./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:46:15,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:46:15,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:46:15,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:46:15,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:46:15,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:46:15,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:46:15,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:46:15,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:46:15,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:46:15,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:46:15,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:46:15,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:46:15,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:46:15,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:46:15,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:46:15,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:46:15,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:46:15,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:46:15,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:46:15,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:46:15,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:46:15,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:46:15,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:46:15,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:46:15,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:46:15,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:46:15,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:46:15,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:46:15,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:46:15,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:46:15,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:46:15,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:46:15,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:46:15,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:46:15,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:46:15,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:46:15,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:46:15,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:46:15,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:46:15,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:46:15,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 14:46:15,358 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:46:15,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:46:15,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:46:15,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:46:15,359 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:46:15,360 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 14:46:15,360 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 14:46:15,360 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 14:46:15,360 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 14:46:15,360 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 14:46:15,360 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 14:46:15,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:46:15,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:46:15,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:46:15,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:46:15,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 14:46:15,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 14:46:15,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 14:46:15,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:46:15,362 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 14:46:15,362 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:46:15,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 14:46:15,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:46:15,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:46:15,363 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 14:46:15,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:46:15,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:46:15,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:46:15,363 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 14:46:15,364 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 14:46:15,364 INFO L138 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2019-12-07 14:46:15,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:46:15,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:46:15,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:46:15,482 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:46:15,482 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:46:15,483 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-12-07 14:46:15,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/data/d8648adb3/274163e948b0495d899d43b11129f530/FLAGaecae98e5 [2019-12-07 14:46:15,841 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:46:15,842 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-12-07 14:46:15,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/data/d8648adb3/274163e948b0495d899d43b11129f530/FLAGaecae98e5 [2019-12-07 14:46:15,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/data/d8648adb3/274163e948b0495d899d43b11129f530 [2019-12-07 14:46:15,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:46:15,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:46:15,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:46:15,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:46:15,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:46:15,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:46:15" (1/1) ... [2019-12-07 14:46:15,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8ebb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:15, skipping insertion in model container [2019-12-07 14:46:15,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:46:15" (1/1) ... [2019-12-07 14:46:15,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:46:15,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:46:15,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:46:15,974 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:46:16,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:46:16,027 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:46:16,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16 WrapperNode [2019-12-07 14:46:16,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:46:16,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:46:16,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:46:16,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:46:16,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:46:16,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:46:16,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:46:16,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:46:16,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... [2019-12-07 14:46:16,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:46:16,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:46:16,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:46:16,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:46:16,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:46:16,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:46:16,188 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:46:16,188 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 14:46:16,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:46:16 BoogieIcfgContainer [2019-12-07 14:46:16,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:46:16,189 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 14:46:16,189 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 14:46:16,191 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 14:46:16,192 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:46:16,192 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 02:46:15" (1/3) ... [2019-12-07 14:46:16,192 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c361f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:46:16, skipping insertion in model container [2019-12-07 14:46:16,193 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:46:16,193 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:46:16" (2/3) ... [2019-12-07 14:46:16,193 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c361f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:46:16, skipping insertion in model container [2019-12-07 14:46:16,193 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:46:16,193 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:46:16" (3/3) ... [2019-12-07 14:46:16,194 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-12-07 14:46:16,223 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 14:46:16,223 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 14:46:16,223 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 14:46:16,223 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:46:16,224 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:46:16,224 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 14:46:16,224 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:46:16,224 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 14:46:16,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 14:46:16,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:16,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:16,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:16,249 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:46:16,249 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:46:16,249 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 14:46:16,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 14:46:16,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:16,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:16,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:16,251 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:46:16,251 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:46:16,255 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2019-12-07 14:46:16,256 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2019-12-07 14:46:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 14:46:16,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:16,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978503841] [2019-12-07 14:46:16,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,331 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:16,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:16,332 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2019-12-07 14:46:16,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:16,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251489536] [2019-12-07 14:46:16,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,343 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:16,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:16,344 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2019-12-07 14:46:16,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:16,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142597311] [2019-12-07 14:46:16,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,355 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:16,387 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:16,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:16,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:16,387 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:16,387 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:16,387 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:16,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:16,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:16,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2019-12-07 14:46:16,388 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:16,388 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:16,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,481 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:16,482 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,493 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:16,493 INFO L440 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:16,500 INFO L440 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,508 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:16,508 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,516 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:16,516 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,520 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:16,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,533 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:16,534 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:16,534 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:16,534 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:16,534 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:16,535 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:16,535 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:16,535 