./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 4113f10404cd50c48db8fb998633f502f8a0b01a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:04:44,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:04:44,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:04:44,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:04:44,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:04:44,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:04:44,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:04:44,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:04:44,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:04:44,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:04:44,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:04:44,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:04:44,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:04:44,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:04:44,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:04:44,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:04:44,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:04:44,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:04:44,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:04:44,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:04:44,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:04:44,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:04:44,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:04:44,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:04:44,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:04:44,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:04:44,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:04:44,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:04:44,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:04:44,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:04:44,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:04:44,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:04:44,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:04:44,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:04:44,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:04:44,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:04:44,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:04:44,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:04:44,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:04:44,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:04:44,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:04:44,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 11:04:44,089 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:04:44,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:04:44,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:04:44,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:04:44,090 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:04:44,090 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 11:04:44,090 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 11:04:44,090 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 11:04:44,090 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 11:04:44,090 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 11:04:44,091 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 11:04:44,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:04:44,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:04:44,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:04:44,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:04:44,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 11:04:44,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 11:04:44,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 11:04:44,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:04:44,092 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 11:04:44,092 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:04:44,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 11:04:44,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:04:44,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:04:44,092 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 11:04:44,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:04:44,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:04:44,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:04:44,093 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 11:04:44,093 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 11:04:44,093 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 -> 4113f10404cd50c48db8fb998633f502f8a0b01a [2019-12-07 11:04:44,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:04:44,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:04:44,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:04:44,201 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:04:44,201 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:04:44,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2019-12-07 11:04:44,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/data/a6e98e11b/01f7f67dc304484ba6036f318a419592/FLAGea7f504a4 [2019-12-07 11:04:44,656 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:04:44,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2019-12-07 11:04:44,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/data/a6e98e11b/01f7f67dc304484ba6036f318a419592/FLAGea7f504a4 [2019-12-07 11:04:44,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/data/a6e98e11b/01f7f67dc304484ba6036f318a419592 [2019-12-07 11:04:44,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:04:44,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:04:44,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:04:44,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:04:44,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:04:44,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f146fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44, skipping insertion in model container [2019-12-07 11:04:44,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:04:44,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:04:44,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:04:44,790 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:04:44,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:04:44,845 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:04:44,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44 WrapperNode [2019-12-07 11:04:44,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:04:44,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:04:44,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:04:44,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:04:44,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:04:44,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:04:44,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:04:44,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:04:44,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... [2019-12-07 11:04:44,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:04:44,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:04:44,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:04:44,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:04:44,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:04:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:04:45,018 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:04:45,018 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 11:04:45,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:04:45 BoogieIcfgContainer [2019-12-07 11:04:45,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:04:45,020 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 11:04:45,020 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 11:04:45,022 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 11:04:45,022 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:04:45,022 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 11:04:44" (1/3) ... [2019-12-07 11:04:45,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@671d0605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:04:45, skipping insertion in model container [2019-12-07 11:04:45,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:04:45,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:04:44" (2/3) ... [2019-12-07 11:04:45,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@671d0605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:04:45, skipping insertion in model container [2019-12-07 11:04:45,024 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:04:45,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:04:45" (3/3) ... [2019-12-07 11:04:45,025 INFO L371 chiAutomizerObserver]: Analyzing ICFG DivMinus2.c [2019-12-07 11:04:45,054 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 11:04:45,054 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 11:04:45,054 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 11:04:45,054 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:04:45,054 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:04:45,054 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 11:04:45,054 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:04:45,054 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 11:04:45,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 11:04:45,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:04:45,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:04:45,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:04:45,080 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 11:04:45,080 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 11:04:45,080 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 11:04:45,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 11:04:45,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:04:45,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:04:45,081 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:04:45,081 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 11:04:45,081 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 11:04:45,086 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 7#L14-2true [2019-12-07 11:04:45,086 INFO L796 eck$LassoCheckResult]: Loop: 7#L14-2true assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 3#L17-2true assume !