./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 f560e32afd5a40adf4a98abbf810cb377947c4f4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 03:01:19,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:01:19,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:01:19,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:01:19,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:01:19,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:01:19,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:01:19,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:01:19,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:01:19,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:01:19,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:01:19,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:01:19,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:01:19,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:01:19,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:01:19,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:01:19,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:01:19,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:01:19,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:01:19,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:01:19,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:01:19,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:01:19,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:01:19,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:01:19,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:01:19,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:01:19,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:01:19,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:01:19,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:01:19,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:01:19,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:01:19,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:01:19,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:01:19,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:01:19,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:01:19,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:01:19,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:01:19,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:01:19,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:01:19,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:01:19,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:01:19,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 03:01:19,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:01:19,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:01:19,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:01:19,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:01:19,768 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:01:19,768 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 03:01:19,768 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 03:01:19,768 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 03:01:19,768 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 03:01:19,768 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 03:01:19,769 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 03:01:19,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:01:19,769 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 03:01:19,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:01:19,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:01:19,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 03:01:19,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 03:01:19,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 03:01:19,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:01:19,770 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 03:01:19,770 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:01:19,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 03:01:19,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:01:19,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:01:19,771 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 03:01:19,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:01:19,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:01:19,772 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 03:01:19,772 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 03:01:19,772 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_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2019-11-20 03:01:19,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:01:19,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:01:19,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:01:19,972 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:01:19,973 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:01:19,974 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-11-20 03:01:20,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/data/5a6778ab4/22127ddd8e5440f797628ed025acd99e/FLAG2b2facc52 [2019-11-20 03:01:20,406 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:01:20,407 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-11-20 03:01:20,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/data/5a6778ab4/22127ddd8e5440f797628ed025acd99e/FLAG2b2facc52 [2019-11-20 03:01:20,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/data/5a6778ab4/22127ddd8e5440f797628ed025acd99e [2019-11-20 03:01:20,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:01:20,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:01:20,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:01:20,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:01:20,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:01:20,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:20" (1/1) ... [2019-11-20 03:01:20,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3e7417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:20, skipping insertion in model container [2019-11-20 03:01:20,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:20" (1/1) ... [2019-11-20 03:01:20,874 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:01:20,891 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:01:21,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:01:21,082 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:01:21,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:01:21,192 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:01:21,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21 WrapperNode [2019-11-20 03:01:21,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:01:21,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:01:21,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:01:21,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:01:21,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:01:21,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:01:21,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:01:21,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:01:21,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... [2019-11-20 03:01:21,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:01:21,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:01:21,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:01:21,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:01:21,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:01:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:01:21,414 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:01:21,415 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 03:01:21,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:21 BoogieIcfgContainer [2019-11-20 03:01:21,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:01:21,417 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 03:01:21,417 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 03:01:21,420 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 03:01:21,420 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:01:21,421 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 03:01:20" (1/3) ... [2019-11-20 03:01:21,421 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fbdb9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:01:21, skipping insertion in model container [2019-11-20 03:01:21,422 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:01:21,422 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:21" (2/3) ... [2019-11-20 03:01:21,422 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fbdb9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:01:21, skipping insertion in model container [2019-11-20 03:01:21,422 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:01:21,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:21" (3/3) ... [2019-11-20 03:01:21,424 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-11-20 03:01:21,468 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 03:01:21,469 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 03:01:21,469 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 03:01:21,469 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:01:21,469 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:01:21,470 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 03:01:21,470 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:01:21,470 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 03:01:21,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 03:01:21,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:01:21,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:01:21,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:01:21,506 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 03:01:21,506 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:01:21,506 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 03:01:21,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 03:01:21,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:01:21,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:01:21,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:01:21,508 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 03:01:21,508 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:01:21,515 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 8#L20-2true [2019-11-20 03:01:21,516 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~i~0 > 0); 10#L20true assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 8#L20-2true [2019-11-20 03:01:21,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:21,522 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-20 03:01:21,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:21,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651367135] [2019-11-20 03:01:21,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:21,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:21,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:21,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-20 03:01:21,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:21,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951715556] [2019-11-20 03:01:21,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:21,630 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:21,631 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-20 03:01:21,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:21,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903546185] [2019-11-20 03:01:21,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:01:21,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903546185] [2019-11-20 03:01:21,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:01:21,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 03:01:21,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608387660] [2019-11-20 03:01:21,758 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:21,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:21,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:21,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:21,760 