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:16,535 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:16,535 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2019-12-07 14:46:16,535 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:16,535 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:16,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,587 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:16,591 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,595 INFO L120 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 [2019-12-07 14:46:16,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:16,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:16,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:16,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:16,601 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:46:16,601 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:46:16,604 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,608 INFO L120 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 [2019-12-07 14:46:16,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:16,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:16,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:16,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:16,612 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:46:16,612 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:46:16,616 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,619 INFO L120 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 [2019-12-07 14:46:16,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:16,621 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:16,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:16,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:16,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:16,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:16,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:16,623 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,626 INFO L120 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 [2019-12-07 14:46:16,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:16,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:16,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:16,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:16,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:16,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:16,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:16,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,634 INFO L120 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 [2019-12-07 14:46:16,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:16,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:16,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:16,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:16,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:16,637 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:16,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:16,639 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:16,641 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:16,642 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:16,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:16,645 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:16,646 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-12-07 14:46:16,648 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:16,674 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:16,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:16,681 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:16,681 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:16,701 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 [2019-12-07 14:46:16,702 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-12-07 14:46:16,739 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2019-12-07 14:46:16,739 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 [2019-12-07 14:46:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:46:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2019-12-07 14:46:16,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 14:46:16,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:16,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 14:46:16,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:16,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 14:46:16,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:16,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2019-12-07 14:46:16,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:16,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2019-12-07 14:46:16,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 14:46:16,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-12-07 14:46:16,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-12-07 14:46:16,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:16,750 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 14:46:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-12-07 14:46:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 14:46:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 14:46:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-12-07 14:46:16,770 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 14:46:16,770 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 14:46:16,770 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 14:46:16,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-12-07 14:46:16,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:16,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:16,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:16,771 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:46:16,771 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 14:46:16,771 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2019-12-07 14:46:16,772 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2019-12-07 14:46:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:16,772 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2019-12-07 14:46:16,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:16,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969825822] [2019-12-07 14:46:16,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,782 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:16,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:16,782 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-12-07 14:46:16,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:16,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686459060] [2019-12-07 14:46:16,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,787 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:16,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:16,787 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2019-12-07 14:46:16,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:16,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633699520] [2019-12-07 14:46:16,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:16,799 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:16,809 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:16,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:16,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:16,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:16,809 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:16,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:16,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:16,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:16,809 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2019-12-07 14:46:16,809 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:16,809 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:16,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:16,851 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:16,851 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:16,857 INFO L440 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:16,865 INFO L440 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:16,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:16,872 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:16,876 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:16,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:16,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:17,011 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:17,013 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:17,013 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:17,013 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:17,013 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:17,013 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:17,013 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,013 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:17,013 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:17,013 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2019-12-07 14:46:17,013 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:17,013 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:17,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,054 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:17,054 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,057 INFO L120 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 [2019-12-07 14:46:17,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:17,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:17,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:17,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:17,061 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:46:17,061 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:46:17,065 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,074 INFO L120 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 [2019-12-07 14:46:17,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:17,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:17,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:17,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:17,077 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:46:17,078 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:46:17,081 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,084 INFO L120 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 [2019-12-07 14:46:17,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:17,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:17,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:17,086 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:46:17,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:17,087 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:46:17,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:17,089 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,093 INFO L120 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 [2019-12-07 14:46:17,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:17,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:17,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:17,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:17,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:17,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:17,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:17,097 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:17,099 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:17,100 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,102 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:17,102 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:17,102 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:17,102 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-12-07 14:46:17,104 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:17,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:17,120 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:17,121 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:17,124 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:17,125 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:17,125 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 [2019-12-07 14:46:17,126 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2019-12-07 14:46:17,136 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2019-12-07 14:46:17,137 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 [2019-12-07 14:46:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 14:46:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-12-07 14:46:17,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2019-12-07 14:46:17,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2019-12-07 14:46:17,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 14:46:17,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2019-12-07 14:46:17,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:17,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2019-12-07 14:46:17,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 