:17,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash 42943, now seen corresponding path program 1 times [2018-11-28 13:33:17,292 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:17,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:17,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:17,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:17,301 INFO L82 PathProgramCache]: Analyzing trace with hash 29684988, now seen corresponding path program 1 times [2018-11-28 13:33:17,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:17,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:17,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:17,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,381 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:17,381 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:17,382 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:17,382 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:17,382 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:17,382 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:17,382 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:17,382 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:17,382 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 13:33:17,382 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:17,383 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:17,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,475 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:17,475 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:17,491 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:17,491 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:17,510 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:17,510 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_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:17,513 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:17,513 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:17,529 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:17,529 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_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:17,531 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:17,532 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:17,549 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:17,549 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:17,644 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:33:17,645 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:17,645 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:17,645 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:17,645 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:17,646 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:17,646 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:17,646 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:17,646 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:17,646 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 13:33:17,646 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:17,646 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:17,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,739 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:17,743 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:17,744 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:17,746 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:17,746 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:17,746 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:17,746 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:17,750 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:17,750 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:17,756 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:17,757 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:17,758 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:17,758 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:17,758 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:17,758 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:17,760 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:17,760 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:17,767 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:17,767 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:17,768 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:17,768 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:17,768 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:17,768 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:17,769 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:17,769 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:17,769 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:17,773 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:17,779 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:33:17,779 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:17,781 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:17,781 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:17,781 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:17,782 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 13:33:17,783 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:17,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:17,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:17,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:17,876 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 13:33:17,877 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2018-11-28 13:33:17,916 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 42 states and 62 transitions. Complement of second has 8 states. [2018-11-28 13:33:17,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:33:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2018-11-28 13:33:17,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 13:33:17,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:17,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 13:33:17,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:17,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 13:33:17,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:17,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2018-11-28 13:33:17,923 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:33:17,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 14 states and 21 transitions. [2018-11-28 13:33:17,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 13:33:17,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-28 13:33:17,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2018-11-28 13:33:17,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:17,927 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2018-11-28 13:33:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2018-11-28 13:33:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-28 13:33:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 13:33:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2018-11-28 13:33:17,943 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2018-11-28 13:33:17,943 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2018-11-28 13:33:17,944 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 13:33:17,944 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2018-11-28 13:33:17,944 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:33:17,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:17,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:17,945 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 13:33:17,945 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 13:33:17,945 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 98#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 99#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 104#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 96#L28-2 [2018-11-28 13:33:17,945 INFO L796 eck$LassoCheckResult]: Loop: 96#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 96#L28-2 [2018-11-28 13:33:17,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2018-11-28 13:33:17,946 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:17,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:17,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:17,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 1 times [2018-11-28 13:33:17,957 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:17,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:17,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:17,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:17,961 INFO L82 PathProgramCache]: Analyzing trace with hash 29685042, now seen corresponding path program 1 times [2018-11-28 13:33:17,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:17,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:17,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:17,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:17,976 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:17,976 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:17,976 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:17,976 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:17,976 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:17,976 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:17,976 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:17,976 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:17,976 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 13:33:17,976 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:17,977 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:17,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:17,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,007 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:18,007 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,010 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:18,010 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:18,025 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:18,025 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_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,027 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:18,027 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:18,043 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:18,043 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,045 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:18,045 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,062 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:18,062 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:18,169 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:33:18,170 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:18,170 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:18,171 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:18,171 