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:01:21,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:21,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:21,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:21,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-11-20 03:01:21,761 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:21,761 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:21,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:21,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:21,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:21,926 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:21,927 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:21,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:21,942 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:21,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:01:21,951 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_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:21,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:21,962 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:21,966 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:01:21,967 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_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:21,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:21,978 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:21,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:01:21,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:01:22,001 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:01:22,003 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:22,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:22,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:22,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:22,004 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:01:22,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:22,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:22,005 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-11-20 03:01:22,005 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:22,005 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:22,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,098 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:22,103 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:22,122 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 [2019-11-20 03:01:22,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:22,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:22,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:22,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:22,138 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:01:22,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:01:22,147 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:22,158 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 [2019-11-20 03:01:22,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:22,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:22,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:22,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:22,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:01:22,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:01:22,175 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:22,190 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 [2019-11-20 03:01:22,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:22,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:01:22,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:22,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:22,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:22,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:01:22,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:01:22,205 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 03:01:22,205 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:22,214 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:01:22,214 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:01:22,214 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:01:22,215 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 03:01:22,219 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 03:01:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:22,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:01:22,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:22,283 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:01:22,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:01:22,316 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 [2019-11-20 03:01:22,317 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-20 03:01:22,362 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 8 states. [2019-11-20 03:01:22,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 03:01:22,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:01:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2019-11-20 03:01:22,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 03:01:22,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:22,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 03:01:22,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:22,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-20 03:01:22,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:22,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-20 03:01:22,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:01:22,375 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-20 03:01:22,376 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 03:01:22,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-20 03:01:22,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-20 03:01:22,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:01:22,377 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-20 03:01:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-20 03:01:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 03:01:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 03:01:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-20 03:01:22,402 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-20 03:01:22,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:01:22,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 03:01:22,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:01:22,405 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. Second operand 3 states. [2019-11-20 03:01:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:01:22,422 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-11-20 03:01:22,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 03:01:22,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-11-20 03:01:22,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:01:22,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2019-11-20 03:01:22,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 03:01:22,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-20 03:01:22,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-11-20 03:01:22,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:01:22,424 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 03:01:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-11-20 03:01:22,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-20 03:01:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 03:01:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-20 03:01:22,426 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 03:01:22,426 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 03:01:22,426 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 03:01:22,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-20 03:01:22,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:01:22,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:01:22,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:01:22,427 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 03:01:22,427 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:01:22,428 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 93#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 94#L20-2 assume !!(main_~i~0 > 0); 97#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 95#L20-2 [2019-11-20 03:01:22,428 INFO L796 eck$LassoCheckResult]: Loop: 95#L20-2 assume !!(main_~i~0 > 0); 96#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 95#L20-2 [2019-11-20 03:01:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,428 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-20 03:01:22,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:22,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680903220] [2019-11-20 03:01:22,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-20 03:01:22,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:22,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477987278] [2019-11-20 03:01:22,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,461 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,462 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-11-20 03:01:22,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:22,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701757987] [2019-11-20 03:01:22,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,499 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:22,512 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:22,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:22,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:22,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:22,513 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:01:22,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,513 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:22,513 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:22,513 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-11-20 03:01:22,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:22,513 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:22,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,581 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:22,581 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:22,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:22,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:01:22,598 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:01:22,598 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_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:22,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:22,612 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,617 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:01:22,617 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_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:22,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:22,627 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:22,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:01:22,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:01:22,657 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:01:22,659 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:22,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:22,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:22,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:22,660 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:01:22,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:22,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:22,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-11-20 03:01:22,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:22,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:22,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,749 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:22,749 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:22,762 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 [2019-11-20 