(0 != main_~ytmp~0); 11#L16-2true main_~res~0 := 1 + main_~res~0; 7#L14-2true [2019-12-07 11:04:45,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,090 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 11:04:45,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927110273] [2019-12-07 11:04:45,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,160 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:45,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,161 INFO L82 PathProgramCache]: Analyzing trace with hash 39957, now seen corresponding path program 1 times [2019-12-07 11:04:45,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375106871] [2019-12-07 11:04:45,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:45,196 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 11:04:45,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375106871] [2019-12-07 11:04:45,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:04:45,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:04:45,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637472979] [2019-12-07 11:04:45,201 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 11:04:45,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:04:45,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:04:45,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:04:45,212 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-12-07 11:04:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:04:45,230 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-12-07 11:04:45,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:04:45,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-12-07 11:04:45,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 11:04:45,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 9 transitions. [2019-12-07 11:04:45,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 11:04:45,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 11:04:45,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2019-12-07 11:04:45,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:04:45,236 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 11:04:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2019-12-07 11:04:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 11:04:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 11:04:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 11:04:45,254 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 11:04:45,254 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 11:04:45,254 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 11:04:45,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-12-07 11:04:45,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 11:04:45,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:04:45,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:04:45,255 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 11:04:45,255 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-12-07 11:04:45,255 INFO L794 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 32#L14-2 [2019-12-07 11:04:45,255 INFO L796 eck$LassoCheckResult]: Loop: 32#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 29#L17-2 assume !!(0 != main_~ytmp~0); 30#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 33#L17-2 assume !(0 != main_~ytmp~0); 34#L16-2 main_~res~0 := 1 + main_~res~0; 32#L14-2 [2019-12-07 11:04:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,256 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-12-07 11:04:45,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710521192] [2019-12-07 11:04:45,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,262 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,263 INFO L82 PathProgramCache]: Analyzing trace with hash 38452088, now seen corresponding path program 1 times [2019-12-07 11:04:45,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59986787] [2019-12-07 11:04:45,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,277 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,278 INFO L82 PathProgramCache]: Analyzing trace with hash 925955769, now seen corresponding path program 1 times [2019-12-07 11:04:45,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325808766] [2019-12-07 11:04:45,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,294 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:45,347 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:45,348 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:45,348 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:45,348 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:45,348 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:04:45,348 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:45,348 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:45,348 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:45,348 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2019-12-07 11:04:45,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:45,349 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:45,361 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 11:04:45,367 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 11:04:45,370 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 11:04:45,372 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 11:04:45,435 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:45,436 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:45,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:45,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:45,448 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:45,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:45,455 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:45,455 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:45,459 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:04:45,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:45,481 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:45,481 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=4}, {ULTIMATE.start_main_~res~0=-4}, {ULTIMATE.start_main_~res~0=1}] Lambdas: [2, 1, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:45,486 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:04:45,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:45,660 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:04:45,661 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:45,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:45,662 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:45,662 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:45,662 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:04:45,662 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:45,662 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:45,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:45,662 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2019-12-07 11:04:45,662 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:45,662 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:45,663 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 11:04:45,666 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 11:04:45,668 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 11:04:45,676 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 11:04:45,719 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:45,723 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,726 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 11:04:45,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:45,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:45,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:45,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:45,732 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:04:45,733 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:04:45,737 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,741 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 11:04:45,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:45,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:45,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:45,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:45,745 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:04:45,745 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:04:45,748 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,753 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 11:04:45,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:45,754 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:04:45,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:45,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:45,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:45,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:04:45,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:04:45,760 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:04:45,764 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:04:45,764 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,768 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:04:45,768 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:04:45,768 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:04:45,769 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 11:04:45,772 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:04:45,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:45,795 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:04:45,796 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:45,804 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:04:45,805 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:04:45,832 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 11:04:45,832 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 11:04:45,860 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 24 states and 33 transitions. Complement of second has 7 states. [2019-12-07 11:04:45,860 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 11:04:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 11:04:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 11:04:45,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2019-12-07 11:04:45,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:45,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2019-12-07 11:04:45,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:45,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2019-12-07 11:04:45,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:45,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2019-12-07 11:04:45,866 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 11:04:45,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 18 states and 25 transitions. [2019-12-07 11:04:45,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 11:04:45,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 11:04:45,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2019-12-07 11:04:45,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:04:45,868 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-12-07 11:04:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2019-12-07 11:04:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-12-07 11:04:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 11:04:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2019-12-07 11:04:45,870 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2019-12-07 11:04:45,870 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2019-12-07 11:04:45,870 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 11:04:45,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2019-12-07 11:04:45,871 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 11:04:45,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:04:45,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:04:45,871 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-12-07 11:04:45,872 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:04:45,872 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 108#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 105#L17-2 assume !!