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:18,171 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:18,171 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,171 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:18,171 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:18,171 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 13:33:18,171 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:18,171 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:18,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,219 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:18,219 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:18,219 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:18,220 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:18,220 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:18,220 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:18,221 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:18,222 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:18,222 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:18,226 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:18,226 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:18,227 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:18,227 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:18,227 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:18,227 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:18,229 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:18,229 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:18,233 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:18,234 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:18,234 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:18,234 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:18,235 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:18,235 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:18,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:18,235 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:18,236 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:18,239 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:18,242 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:33:18,242 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:18,243 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:18,243 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:18,243 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:18,243 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] [2018-11-28 13:33:18,244 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:18,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:18,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:18,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:18,331 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 13:33:18,331 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10 Second operand 2 states. [2018-11-28 13:33:18,340 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 27 states and 43 transitions. Complement of second has 6 states. [2018-11-28 13:33:18,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 13:33:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2018-11-28 13:33:18,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-28 13:33:18,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:18,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-28 13:33:18,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:18,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 13:33:18,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:18,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 43 transitions. [2018-11-28 13:33:18,344 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 13:33:18,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 18 states and 27 transitions. [2018-11-28 13:33:18,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 13:33:18,345 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-28 13:33:18,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 27 transitions. [2018-11-28 13:33:18,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:18,345 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2018-11-28 13:33:18,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 27 transitions. [2018-11-28 13:33:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-28 13:33:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 13:33:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2018-11-28 13:33:18,347 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2018-11-28 13:33:18,347 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2018-11-28 13:33:18,348 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 13:33:18,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2018-11-28 13:33:18,348 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 13:33:18,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:18,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:18,349 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 13:33:18,349 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:33:18,349 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 181#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 182#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 180#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 188#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 175#L28-3 main_~i~0 := main_~k~0; 186#L25-2 [2018-11-28 13:33:18,349 INFO L796 eck$LassoCheckResult]: Loop: 186#L25-2 assume !(main_~j~0 < main_~m~0); 187#L25-3 main_~i~0 := 1 + main_~i~0; 189#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 186#L25-2 [2018-11-28 13:33:18,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:18,350 INFO L82 PathProgramCache]: Analyzing trace with hash 920236275, now seen corresponding path program 1 times [2018-11-28 13:33:18,350 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:18,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:18,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:18,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:18,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:18,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash 50233, now seen corresponding path program 2 times [2018-11-28 13:33:18,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:18,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:18,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:18,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:18,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:18,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 1 times [2018-11-28 13:33:18,366 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:18,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:18,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:18,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:18,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:18,404 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:18,405 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:18,405 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:18,405 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:18,405 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:18,405 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,405 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:18,405 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:18,405 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 13:33:18,405 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:18,405 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:18,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,453 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:18,454 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,467 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:18,467 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:18,487 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:18,487 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,492 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:18,492 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:18,495 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:18,495 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,512 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:18,512 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:18,529 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:18,529 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,532 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:18,532 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,550 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:18,550 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:18,901 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:33:18,902 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:18,902 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:18,902 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:18,902 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:18,902 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:18,903 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:18,903 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:18,903 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:18,903 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 13:33:18,903 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:18,903 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:18,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:18,953 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:18,953 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:18,953 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:18,954 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:18,954 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:18,954 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:18,955 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:18,955 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:18,955 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:18,955 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:18,957 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:18,957 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:18,958 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:18,958 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:18,958 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:18,958 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:18,959 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:18,959 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:18,962 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:18,963 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:18,963 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:18,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:18,963 