03:01:22,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:22,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:22,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:22,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:22,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:01:22,769 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,773 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:22,787 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 [2019-11-20 03:01:22,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:22,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:22,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:22,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:22,791 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:01:22,792 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,798 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:22,806 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 [2019-11-20 03:01:22,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:22,808 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:01:22,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:22,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:22,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:22,811 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:01:22,811 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,817 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:01:22,820 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 03:01:22,820 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:22,825 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:01:22,825 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:01:22,826 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:01:22,826 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 03:01:22,828 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:22,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:01:22,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:22,866 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:01:22,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:01:22,878 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 [2019-11-20 03:01:22,879 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-11-20 03:01:22,894 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-11-20 03:01:22,895 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 [2019-11-20 03:01:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:01:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 03:01:22,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 03:01:22,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:22,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 03:01:22,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:22,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-20 03:01:22,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:22,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-11-20 03:01:22,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:01:22,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2019-11-20 03:01:22,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 03:01:22,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 03:01:22,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-20 03:01:22,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:01:22,899 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-20 03:01:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-20 03:01:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-20 03:01:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 03:01:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-20 03:01:22,900 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-20 03:01:22,901 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-20 03:01:22,901 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 03:01:22,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-20 03:01:22,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:01:22,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:01:22,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:01:22,902 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-11-20 03:01:22,902 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:01:22,902 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 148#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 149#L20-2 assume !!(main_~i~0 > 0); 156#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 155#L20-2 assume !!(main_~i~0 > 0); 154#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 150#L20-2 [2019-11-20 03:01:22,903 INFO L796 eck$LassoCheckResult]: Loop: 150#L20-2 assume !!(main_~i~0 > 0); 151#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 150#L20-2 [2019-11-20 03:01:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2019-11-20 03:01:22,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:22,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913407275] [2019-11-20 03:01:22,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,928 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-11-20 03:01:22,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:22,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574134421] [2019-11-20 03:01:22,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,935 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:22,935 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2019-11-20 03:01:22,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:22,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295696018] [2019-11-20 03:01:22,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:22,956 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:22,970 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:22,970 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:22,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:22,971 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:22,971 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:01:22,971 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:22,971 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:22,971 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:22,971 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-11-20 03:01:22,971 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:22,971 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:22,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:22,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,028 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:23,028 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:23,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:23,041 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:23,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:01:23,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:01:23,058 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:01:23,059 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:23,060 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:23,060 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:23,060 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:23,060 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:01:23,060 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,060 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:23,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:23,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-11-20 03:01:23,061 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:23,061 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:23,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,123 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:23,123 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:23,137 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 [2019-11-20 03:01:23,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:23,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:01:23,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:23,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:23,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:23,140 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:01:23,140 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:01:23,143 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:01:23,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 03:01:23,146 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:23,156 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:01:23,157 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:01:23,157 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:01:23,157 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 03:01:23,159 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 03:01:23,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:23,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:01:23,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:23,195 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:01:23,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:01:23,214 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 [2019-11-20 03:01:23,214 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 03:01:23,227 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-20 03:01:23,228 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 [2019-11-20 03:01:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:01:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 03:01:23,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 03:01:23,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:23,229 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:01:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:23,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:01:23,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:23,259 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:01:23,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:01:23,271 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 [2019-11-20 03:01:23,271 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 03:01:23,284 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-20 03:01:23,285 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 [2019-11-20 03:01:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:01:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 03:01:23,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 03:01:23,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:23,285 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:01:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:23,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:01:23,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:23,314 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:01:23,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:01:23,329 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 [2019-11-20 03:01:23,329 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 03:01:23,340 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 4 states. [2019-11-20 03:01:23,341 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 [2019-11-20 03:01:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:01:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-20 03:01:23,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 03:01:23,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:23,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 03:01:23,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:23,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 03:01:23,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:23,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-11-20 03:01:23,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 03:01:23,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 16 transitions. [2019-11-20 03:01:23,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 03:01:23,345 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 03:01:23,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-11-20 03:01:23,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:01:23,345 