(0 != main_~ytmp~0); 106#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 110#L17-2 assume !!(0 != main_~ytmp~0); 104#L17 [2019-12-07 11:04:45,872 INFO L796 eck$LassoCheckResult]: Loop: 104#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 103#L17-2 assume !!(0 != main_~ytmp~0); 104#L17 [2019-12-07 11:04:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,872 INFO L82 PathProgramCache]: Analyzing trace with hash 29869542, now seen corresponding path program 1 times [2019-12-07 11:04:45,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311193843] [2019-12-07 11:04:45,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,882 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 1 times [2019-12-07 11:04:45,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997806808] [2019-12-07 11:04:45,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,888 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1360140509, now seen corresponding path program 2 times [2019-12-07 11:04:45,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:45,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844249538] [2019-12-07 11:04:45,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:45,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:45,912 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:45,913 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:45,913 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:45,913 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:45,913 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:04:45,913 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:45,913 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:45,913 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:45,913 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2019-12-07 11:04:45,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:45,913 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:45,914 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 11:04:45,916 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 11:04:45,918 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 11:04:45,924 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 11:04:45,967 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:45,967 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:45,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:45,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:45,975 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:45,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:45,983 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:45,983 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:45,987 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:45,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:04:45,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:46,034 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:04:46,036 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:46,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:46,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:46,036 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:46,036 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:04:46,036 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:46,036 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:46,036 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:46,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2019-12-07 11:04:46,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:46,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:46,038 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 11:04:46,040 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 11:04:46,046 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 11:04:46,048 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 11:04:46,091 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:46,091 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,094 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 11:04:46,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:46,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:46,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:46,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:46,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:04:46,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:04:46,100 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,104 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 11:04:46,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:46,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:04:46,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:46,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:46,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:46,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:04:46,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:04:46,109 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:04:46,111 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:04:46,112 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,116 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:04:46,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:04:46,116 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:04:46,116 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2019-12-07 11:04:46,117 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:04:46,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,133 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,133 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,137 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,137 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,146 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 11:04:46,147 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 11:04:46,147 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-12-07 11:04:46,159 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 32 states and 45 transitions. Complement of second has 5 states. [2019-12-07 11:04:46,160 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 11:04:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:04:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 11:04:46,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 11:04:46,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 11:04:46,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 11:04:46,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2019-12-07 11:04:46,162 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 11:04:46,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 40 transitions. [2019-12-07 11:04:46,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-12-07 11:04:46,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 11:04:46,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 40 transitions. [2019-12-07 11:04:46,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:04:46,163 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 11:04:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 40 transitions. [2019-12-07 11:04:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-12-07 11:04:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 11:04:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2019-12-07 11:04:46,166 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-12-07 11:04:46,166 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-12-07 11:04:46,166 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 11:04:46,166 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2019-12-07 11:04:46,167 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 11:04:46,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:04:46,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:04:46,167 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-12-07 11:04:46,167 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:04:46,167 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 200#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 204#L17-2 assume !!(0 != main_~ytmp~0); 215#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 214#L17-2 assume !!(0 != main_~ytmp~0); 198#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := 1 + main_~ytmp~0;main_~x~0 := 1 + main_~x~0; 210#L17-2 [2019-12-07 11:04:46,167 INFO L796 eck$LassoCheckResult]: Loop: 210#L17-2 assume !!(0 != main_~ytmp~0); 211#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 210#L17-2 [2019-12-07 11:04:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,168 INFO L82 PathProgramCache]: Analyzing trace with hash 925955826, now seen corresponding path program 1 times [2019-12-07 11:04:46,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:46,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450182336] [2019-12-07 11:04:46,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:04:46,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450182336] [2019-12-07 11:04:46,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:04:46,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:04:46,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321273894] [2019-12-07 11:04:46,198 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:04:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1572, now seen corresponding path program 2 times [2019-12-07 11:04:46,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:46,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459708101] [2019-12-07 11:04:46,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:46,203 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:46,218 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:46,218 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:46,218 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:46,218 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:46,219 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:04:46,219 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:46,219 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:46,219 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:46,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2019-12-07 11:04:46,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:46,219 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:46,220 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 11:04:46,224 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 11:04:46,226 