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:18,964 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:18,964 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:18,964 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:18,964 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:18,967 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:18,970 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:33:18,970 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:18,970 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:18,971 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:18,971 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:18,971 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-28 13:33:18,971 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:18,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:18,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:18,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:19,010 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 13:33:19,010 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-28 13:33:19,027 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 31 states and 51 transitions. Complement of second has 8 states. [2018-11-28 13:33:19,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:33:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2018-11-28 13:33:19,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 13:33:19,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:33:19,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 13:33:19,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 51 transitions. [2018-11-28 13:33:19,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:33:19,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 34 transitions. [2018-11-28 13:33:19,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-28 13:33:19,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-28 13:33:19,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 34 transitions. [2018-11-28 13:33:19,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:19,030 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2018-11-28 13:33:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 34 transitions. [2018-11-28 13:33:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-28 13:33:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 13:33:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2018-11-28 13:33:19,031 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-11-28 13:33:19,031 INFO L608 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-11-28 13:33:19,031 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 13:33:19,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2018-11-28 13:33:19,031 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:33:19,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:19,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:19,032 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 13:33:19,032 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 13:33:19,032 INFO L794 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 277#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 278#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 288#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 287#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 276#L28-3 main_~i~0 := main_~k~0; 286#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 273#L28-2 [2018-11-28 13:33:19,032 INFO L796 eck$LassoCheckResult]: Loop: 273#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 273#L28-2 [2018-11-28 13:33:19,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 2 times [2018-11-28 13:33:19,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:19,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 2 times [2018-11-28 13:33:19,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:19,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash -416201988, now seen corresponding path program 1 times [2018-11-28 13:33:19,047 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:19,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:19,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:33:19,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:33:19,091 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:19,092 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:19,092 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:19,092 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:19,092 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:19,092 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,092 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:19,092 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:19,092 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 13:33:19,092 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:19,092 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:19,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,130 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:19,130 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,135 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:19,135 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,152 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:19,152 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:19,259 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:33:19,261 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:19,261 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:19,261 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:19,261 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:19,261 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:19,261 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,261 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:19,262 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:19,262 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 13:33:19,262 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:19,262 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:19,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,294 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:19,295 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:19,295 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:19,295 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:19,295 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:19,296 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:19,296 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:19,296 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:19,296 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:19,296 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:19,297 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:19,299 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:33:19,299 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:19,299 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:19,299 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:19,299 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:19,300 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] [2018-11-28 13:33:19,300 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:19,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:19,326 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 13:33:19,326 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2018-11-28 13:33:19,332 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2018-11-28 13:33:19,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 13:33:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-28 13:33:19,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 13:33:19,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,333 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:33:19,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:19,346 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 13:33:19,347 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2018-11-28 13:33:19,352 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2018-11-28 13:33:19,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 13:33:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-28 13:33:19,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 13:33:19,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,353 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:33:19,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:19,368 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 13:33:19,368 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2018-11-28 13:33:19,377 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 36 states and 60 transitions. Complement of second has 5 states. [2018-11-28 13:33:19,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 13:33:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2018-11-28 13:33:19,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 13:33:19,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,379 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-28 13:33:19,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,379 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-28 13:33:19,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 60 transitions. [2018-11-28 13:33:19,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 13:33:19,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 22 states and 33 transitions. [2018-11-28 13:33:19,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 13:33:19,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-28 13:33:19,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2018-11-28 13:33:19,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:19,383 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-11-28 13:33:19,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2018-11-28 13:33:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-28 13:33:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 13:33:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2018-11-28 13:33:19,385 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2018-11-28 13:33:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:33:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:33:19,387 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand 4 states. [2018-11-28 13:33:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:33:19,416 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2018-11-28 13:33:19,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:33:19,416 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2018-11-28 13:33:19,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:33:19,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 26 transitions. [2018-11-28 13:33:19,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-28 13:33:19,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 13:33:19,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2018-11-28 