14:46:17,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 14:46:17,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2019-12-07 14:46:17,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:17,140 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-12-07 14:46:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2019-12-07 14:46:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-12-07 14:46:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 14:46:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2019-12-07 14:46:17,142 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2019-12-07 14:46:17,142 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2019-12-07 14:46:17,142 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 14:46:17,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2019-12-07 14:46:17,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:17,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:17,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:17,144 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 14:46:17,144 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-12-07 14:46:17,144 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2019-12-07 14:46:17,144 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2019-12-07 14:46:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2019-12-07 14:46:17,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788088602] [2019-12-07 14:46:17,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,154 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,154 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2019-12-07 14:46:17,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375220881] [2019-12-07 14:46:17,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,161 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2019-12-07 14:46:17,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412996370] [2019-12-07 14:46:17,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,177 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:17,198 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:17,198 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:17,198 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:17,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:17,199 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:17,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:17,199 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:17,199 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2019-12-07 14:46:17,199 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:17,199 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:17,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,272 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:17,272 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:17,275 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:17,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:17,386 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:17,387 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:17,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:17,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:17,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:17,388 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:17,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:17,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:17,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2019-12-07 14:46:17,388 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:17,388 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:17,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,470 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:17,470 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,476 INFO L120 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 [2019-12-07 14:46:17,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:17,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:17,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:17,477 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:46:17,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:17,479 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:46:17,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:17,481 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:17,485 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:17,485 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:17,488 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:17,488 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:17,488 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 14:46:17,489 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:17,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:17,500 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:17,501 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:17,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:17,504 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:17,524 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 [2019-12-07 14:46:17,524 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-12-07 14:46:17,539 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2019-12-07 14:46:17,540 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 [2019-12-07 14:46:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:46:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-12-07 14:46:17,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2019-12-07 14:46:17,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2019-12-07 14:46:17,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2019-12-07 14:46:17,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2019-12-07 14:46:17,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:17,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2019-12-07 14:46:17,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 14:46:17,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-12-07 14:46:17,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2019-12-07 14:46:17,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:17,545 INFO L688 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2019-12-07 14:46:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2019-12-07 14:46:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-12-07 14:46:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 14:46:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2019-12-07 14:46:17,548 INFO L711 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-12-07 14:46:17,549 INFO L591 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-12-07 14:46:17,549 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 14:46:17,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2019-12-07 14:46:17,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 14:46:17,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:17,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:17,550 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-07 14:46:17,551 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-12-07 14:46:17,551 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2019-12-07 14:46:17,551 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2019-12-07 14:46:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2019-12-07 14:46:17,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431206852] [2019-12-07 14:46:17,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:46:17,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431206852] [2019-12-07 14:46:17,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:46:17,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:46:17,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587652227] [2019-12-07 14:46:17,586 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 14:46:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2019-12-07 14:46:17,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514160624] [2019-12-07 14:46:17,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:17,613 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:17,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:17,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:17,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:17,613 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:17,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:17,613 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:17,613 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2019-12-07 14:46:17,613 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:17,613 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:17,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,681 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:17,681 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:17,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:17,687 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:17,687 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=7} Honda state: {ULTIMATE.start_main_#t~nondet1=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:17,691 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:17,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:17,736 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:17,738 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:17,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:17,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:17,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:17,738 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:17,739 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,739 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:17,739 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:17,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2019-12-07 14:46:17,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:17,739 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:17,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,801 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:17,801 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,804 INFO L120 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 [2019-12-07 14:46:17,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:17,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:17,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:17,805 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:46:17,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:17,805 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:46:17,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:17,808 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,812 INFO L120 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 [2019-12-07 14:46:17,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:17,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:17,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:17,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:17,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:17,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:17,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:17,815 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:17,818 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:17,818 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,820 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:17,820 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:17,820 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:17,820 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 14:46:17,822 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:17,834 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:17,835 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:17,838 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:17,838 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:17,849 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 [2019-12-07 14:46:17,850 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-12-07 14:46:17,862 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2019-12-07 14:46:17,862 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 [2019-12-07 14:46:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:46:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2019-12-07 14:46:17,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2019-12-07 14:46:17,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2019-12-07 14:46:17,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2019-12-07 14:46:17,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:17,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2019-12-07 14:46:17,865 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 14:46:17,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2019-12-07 14:46:17,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 14:46:17,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 14:46:17,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2019-12-07 14:46:17,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:17,866 INFO L688 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2019-12-07 14:46:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2019-12-07 