./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.08.c -s /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:59:34,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:34,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:34,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:34,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:34,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:34,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:34,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:34,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:34,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:34,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:34,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:34,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:34,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:34,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:34,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:34,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:34,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:34,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:34,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:34,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:34,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:34,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:34,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:34,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:34,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:34,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:34,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:34,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:34,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:34,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:34,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:34,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:34,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:34,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:34,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:34,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:34,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:34,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:34,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:34,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:34,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:59:34,169 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:34,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:34,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:34,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:34,170 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:34,170 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:59:34,171 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:59:34,171 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:59:34,171 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:59:34,171 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:59:34,171 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:59:34,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:34,171 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:59:34,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:34,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:34,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:59:34,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:59:34,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:59:34,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:34,173 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:59:34,173 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:34,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:59:34,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:34,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:34,174 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:59:34,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:34,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:34,174 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:59:34,175 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:59:34,175 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/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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 -> 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 [2019-10-22 08:59:34,213 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:34,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:34,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:34,229 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:34,230 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:34,230 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.08.c [2019-10-22 08:59:34,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/data/85a170afd/5b49b07d4fe54684aa9666184107d989/FLAG3c19c2afc [2019-10-22 08:59:34,663 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:34,664 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/sv-benchmarks/c/termination-restricted-15/c.08.c [2019-10-22 08:59:34,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/data/85a170afd/5b49b07d4fe54684aa9666184107d989/FLAG3c19c2afc [2019-10-22 08:59:34,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/data/85a170afd/5b49b07d4fe54684aa9666184107d989 [2019-10-22 08:59:34,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:34,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:34,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:34,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:34,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:34,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e25cc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34, skipping insertion in model container [2019-10-22 08:59:34,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:34,706 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:34,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:34,822 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:34,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:34,901 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:34,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34 WrapperNode [2019-10-22 08:59:34,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:34,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:34,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:34,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:34,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:34,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:34,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:34,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:34,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... [2019-10-22 08:59:34,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:34,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:34,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:34,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:34,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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 [2019-10-22 08:59:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:35,141 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:35,141 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:59:35,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:35 BoogieIcfgContainer [2019-10-22 08:59:35,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:35,143 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:59:35,143 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:59:35,148 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:59:35,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:35,149 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:59:34" (1/3) ... [2019-10-22 08:59:35,150 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25f1a7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:35, skipping insertion in model container [2019-10-22 08:59:35,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:35,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:34" (2/3) ... [2019-10-22 08:59:35,151 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25f1a7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:35, skipping insertion in model container [2019-10-22 08:59:35,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:35,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:35" (3/3) ... [2019-10-22 08:59:35,153 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.08.c [2019-10-22 08:59:35,229 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:59:35,229 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:59:35,230 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:59:35,230 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:35,230 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:35,230 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:59:35,230 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:35,230 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:59:35,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:59:35,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:35,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:35,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:35,267 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:59:35,267 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:35,268 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:59:35,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:59:35,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:35,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:35,269 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:35,269 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:59:35,269 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:35,276 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-2true [2019-10-22 08:59:35,276 INFO L793 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 >= 0);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 <= main_~i~0 - 1); 10#L12-3true main_~i~0 := main_~i~0 - 1; 8#L10-2true [2019-10-22 08:59:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:59:35,297 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:35,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156451584] [2019-10-22 08:59:35,297 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:35,404 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:35,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-10-22 08:59:35,405 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:35,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567246513] [2019-10-22 08:59:35,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:35,417 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:35,419 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-10-22 08:59:35,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:35,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336235127] [2019-10-22 08:59:35,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:35,435 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:35,479 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:35,480 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:35,480 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:35,480 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:35,480 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:35,480 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:35,480 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:35,480 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:35,480 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-10-22 08:59:35,481 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:35,481 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:35,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:35,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:35,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:35,614 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:35,614 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:35,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:35,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:35,631 