13:33:19,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:19,417 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-11-28 13:33:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2018-11-28 13:33:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 13:33:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 13:33:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2018-11-28 13:33:19,419 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-11-28 13:33:19,419 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-11-28 13:33:19,419 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 13:33:19,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2018-11-28 13:33:19,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:33:19,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:19,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:19,420 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 13:33:19,420 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:33:19,420 INFO L794 eck$LassoCheckResult]: Stem: 535#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 533#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 534#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 540#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 539#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 528#L28-3 main_~i~0 := main_~k~0; 538#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2018-11-28 13:33:19,420 INFO L796 eck$LassoCheckResult]: Loop: 525#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 526#L28-3 main_~i~0 := main_~k~0; 530#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2018-11-28 13:33:19,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 3 times [2018-11-28 13:33:19,420 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:19,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,427 INFO L82 PathProgramCache]: Analyzing trace with hash 58767, now seen corresponding path program 1 times [2018-11-28 13:33:19,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:19,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash -538152755, now seen corresponding path program 4 times [2018-11-28 13:33:19,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:19,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,472 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:19,472 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:19,472 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:19,472 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:19,472 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:19,473 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,473 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:19,473 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:19,473 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 13:33:19,473 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:19,473 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:19,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,513 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:19,513 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,515 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:19,515 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:19,519 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:19,519 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=1, ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~N~0=-7} Honda state: {ULTIMATE.start_main_~k~0=1, ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~N~0=-7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,535 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:19,535 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:19,550 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:19,550 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,554 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:19,555 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:19,570 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:19,570 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,573 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:19,573 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,594 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:19,594 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:19,697 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:33:19,699 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:19,699 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:19,699 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:19,699 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:19,700 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:19,700 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,700 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:19,700 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:19,700 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 13:33:19,700 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:19,700 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:19,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,764 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:19,764 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:19,764 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:19,765 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:19,765 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:19,765 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:19,765 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:19,765 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:19,766 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:19,767 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:19,767 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:19,768 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:19,768 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:19,768 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:19,768 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:19,769 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:19,769 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:19,772 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:19,772 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:19,772 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:19,772 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:19,773 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:19,773 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:19,773 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:19,773 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:19,773 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:19,774 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:19,775 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:19,775 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:19,775 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:19,775 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:19,775 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:19,776 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:19,776 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:19,776 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:19,777 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:19,780 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:33:19,780 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:19,780 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:19,780 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:19,780 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:19,780 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-28 13:33:19,781 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:19,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:19,807 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 13:33:19,808 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-11-28 13:33:19,814 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 5 states. [2018-11-28 13:33:19,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:33:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-28 13:33:19,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-28 13:33:19,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2018-11-28 13:33:19,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 6 letters. [2018-11-28 13:33:19,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:19,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2018-11-28 13:33:19,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:33:19,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 33 states and 44 transitions. [2018-11-28 13:33:19,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-28 13:33:19,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 13:33:19,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2018-11-28 13:33:19,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:19,817 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2018-11-28 13:33:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2018-11-28 13:33:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-11-28 13:33:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 13:33:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2018-11-28 13:33:19,818 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2018-11-28 13:33:19,818 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2018-11-28 13:33:19,818 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 13:33:19,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 35 transitions. [2018-11-28 13:33:19,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:33:19,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:19,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:19,819 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-11-28 13:33:19,819 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:33:19,819 INFO L794 eck$LassoCheckResult]: Stem: 640#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 635#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 636#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 637#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 651#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 647#L28-3 main_~i~0 := main_~k~0; 648#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 649#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 650#L28-3 main_~i~0 := main_~k~0; 655#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2018-11-28 13:33:19,819 INFO L796 eck$LassoCheckResult]: Loop: 641#L25-3 main_~i~0 := 1 + main_~i~0; 642#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 653#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2018-11-28 13:33:19,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,819 INFO L82 PathProgramCache]: Analyzing trace with hash -538152757, now seen corresponding path program 1 times [2018-11-28 