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 11:04:46,228 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 11:04:46,260 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:46,260 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:46,262 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:04:46,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:46,273 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:04:46,274 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:46,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:46,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:46,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:46,274 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:04:46,274 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:46,275 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:46,275 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:46,275 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2019-12-07 11:04:46,275 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:46,275 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:46,276 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 11:04:46,280 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 11:04:46,282 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 11:04:46,284 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 11:04:46,314 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:46,314 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,317 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 11:04:46,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:46,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:04:46,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:46,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:46,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:46,319 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:04:46,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:04:46,320 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:04:46,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:04:46,323 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,325 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:04:46,326 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:04:46,326 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:04:46,326 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2019-12-07 11:04:46,327 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:04:46,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,342 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,342 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,345 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,346 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,346 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 11:04:46,346 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 11:04:46,346 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 14 Second operand 3 states. [2019-12-07 11:04:46,358 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 14. Second operand 3 states. Result 32 states and 47 transitions. Complement of second has 5 states. [2019-12-07 11:04:46,358 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 11:04:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:04:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-12-07 11:04:46,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 11:04:46,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 11:04:46,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 11:04:46,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 47 transitions. [2019-12-07 11:04:46,361 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 11:04:46,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 30 states and 44 transitions. [2019-12-07 11:04:46,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 11:04:46,362 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 11:04:46,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2019-12-07 11:04:46,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:04:46,363 INFO L688 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-12-07 11:04:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2019-12-07 11:04:46,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-12-07 11:04:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 11:04:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2019-12-07 11:04:46,365 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-12-07 11:04:46,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:04:46,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:04:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:04:46,366 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2019-12-07 11:04:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:04:46,382 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2019-12-07 11:04:46,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:04:46,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2019-12-07 11:04:46,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:04:46,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 18 transitions. [2019-12-07 11:04:46,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 11:04:46,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 11:04:46,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2019-12-07 11:04:46,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:04:46,383 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-12-07 11:04:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2019-12-07 11:04:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-12-07 11:04:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 11:04:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-12-07 11:04:46,384 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-12-07 11:04:46,385 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-12-07 11:04:46,385 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 11:04:46,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2019-12-07 11:04:46,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:04:46,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:04:46,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:04:46,385 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2019-12-07 11:04:46,385 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:04:46,386 INFO L794 eck$LassoCheckResult]: Stem: 344#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 345#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 342#L17-2 assume !!(0 != main_~ytmp~0); 343#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 346#L17-2 assume !(0 != main_~ytmp~0); 349#L16-2 main_~res~0 := 1 + main_~res~0; 347#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 348#L17-2 assume !!(0 != main_~ytmp~0); 351#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 350#L17-2 assume !!(0 != main_~ytmp~0); 341#L17 [2019-12-07 11:04:46,386 INFO L796 eck$LassoCheckResult]: Loop: 341#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 340#L17-2 assume !!(0 != main_~ytmp~0); 341#L17 [2019-12-07 11:04:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1275475969, now seen corresponding path program 2 times [2019-12-07 11:04:46,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:46,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032023115] [2019-12-07 11:04:46,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:04:46,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032023115] [2019-12-07 11:04:46,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136253175] [2019-12-07 11:04:46,433 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:04:46,451 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:04:46,451 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:04:46,451 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,452 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:04:46,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:04:46,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-12-07 11:04:46,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531089534] [2019-12-07 11:04:46,481 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:04:46,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 3 times [2019-12-07 11:04:46,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:04:46,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999232413] [2019-12-07 11:04:46,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:04:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:04:46,485 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:04:46,495 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:46,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:46,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:46,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:46,495 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:04:46,495 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:46,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:46,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:46,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2019-12-07 11:04:46,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:46,496 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:46,497 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 11:04:46,498 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 11:04:46,500 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 11:04:46,501 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 11:04:46,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:46,539 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:46,542 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:04:46,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:46,559 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:46,559 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: [{ULTIMATE.start_main_~x~0=4}, {ULTIMATE.start_main_~x~0=-7}, {ULTIMATE.start_main_~x~0=2}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:46,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:46,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:46,566 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:46,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:46,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:04:46,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:04:46,577 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:04:46,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:04:46,624 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:04:46,626 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:04:46,626 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:04:46,626 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:04:46,627 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:04:46,627 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:04:46,627 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:04:46,627 