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:35,632 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/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:35,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:35,637 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:35,641 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:35,642 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/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:35,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:35,646 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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 [2019-10-22 08:59:35,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:35,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:35,669 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:35,670 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:35,671 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:35,671 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:35,671 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:35,671 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:35,671 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:35,671 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:35,671 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:35,671 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-10-22 08:59:35,672 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:35,672 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:35,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:35,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:35,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:35,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:35,769 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:35,770 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 [2019-10-22 08:59:35,772 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:35,772 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:35,772 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:35,772 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:35,781 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:35,782 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:35,791 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:35,792 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 [2019-10-22 08:59:35,797 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:35,798 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:35,798 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:35,798 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:35,800 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:35,800 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:35,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:35,809 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 [2019-10-22 08:59:35,810 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:35,810 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:35,811 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:35,811 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:35,811 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:35,812 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:35,812 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:35,821 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:35,829 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:35,830 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:59:35,831 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:35,832 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:35,832 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:35,832 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2019-10-22 08:59:35,836 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:35,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:35,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:35,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:35,880 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:35,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:35,909 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 [2019-10-22 08:59:35,910 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 08:59:35,954 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-10-22 08:59:35,954 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 [2019-10-22 08:59:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:59:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-10-22 08:59:35,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 08:59:35,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:35,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:59:35,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:35,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 08:59:35,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:35,960 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-10-22 08:59:35,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:35,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-10-22 08:59:35,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-10-22 08:59:35,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-10-22 08:59:35,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-10-22 08:59:35,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:35,968 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:59:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-10-22 08:59:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-10-22 08:59:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 08:59:35,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-10-22 08:59:35,994 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-10-22 08:59:35,994 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-10-22 08:59:35,994 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:59:35,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-10-22 08:59:35,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:35,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:35,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:35,995 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:59:35,995 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:35,996 INFO L791 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 74#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 70#L12-2 [2019-10-22 08:59:35,996 INFO L793 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 70#L12-2 [2019-10-22 08:59:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:35,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:59:35,996 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:35,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295479491] [2019-10-22 08:59:35,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:35,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,003 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-10-22 08:59:36,004 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599277777] [2019-10-22 08:59:36,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,010 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-10-22 08:59:36,011 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482031154] [2019-10-22 08:59:36,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,020 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,030 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:36,030 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:36,030 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:36,030 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:36,030 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:36,030 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,030 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:36,030 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:36,030 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-10-22 08:59:36,031 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:36,031 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:36,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,074 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:36,074 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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 [2019-10-22 08:59:36,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:36,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:36,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:36,083 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/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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 [2019-10-22 08:59:36,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:36,094 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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) [2019-10-22 08:59:36,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:36,111 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,258 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:36,260 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:36,260 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:36,260 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:36,261 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:36,261 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:36,261 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,261 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:36,261 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:36,261 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-10-22 08:59:36,261 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:36,261 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:36,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,325 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:36,325 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:36,326 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 [2019-10-22 08:59:36,327 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:36,327 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:36,327 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:36,327 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:36,329 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:36,329 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:36,335 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:36,335 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 [2019-10-22 08:59:36,336 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:36,336 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:36,336 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:36,336 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:36,337 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:36,339 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:36,339 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:36,343 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:36,350 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:36,350 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:36,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:36,350 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:36,350 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:36,351 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:59:36,351 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,383 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:36,384 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:59:36,384 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-10-22 08:59:36,401 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2019-10-22 08:59:36,403 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 [2019-10-22 08:59:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 08:59:36,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-10-22 08:59:36,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 08:59:36,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-10-22 08:59:36,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-10-22 08:59:36,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:36,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-10-22 08:59:36,406 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-10-22 08:59:36,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-10-22 08:59:36,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-10-22 08:59:36,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:36,406 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-10-22 08:59:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-10-22 08:59:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-10-22 08:59:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 08:59:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-10-22 08:59:36,408 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-10-22 08:59:36,408 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-10-22 08:59:36,408 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:59:36,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-10-22 08:59:36,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:36,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:36,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:36,409 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-10-22 08:59:36,409 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:36,409 INFO L791 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 122#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 119#L12-2 assume !