13:33:19,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:19,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,827 INFO L82 PathProgramCache]: Analyzing trace with hash 67693, now seen corresponding path program 3 times [2018-11-28 13:33:19,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:19,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:19,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1004170083, now seen corresponding path program 2 times [2018-11-28 13:33:19,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:19,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 13:33:19,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:33:19,860 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:33:19,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:33:19,872 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:33:19,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:33:19,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 13:33:19,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:33:19,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 13:33:19,938 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:19,938 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:19,938 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:19,938 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:19,938 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:19,938 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,938 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:19,938 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:19,938 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 13:33:19,939 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:19,939 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:19,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:19,968 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:19,968 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,970 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:19,970 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:19,985 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:19,985 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_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:19,988 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:19,988 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:20,003 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:20,003 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_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:20,006 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:20,006 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:20,023 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:20,023 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:20,281 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:33:20,282 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:20,282 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:20,282 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:20,282 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:20,282 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:20,282 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:20,282 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:20,282 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:20,283 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 13:33:20,283 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:20,283 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:20,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,316 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:20,316 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:20,316 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:20,317 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:20,317 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:20,317 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:20,317 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:20,317 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:20,317 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:20,317 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:20,318 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:20,318 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:20,318 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:20,318 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:20,318 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:20,319 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:20,319 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:20,319 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:20,321 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:20,322 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:20,322 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:20,322 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:20,322 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:20,322 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:20,322 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:20,323 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:20,323 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:20,324 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:20,326 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:33:20,326 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:20,326 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:20,326 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:20,327 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:20,327 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 13:33:20,327 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:20,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:20,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:20,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:20,372 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:33:20,372 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-11-28 13:33:20,389 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 65 states and 90 transitions. Complement of second has 7 states. [2018-11-28 13:33:20,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:33:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 13:33:20,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2018-11-28 13:33:20,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:20,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-28 13:33:20,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:20,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 6 letters. [2018-11-28 13:33:20,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:20,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 90 transitions. [2018-11-28 13:33:20,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:33:20,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 50 states and 68 transitions. [2018-11-28 13:33:20,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-11-28 13:33:20,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-28 13:33:20,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 68 transitions. [2018-11-28 13:33:20,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:20,394 INFO L705 BuchiCegarLoop]: Abstraction has 50 states and 68 transitions. [2018-11-28 13:33:20,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 68 transitions. [2018-11-28 13:33:20,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2018-11-28 13:33:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 13:33:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-11-28 13:33:20,396 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-11-28 13:33:20,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:33:20,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:33:20,396 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2018-11-28 13:33:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:33:20,424 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-11-28 13:33:20,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:33:20,425 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 49 transitions. [2018-11-28 13:33:20,426 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 13:33:20,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 49 transitions. [2018-11-28 13:33:20,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-28 13:33:20,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-11-28 13:33:20,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 49 transitions. [2018-11-28 13:33:20,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:20,427 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2018-11-28 13:33:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 49 transitions. [2018-11-28 13:33:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2018-11-28 13:33:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 13:33:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2018-11-28 13:33:20,429 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-11-28 13:33:20,429 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-11-28 13:33:20,429 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 13:33:20,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2018-11-28 13:33:20,429 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 13:33:20,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:20,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:20,430 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:33:20,430 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 13:33:20,430 INFO L794 eck$LassoCheckResult]: Stem: 909#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 907#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 908#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 916#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 917#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 901#L28-3 main_~i~0 := main_~k~0; 912#L25-2 assume !(main_~j~0 < main_~m~0); 910#L25-3 [2018-11-28 13:33:20,430 INFO L796 eck$LassoCheckResult]: Loop: 910#L25-3 main_~i~0 := 1 + main_~i~0; 902#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 903#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 898#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 899#L28-3 main_~i~0 := main_~k~0; 920#L25-2 assume !