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-20 03:01:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-11-20 03:01:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2019-11-20 03:01:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 03:01:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-20 03:01:23,347 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-20 03:01:23,347 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-20 03:01:23,347 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 03:01:23,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-20 03:01:23,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 03:01:23,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:01:23,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:01:23,348 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 03:01:23,348 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:01:23,348 INFO L794 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 300#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 301#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-11-20 03:01:23,349 INFO L796 eck$LassoCheckResult]: Loop: 302#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 305#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-11-20 03:01:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:23,349 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-11-20 03:01:23,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:23,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244738858] [2019-11-20 03:01:23,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:23,357 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:23,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-11-20 03:01:23,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:23,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623579944] [2019-11-20 03:01:23,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:23,363 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:23,363 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 3 times [2019-11-20 03:01:23,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:01:23,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253737449] [2019-11-20 03:01:23,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:01:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:01:23,372 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:01:23,430 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:23,430 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:23,430 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:23,430 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:23,430 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:01:23,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:23,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:23,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-11-20 03:01:23,431 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:23,431 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:23,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,541 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:23,541 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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 [2019-11-20 03:01:23,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:23,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:01:23,558 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:01:23,558 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:01:23,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:01:23,568 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:23,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:01:23,581 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,782 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:01:23,784 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:01:23,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:01:23,784 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:01:23,784 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:01:23,784 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:01:23,784 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:01:23,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:01:23,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-11-20 03:01:23,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:01:23,785 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:01:23,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:01:23,871 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:01:23,871 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:23,883 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 [2019-11-20 03:01:23,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:23,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:01:23,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:23,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:23,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:23,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:01:23,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,887 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:23,894 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 [2019-11-20 03:01:23,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:23,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:01:23,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:23,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:23,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:23,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:01:23,897 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,899 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:23,906 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 [2019-11-20 03:01:23,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:23,908 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:01:23,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:23,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:23,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:23,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:01:23,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,911 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:23,921 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 [2019-11-20 03:01:23,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:23,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:23,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:23,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:23,925 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:01:23,926 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:23,935 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 [2019-11-20 03:01:23,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:01:23,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:01:23,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:01:23,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:01:23,940 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:01:23,940 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,948 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:01:23,960 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-11-20 03:01:23,960 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66b087c2-59c6-49a4-b5d5-0f72f0e3e07d/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) [2019-11-20 03:01:23,964 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:01:23,968 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-20 03:01:23,968 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:01:23,968 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~m~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~m~0 Supporting invariants [1*ULTIMATE.start_main_~m~0 - 1 >= 0] [2019-11-20 03:01:23,972 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-20 03:01:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:01:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:24,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:01:24,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:01:24,029 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 03:01:24,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:01:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:01:24,055 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-20 03:01:24,056 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-20 03:01:24,092 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2019-11-20 03:01:24,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:01:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 03:01:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-20 03:01:24,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 03:01:24,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:24,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 03:01:24,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:24,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-20 03:01:24,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:01:24,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2019-11-20 03:01:24,094 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:01:24,094 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-11-20 03:01:24,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 03:01:24,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 03:01:24,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 03:01:24,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:01:24,094 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:01:24,094 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:01:24,095 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:01:24,095 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 03:01:24,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 03:01:24,095 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:01:24,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 03:01:24,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 03:01:24 BoogieIcfgContainer [2019-11-20 03:01:24,100 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 03:01:24,100 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:01:24,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:01:24,100 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:01:24,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:21" (3/4) ... [2019-11-20 03:01:24,103 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 03:01:24,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:01:24,105 INFO L168 Benchmark]: Toolchain (without parser) took 3250.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -127.5 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-11-20 03:01:24,106 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:01:24,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -210.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 03:01:24,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:01:24,107 INFO L168 Benchmark]: Boogie Preprocessor took 15.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:01:24,107 INFO L168 Benchmark]: RCFGBuilder took 181.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 03:01:24,108 INFO L168 Benchmark]: BuchiAutomizer took 2683.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 11.5 GB. [2019-11-20 03:01:24,108 INFO L168 Benchmark]: Witness Printer took 3.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:01:24,111 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -210.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 181.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2683.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function i + -1 * m and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 29 SDslu, 6 SDs, 0 SdLazy, 47 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax183 hnf98 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq147 hnf94 smp100 dnf100 smp100 tf108 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...