(main_~j~0 <= main_~i~0 - 1); 120#L12-3 main_~i~0 := main_~i~0 - 1; 123#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 118#L12-2 [2019-10-22 08:59:36,409 INFO L793 eck$LassoCheckResult]: Loop: 118#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 118#L12-2 [2019-10-22 08:59:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,409 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-10-22 08:59:36,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645266144] [2019-10-22 08:59:36,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:36,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645266144] [2019-10-22 08:59:36,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:36,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:59:36,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723994401] [2019-10-22 08:59:36,469 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:59:36,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,470 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-10-22 08:59:36,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873253592] [2019-10-22 08:59:36,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,488 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,502 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:36,502 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:36,502 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:36,502 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:36,502 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:36,502 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,502 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:36,503 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:36,503 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-10-22 08:59:36,503 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:36,503 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:36,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,547 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:36,547 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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) [2019-10-22 08:59:36,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:36,559 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:36,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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) [2019-10-22 08:59:36,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:36,571 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25510c38-b109-4a9a-81ba-e00fcc821992/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) [2019-10-22 08:59:36,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:36,584 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 [2019-10-22 08:59:36,747 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:36,749 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:36,750 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:36,750 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:36,750 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:36,750 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:36,750 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,750 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:36,750 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:36,751 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-10-22 08:59:36,751 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:36,751 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:36,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,800 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:36,801 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:36,801 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 [2019-10-22 08:59:36,802 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:36,802 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:36,802 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:36,802 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:36,802 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:36,803 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:36,803 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:36,815 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:36,824 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:59:36,824 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:36,824 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:36,825 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:36,825 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:36,825 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-10-22 08:59:36,832 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,861 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:36,862 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:59:36,862 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 08:59:36,878 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-10-22 08:59:36,879 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 [2019-10-22 08:59:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 08:59:36,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 08:59:36,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,880 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,909 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:36,909 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:59:36,910 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 08:59:36,919 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-10-22 08:59:36,921 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 [2019-10-22 08:59:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 08:59:36,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 08:59:36,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,921 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:36,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:36,947 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:36,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:36,947 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:59:36,947 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 08:59:36,967 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2019-10-22 08:59:36,969 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 [2019-10-22 08:59:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-10-22 08:59:36,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 08:59:36,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-10-22 08:59:36,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 08:59:36,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:36,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-10-22 08:59:36,971 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:36,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-10-22 08:59:36,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:59:36,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:59:36,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:59:36,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:59:36,972 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:36,972 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:36,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:36,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:59:36,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:59:36,978 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-10-22 08:59:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:36,981 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 08:59:36,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:59:36,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 08:59:36,981 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:36,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:59:36,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:59:36,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:59:36,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:59:36,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:59:36,982 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:36,983 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:36,983 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:36,983 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:59:36,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:59:36,983 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:36,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:59:36,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:59:36 BoogieIcfgContainer [2019-10-22 08:59:36,988 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:59:36,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:36,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:36,989 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:36,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:35" (3/4) ... [2019-10-22 08:59:36,993 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:59:36,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:36,995 INFO L168 Benchmark]: Toolchain (without parser) took 2313.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 948.7 MB in the beginning and 928.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 168.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:36,995 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:36,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -199.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:36,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.27 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:36,997 INFO L168 Benchmark]: Boogie Preprocessor took 17.56 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:36,998 INFO L168 Benchmark]: RCFGBuilder took 192.90 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:37,001 INFO L168 Benchmark]: BuchiAutomizer took 1845.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.0 MB in the end (delta: 196.5 MB). Peak memory consumption was 196.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:37,002 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory is still 928.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:37,004 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 220.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -199.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.27 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.56 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 192.90 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1845.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.0 MB in the end (delta: 196.5 MB). Peak memory consumption was 196.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory is still 928.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function i + -1 * j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax187 hnf98 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp96 dnf100 smp100 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 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...