(main_~j~0 < main_~m~0); 910#L25-3 [2018-11-28 13:33:20,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446527, now seen corresponding path program 2 times [2018-11-28 13:33:20,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:20,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:20,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:20,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:20,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:20,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:20,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2016730719, now seen corresponding path program 1 times [2018-11-28 13:33:20,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:20,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:20,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:20,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:20,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:20,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:20,442 INFO L82 PathProgramCache]: Analyzing trace with hash -504812577, now seen corresponding path program 3 times [2018-11-28 13:33:20,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:20,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:20,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:20,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:33:20,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:20,486 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:20,486 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:20,486 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:20,486 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:20,486 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:20,486 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:20,486 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:20,486 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:20,487 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-28 13:33:20,487 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:20,487 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:20,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:20,531 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:20,532 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:20,533 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:20,533 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:20,536 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:20,536 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:20,551 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:20,551 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:20,570 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:20,570 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:32,589 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 13:33:32,592 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:32,592 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:32,592 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:32,592 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:32,592 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:32,592 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:32,592 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:32,592 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:32,592 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-28 13:33:32,592 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:32,593 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:32,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,637 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:32,637 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:32,637 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:32,638 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:32,638 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:32,638 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:32,638 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:32,638 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:32,638 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:32,638 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:32,640 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:32,648 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:33:32,648 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:32,648 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:32,648 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:32,648 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:32,649 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 13:33:32,649 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:32,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:32,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:32,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:32,691 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-28 13:33:32,691 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2018-11-28 13:33:32,705 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 49 states and 69 transitions. Complement of second has 7 states. [2018-11-28 13:33:32,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 13:33:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 13:33:32,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2018-11-28 13:33:32,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:32,706 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:33:32,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:32,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:32,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:32,745 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-28 13:33:32,745 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2018-11-28 13:33:32,800 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 56 states and 79 transitions. Complement of second has 10 states. [2018-11-28 13:33:32,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 13:33:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2018-11-28 13:33:32,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 6 letters. [2018-11-28 13:33:32,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:32,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2018-11-28 13:33:32,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:32,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 12 letters. [2018-11-28 13:33:32,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:32,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 79 transitions. [2018-11-28 13:33:32,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:33:32,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 43 states and 60 transitions. [2018-11-28 13:33:32,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-28 13:33:32,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-28 13:33:32,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 60 transitions. [2018-11-28 13:33:32,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:33:32,804 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 60 transitions. [2018-11-28 13:33:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 60 transitions. [2018-11-28 13:33:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2018-11-28 13:33:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 13:33:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2018-11-28 13:33:32,807 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2018-11-28 13:33:32,807 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2018-11-28 13:33:32,808 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 13:33:32,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 52 transitions. [2018-11-28 13:33:32,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:33:32,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:33:32,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:33:32,809 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:33:32,809 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:33:32,809 INFO L794 eck$LassoCheckResult]: Stem: 1160#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 1158#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 1159#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1174#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1171#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1168#L28-3 main_~i~0 := main_~k~0; 1167#L25-2 assume !(main_~j~0 < main_~m~0); 1161#L25-3 main_~i~0 := 1 + main_~i~0; 1154#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1155#L25-2 [2018-11-28 13:33:32,809 INFO L796 eck$LassoCheckResult]: Loop: 1155#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1150#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1151#L28-3 main_~i~0 := main_~k~0; 1155#L25-2 [2018-11-28 13:33:32,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:32,809 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 4 times [2018-11-28 13:33:32,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:32,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:32,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:32,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:32,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:32,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:32,817 INFO L82 PathProgramCache]: Analyzing trace with hash 51867, now seen corresponding path program 2 times [2018-11-28 13:33:32,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:32,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:32,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:32,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:32,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:32,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:32,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1817399595, now seen corresponding path program 5 times [2018-11-28 13:33:32,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:33:32,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:33:32,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:32,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:33:32,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:33:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:33:32,866 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:32,866 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:32,866 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:32,866 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:32,867 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:33:32,867 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:32,867 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:32,867 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:32,867 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-28 13:33:32,867 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:32,867 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:32,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:32,901 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:32,901 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:32,904 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:32,904 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:32,918 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:32,918 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:32,922 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:32,922 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:32,936 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:32,937 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:32,939 