14:46:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2019-12-07 14:46:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 14:46:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2019-12-07 14:46:17,869 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2019-12-07 14:46:17,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:46:17,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:46:17,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:46:17,871 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2019-12-07 14:46:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:46:17,885 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2019-12-07 14:46:17,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:46:17,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2019-12-07 14:46:17,886 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 14:46:17,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2019-12-07 14:46:17,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 14:46:17,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 14:46:17,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2019-12-07 14:46:17,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:17,886 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-12-07 14:46:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2019-12-07 14:46:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 14:46:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:46:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2019-12-07 14:46:17,888 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-12-07 14:46:17,888 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-12-07 14:46:17,888 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 14:46:17,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2019-12-07 14:46:17,889 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 14:46:17,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:17,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:17,889 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-12-07 14:46:17,890 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 14:46:17,890 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2019-12-07 14:46:17,890 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2019-12-07 14:46:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2019-12-07 14:46:17,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129651537] [2019-12-07 14:46:17,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,901 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,902 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-12-07 14:46:17,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813902592] [2019-12-07 14:46:17,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,905 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:17,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:17,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2019-12-07 14:46:17,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:17,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350700689] [2019-12-07 14:46:17,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:17,915 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:17,924 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:17,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:17,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:17,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:17,924 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:17,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:17,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:17,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2019-12-07 14:46:17,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:17,925 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:17,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:17,956 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:17,956 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/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 [2019-12-07 14:46:17,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:17,958 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:17,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:17,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,072 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:18,074 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:18,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:18,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:18,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:18,075 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:18,075 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,075 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:18,075 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:18,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2019-12-07 14:46:18,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:18,075 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:18,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,106 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:18,106 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,109 INFO L120 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 [2019-12-07 14:46:18,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:18,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:18,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:18,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:18,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:18,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:18,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:18,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:18,116 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:18,116 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,119 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:18,119 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:18,119 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:18,119 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-12-07 14:46:18,121 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,134 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,134 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,137 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,137 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:18,137 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 [2019-12-07 14:46:18,137 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-12-07 14:46:18,144 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2019-12-07 14:46:18,144 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 [2019-12-07 14:46:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 14:46:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 14:46:18,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2019-12-07 14:46:18,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,144 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:46:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,157 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,157 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,160 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,160 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:18,160 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 [2019-12-07 14:46:18,161 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-12-07 14:46:18,168 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2019-12-07 14:46:18,168 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 [2019-12-07 14:46:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 14:46:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 14:46:18,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2019-12-07 14:46:18,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,169 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:46:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,180 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,180 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,182 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,182 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:18,183 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 [2019-12-07 14:46:18,183 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-12-07 14:46:18,189 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2019-12-07 14:46:18,189 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 [2019-12-07 14:46:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 14:46:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-12-07 14:46:18,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2019-12-07 14:46:18,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2019-12-07 14:46:18,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2019-12-07 14:46:18,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2019-12-07 14:46:18,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2019-12-07 14:46:18,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:46:18,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 14:46:18,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2019-12-07 14:46:18,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:18,191 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 14:46:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2019-12-07 14:46:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-12-07 14:46:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 14:46:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2019-12-07 14:46:18,193 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-12-07 14:46:18,193 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-12-07 14:46:18,193 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 14:46:18,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2019-12-07 14:46:18,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:18,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:18,194 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2019-12-07 14:46:18,194 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:46:18,194 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2019-12-07 14:46:18,194 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2019-12-07 14:46:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2019-12-07 14:46:18,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542722360] [2019-12-07 14:46:18,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,205 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2019-12-07 14:46:18,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883387759] [2019-12-07 14:46:18,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,209 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2019-12-07 14:46:18,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949813050] [2019-12-07 14:46:18,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 14:46:18,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949813050] [2019-12-07 14:46:18,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243669344] [2019-12-07 14:46:18,233 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:46:18,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 14:46:18,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:46:18,253 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,253 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 14:46:18,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:46:18,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 14:46:18,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040763969] [2019-12-07 14:46:18,270 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:18,271 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:18,271 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:18,271 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:18,271 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:18,271 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:18,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:18,271 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2019-12-07 14:46:18,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:18,271 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:18,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,307 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:18,307 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:18,313 INFO L440 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:18,321 INFO L440 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,327 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:18,327 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,331 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:18,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,363 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:18,364 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:18,364 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:18,364 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:18,364 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:18,365 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:18,365 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,365 