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:04:46,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:04:46,627 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2019-12-07 11:04:46,627 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:04:46,627 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:04:46,628 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 11:04:46,630 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 11:04:46,632 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 11:04:46,633 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 11:04:46,665 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:04:46,665 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,668 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 11:04:46,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:46,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:04:46,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:46,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:46,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:46,670 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:04:46,670 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:04:46,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,676 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 11:04:46,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:46,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:46,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:46,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:46,678 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:04:46,678 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:04:46,680 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,685 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 11:04:46,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:46,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:46,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:46,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:46,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:04:46,687 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:04:46,690 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,696 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 11:04:46,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:04:46,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:04:46,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:04:46,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:04:46,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:04:46,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:04:46,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:04:46,700 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:04:46,702 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:04:46,702 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_dd2bb7e2-8989-4b7d-95f5-ed4e0b035d50/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 11:04:46,707 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:04:46,707 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:04:46,707 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:04:46,707 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2019-12-07 11:04:46,709 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:04:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,726 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,726 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,729 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,729 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,736 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 11:04:46,736 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 11:04:46,736 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 11:04:46,743 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 20 states and 24 transitions. Complement of second has 5 states. [2019-12-07 11:04:46,744 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 11:04:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:04:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 11:04:46,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2019-12-07 11:04:46,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,744 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:04:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,755 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,756 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,758 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,759 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,766 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 11:04:46,766 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 11:04:46,766 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 11:04:46,776 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 5 states. [2019-12-07 11:04:46,776 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 11:04:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:04:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 11:04:46,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 2 letters. [2019-12-07 11:04:46,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,777 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:04:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:04:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,787 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,787 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:04:46,790 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:04:46,790 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:04:46,796 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 11:04:46,796 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 11:04:46,796 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 11:04:46,803 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 6 states. [2019-12-07 11:04:46,803 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 11:04:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:04:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-12-07 11:04:46,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2019-12-07 11:04:46,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2019-12-07 11:04:46,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 4 letters. [2019-12-07 11:04:46,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:04:46,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2019-12-07 11:04:46,805 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:04:46,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2019-12-07 11:04:46,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 11:04:46,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 11:04:46,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 11:04:46,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:04:46,805 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:04:46,805 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:04:46,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:04:46,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 11:04:46,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-12-07 11:04:46,806 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2019-12-07 11:04:46,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:04:46,806 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 11:04:46,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:04:46,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 11:04:46,806 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:04:46,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 11:04:46,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 11:04:46,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 11:04:46,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 11:04:46,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:04:46,806 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:04:46,807 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:04:46,807 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:04:46,807 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 11:04:46,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:04:46,807 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:04:46,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 11:04:46,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 11:04:46 BoogieIcfgContainer [2019-12-07 11:04:46,811 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 11:04:46,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:04:46,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:04:46,811 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:04:46,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:04:45" (3/4) ... [2019-12-07 11:04:46,813 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:04:46,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:04:46,815 INFO L168 Benchmark]: Toolchain (without parser) took 2143.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 940.9 MB in the beginning and 967.1 MB in the end (delta: -26.2 MB). Peak memory consumption was 68.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:04:46,815 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 956.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:04:46,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -151.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:04:46,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.95 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 11:04:46,816 INFO L168 Benchmark]: Boogie Preprocessor took 12.69 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 11:04:46,816 INFO L168 Benchmark]: RCFGBuilder took 133.33 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:04:46,817 INFO L168 Benchmark]: BuchiAutomizer took 1791.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 967.1 MB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:04:46,817 INFO L168 Benchmark]: Witness Printer took 2.54 ms. Allocated memory is still 1.1 GB. Free memory is still 967.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:04:46,819 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 956.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -151.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.95 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 12.69 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 133.33 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1791.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 967.1 MB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.54 ms. Allocated memory is still 1.1 GB. Free memory is still 967.1 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 24 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 49 SDtfs, 44 SDslu, 16 SDs, 0 SdLazy, 60 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax164 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq172 hnf94 smp84 dnf100 smp100 tf111 neg97 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...