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:32,939 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:32,943 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:33:32,943 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=-7, ULTIMATE.start_main_~i~0=-7, ULTIMATE.start_main_~N~0=-6} Honda state: {ULTIMATE.start_main_~k~0=-7, ULTIMATE.start_main_~i~0=-7, ULTIMATE.start_main_~N~0=-6} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:32,958 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:33:32,958 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7a8e69b3-ff03-4558-b52f-db72aff916ab/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:32,975 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:33:32,975 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:33:33,081 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:33:33,083 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:33:33,083 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:33:33,083 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:33:33,083 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:33:33,083 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:33:33,084 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:33:33,084 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:33:33,084 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:33:33,084 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-28 13:33:33,084 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:33:33,084 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:33:33,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:33,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:33,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:33,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:33:33,153 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:33:33,153 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:33:33,153 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:33,154 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:33,154 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:33,154 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:33,154 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:33,155 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:33:33,155 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:33:33,157 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:33,157 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:33,158 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:33,158 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:33,158 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:33,159 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:33,160 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:33,160 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:33,160 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:33,161 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:33:33,161 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:33:33,162 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:33:33,162 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:33:33,162 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:33:33,162 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:33:33,162 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:33:33,163 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:33:33,163 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:33:33,164 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:33:33,165 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:33:33,166 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:33:33,166 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:33:33,166 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:33:33,166 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:33:33,166 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-28 13:33:33,167 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:33:33,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:33,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:33,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:33,198 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 13:33:33,198 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2018-11-28 13:33:33,204 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 55 states and 81 transitions. Complement of second has 5 states. [2018-11-28 13:33:33,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:33:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2018-11-28 13:33:33,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:33:33,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:33,206 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:33:33,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:33,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:33,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:33,235 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 13:33:33,235 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2018-11-28 13:33:33,244 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 51 states and 75 transitions. Complement of second has 7 states. [2018-11-28 13:33:33,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:33:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-28 13:33:33,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:33:33,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:33,244 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:33:33,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:33:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:33,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:33:33,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:33,264 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 13:33:33,264 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2018-11-28 13:33:33,270 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 69 states and 104 transitions. Complement of second has 4 states. [2018-11-28 13:33:33,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:33:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:33:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2018-11-28 13:33:33,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:33:33,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:33,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 13:33:33,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:33,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 13:33:33,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:33:33,272 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 104 transitions. [2018-11-28 13:33:33,273 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:33:33,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 0 states and 0 transitions. [2018-11-28 13:33:33,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 13:33:33,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 13:33:33,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 13:33:33,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:33:33,273 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:33:33,273 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:33:33,274 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:33:33,274 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-28 13:33:33,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:33:33,274 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:33:33,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 13:33:33,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 01:33:33 BoogieIcfgContainer [2018-11-28 13:33:33,279 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 13:33:33,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:33:33,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:33:33,279 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:33:33,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:33:17" (3/4) ... [2018-11-28 13:33:33,282 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:33:33,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:33:33,282 INFO L168 Benchmark]: Toolchain (without parser) took 16573.98 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.9 MB). Free memory was 953.3 MB in the beginning and 926.8 MB in the end (delta: 26.5 MB). Peak memory consumption was 250.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:33:33,283 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-11-28 13:33:33,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 941.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:33:33,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.08 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:33:33,284 INFO L168 Benchmark]: Boogie Preprocessor took 51.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -205.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:33:33,285 INFO L168 Benchmark]: RCFGBuilder took 158.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:33:33,285 INFO L168 Benchmark]: BuchiAutomizer took 16204.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 926.8 MB in the end (delta: 198.3 MB). Peak memory consumption was 280.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:33:33,285 INFO L168 Benchmark]: Witness Printer took 2.87 ms. Allocated memory is still 1.3 GB. Free memory is still 926.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:33:33,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 132.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 941.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.08 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -205.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 158.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 16204.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 926.8 MB in the end (delta: 198.3 MB). Peak memory consumption was 280.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.87 ms. Allocated memory is still 1.3 GB. Free memory is still 926.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (2 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * k + N and consists of 4 locations. One deterministic module has affine ranking function -1 * i + n and consists of 5 locations. One deterministic module has affine ranking function m + -1 * j and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function n + -1 * i and consists of 6 locations. One nondeterministic module has affine ranking function -1 * k + N and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.1s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 15.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 49 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 163 SDtfs, 160 SDslu, 63 SDs, 0 SdLazy, 133 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax169 hnf97 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 13.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...