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:18,365 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:18,365 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2019-12-07 14:46:18,365 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:18,365 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:18,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,401 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:18,401 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,404 INFO L120 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 [2019-12-07 14:46:18,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:18,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:18,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:18,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:18,406 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:46:18,406 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:46:18,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,414 INFO L120 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 [2019-12-07 14:46:18,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:18,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:18,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:18,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:18,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:18,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:18,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:18,417 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,421 INFO L120 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 [2019-12-07 14:46:18,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:18,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:18,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:18,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:18,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:18,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:18,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:18,424 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:18,427 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:18,427 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,443 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:18,443 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:18,443 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:18,443 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 14:46:18,445 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:18,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,460 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,464 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,464 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:18,477 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 [2019-12-07 14:46:18,477 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-12-07 14:46:18,491 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2019-12-07 14:46:18,491 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 [2019-12-07 14:46:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:46:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 14:46:18,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2019-12-07 14:46:18,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2019-12-07 14:46:18,492 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2019-12-07 14:46:18,492 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2019-12-07 14:46:18,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2019-12-07 14:46:18,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:46:18,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 14:46:18,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2019-12-07 14:46:18,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:18,494 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2019-12-07 14:46:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2019-12-07 14:46:18,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2019-12-07 14:46:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 14:46:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2019-12-07 14:46:18,496 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2019-12-07 14:46:18,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:46:18,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:46:18,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:46:18,496 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2019-12-07 14:46:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:46:18,511 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-12-07 14:46:18,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:46:18,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2019-12-07 14:46:18,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2019-12-07 14:46:18,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:46:18,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 14:46:18,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2019-12-07 14:46:18,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:18,514 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2019-12-07 14:46:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2019-12-07 14:46:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2019-12-07 14:46:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 14:46:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2019-12-07 14:46:18,517 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2019-12-07 14:46:18,517 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2019-12-07 14:46:18,517 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 14:46:18,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2019-12-07 14:46:18,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:18,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:18,518 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2019-12-07 14:46:18,518 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:46:18,519 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2019-12-07 14:46:18,519 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2019-12-07 14:46:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2019-12-07 14:46:18,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612171505] [2019-12-07 14:46:18,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,532 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:18,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,533 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2019-12-07 14:46:18,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784524393] [2019-12-07 14:46:18,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,537 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,537 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2019-12-07 14:46:18,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,537 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302029748] [2019-12-07 14:46:18,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:46:18,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302029748] [2019-12-07 14:46:18,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900091225] [2019-12-07 14:46:18,571 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:46:18,593 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 14:46:18,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:46:18,594 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,594 INFO L287 TraceCheckSpWp]: Computing forward predicates... [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Exception during sending of exit command (exit): Broken pipe [2019-12-07 14:46:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 14:46:18,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:46:18,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 14:46:18,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089094902] [2019-12-07 14:46:18,626 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:18,626 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:18,626 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:18,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:18,626 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:18,627 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,627 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:18,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:18,627 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2019-12-07 14:46:18,627 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:18,627 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:18,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,667 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:18,667 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:18,673 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,677 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:18,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,716 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:18,718 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:18,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:18,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:18,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:18,718 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:18,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:18,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:18,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2019-12-07 14:46:18,718 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:18,719 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:18,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,755 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:18,755 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,758 INFO L120 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 [2019-12-07 14:46:18,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:18,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:18,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:18,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:18,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:18,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:18,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:18,762 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:18,765 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:18,765 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,768 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:18,768 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:18,768 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:18,768 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 14:46:18,769 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,783 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,783 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,786 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,786 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:18,796 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 [2019-12-07 14:46:18,796 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-12-07 14:46:18,808 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2019-12-07 14:46:18,808 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 [2019-12-07 14:46:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:46:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 14:46:18,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2019-12-07 14:46:18,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,808 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:46:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,820 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,821 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:18,823 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:18,824 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:18,834 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 14:46:18,834 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-12-07 14:46:18,851 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2019-12-07 14:46:18,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 14:46:18,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:46:18,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-12-07 14:46:18,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2019-12-07 14:46:18,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2019-12-07 14:46:18,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2019-12-07 14:46:18,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:18,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2019-12-07 14:46:18,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2019-12-07 14:46:18,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:46:18,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 14:46:18,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2019-12-07 14:46:18,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:18,855 INFO L688 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2019-12-07 14:46:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2019-12-07 14:46:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2019-12-07 14:46:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-12-07 14:46:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2019-12-07 14:46:18,859 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2019-12-07 14:46:18,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:46:18,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:46:18,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:46:18,859 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2019-12-07 14:46:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:46:18,876 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2019-12-07 14:46:18,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:46:18,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2019-12-07 14:46:18,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2019-12-07 14:46:18,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:46:18,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 14:46:18,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2019-12-07 14:46:18,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:46:18,879 INFO L688 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-12-07 14:46:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2019-12-07 14:46:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2019-12-07 14:46:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-12-07 14:46:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2019-12-07 14:46:18,883 INFO L711 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2019-12-07 14:46:18,883 INFO L591 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2019-12-07 14:46:18,883 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 14:46:18,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2019-12-07 14:46:18,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:46:18,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:46:18,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:46:18,884 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2019-12-07 14:46:18,884 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:46:18,884 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2019-12-07 14:46:18,884 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2019-12-07 14:46:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2019-12-07 14:46:18,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433940971] [2019-12-07 14:46:18,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,895 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,895 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2019-12-07 14:46:18,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54383472] [2019-12-07 14:46:18,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,898 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2019-12-07 14:46:18,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:46:18,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859354660] [2019-12-07 14:46:18,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:46:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:46:18,908 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:46:18,918 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:18,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:18,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:18,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:18,919 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:46:18,919 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,919 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:18,919 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:18,919 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2019-12-07 14:46:18,919 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:18,919 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:18,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,953 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:18,953 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,958 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:46:18,958 INFO L440 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/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:46:18,962 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:46:18,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:46:18,992 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:46:18,993 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:46:18,993 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:46:18,993 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:46:18,994 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:46:18,994 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:46:18,994 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:18,994 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:46:18,994 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:46:18,994 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2019-12-07 14:46:18,994 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:46:18,994 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:46:18,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:18,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:19,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:19,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:19,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:46:19,027 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:46:19,027 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:19,029 INFO L120 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 [2019-12-07 14:46:19,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:19,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:19,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:19,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:19,032 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:46:19,032 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:46:19,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:19,044 INFO L120 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 [2019-12-07 14:46:19,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:46:19,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:46:19,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:46:19,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:46:19,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:46:19,046 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:46:19,046 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:46:19,050 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:46:19,054 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:46:19,054 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f51dbe4a-052e-442a-b856-05d087816ac8/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:46:19,056 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:46:19,056 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:46:19,057 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:46:19,057 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 14:46:19,058 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:46:19,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:19,071 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:19,072 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:19,075 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:19,075 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:19,089 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 [2019-12-07 14:46:19,089 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-12-07 14:46:19,100 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2019-12-07 14:46:19,100 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 [2019-12-07 14:46:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:46:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 14:46:19,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2019-12-07 14:46:19,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:19,101 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:46:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:19,115 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:19,116 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:19,118 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:19,119 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:19,129 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 14:46:19,129 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-12-07 14:46:19,145 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2019-12-07 14:46:19,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 14:46:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:46:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-12-07 14:46:19,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2019-12-07 14:46:19,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:19,146 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:46:19,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:46:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:19,158 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:46:19,159 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:46:19,161 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:46:19,162 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:46:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:46:19,171 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 3 loop predicates [2019-12-07 14:46:19,172 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-12-07 14:46:19,183 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2019-12-07 14:46:19,183 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 [2019-12-07 14:46:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:46:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 14:46:19,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2019-12-07 14:46:19,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:19,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2019-12-07 14:46:19,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:19,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2019-12-07 14:46:19,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:46:19,184 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2019-12-07 14:46:19,185 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:46:19,185 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2019-12-07 14:46:19,185 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 14:46:19,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 14:46:19,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 14:46:19,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:46:19,185 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:46:19,185 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:46:19,185 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:46:19,186 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 14:46:19,186 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:46:19,186 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:46:19,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 14:46:19,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 02:46:19 BoogieIcfgContainer [2019-12-07 14:46:19,190 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 14:46:19,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:46:19,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:46:19,190 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:46:19,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:46:16" (3/4) ... [2019-12-07 14:46:19,193 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:46:19,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:46:19,194 INFO L168 Benchmark]: Toolchain (without parser) took 3336.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 939.4 MB in the beginning and 995.0 MB in the end (delta: -55.6 MB). Peak memory consumption was 105.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:46:19,194 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:46:19,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:46:19,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:46:19,195 INFO L168 Benchmark]: Boogie Preprocessor took 11.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:46:19,195 INFO L168 Benchmark]: RCFGBuilder took 127.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:46:19,195 INFO L168 Benchmark]: BuchiAutomizer took 3000.88 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 995.0 MB in the end (delta: 83.0 MB). Peak memory consumption was 142.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:46:19,196 INFO L168 Benchmark]: Witness Printer took 2.50 ms. Allocated memory is still 1.2 GB. Free memory is still 995.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:46:19,197 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -158.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 127.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3000.88 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 995.0 MB in the end (delta: 83.0 MB). Peak memory consumption was 142.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.50 ms. Allocated memory is still 1.2 GB. Free memory is still 995.0 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 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...