./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.16.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_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.16.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 59f77c8e05911b32b52175a230b989da0fe83a06 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:02:19,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:19,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:19,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:19,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:19,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:19,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:19,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:19,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:19,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:19,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:19,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:19,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:19,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:19,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:19,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:19,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:19,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:19,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:19,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:19,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:19,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:19,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:19,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:19,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:19,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:19,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:19,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:19,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:19,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:19,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:19,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:19,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:19,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:19,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:19,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:19,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:19,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:19,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:19,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:19,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:19,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:02:19,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:19,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:19,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:19,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:19,215 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:19,215 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:02:19,215 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:02:19,215 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:02:19,216 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:02:19,216 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:02:19,216 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:02:19,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:19,217 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:19,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:19,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:19,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:02:19,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:02:19,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:02:19,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:19,218 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:02:19,218 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:19,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:02:19,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:19,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:19,218 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:02:19,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:19,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:19,219 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:02:19,219 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:02:19,220 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_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 -> 59f77c8e05911b32b52175a230b989da0fe83a06 [2019-10-22 09:02:19,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:19,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:19,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:19,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:19,267 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:19,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.16.c [2019-10-22 09:02:19,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/data/70cd0268d/6bf16b1542954fe89378d1776f44f989/FLAG659043caa [2019-10-22 09:02:19,676 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:19,677 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/sv-benchmarks/c/termination-restricted-15/b.16.c [2019-10-22 09:02:19,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/data/70cd0268d/6bf16b1542954fe89378d1776f44f989/FLAG659043caa [2019-10-22 09:02:19,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/data/70cd0268d/6bf16b1542954fe89378d1776f44f989 [2019-10-22 09:02:19,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:19,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:19,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:19,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:19,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:19,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:19" (1/1) ... [2019-10-22 09:02:19,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395d5d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:19, skipping insertion in model container [2019-10-22 09:02:19,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:19" (1/1) ... [2019-10-22 09:02:19,708 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:19,727 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:19,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:19,891 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:20,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:20,019 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:20,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20 WrapperNode [2019-10-22 09:02:20,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:20,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:20,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:20,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:20,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:20,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:20,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:20,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:20,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... [2019-10-22 09:02:20,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:20,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:20,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:20,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:20,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 09:02:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:20,215 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:20,216 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:02:20,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:20 BoogieIcfgContainer [2019-10-22 09:02:20,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:20,218 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:02:20,218 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:02:20,221 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:02:20,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:20,222 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:02:19" (1/3) ... [2019-10-22 09:02:20,223 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@111f275b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:20, skipping insertion in model container [2019-10-22 09:02:20,223 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:20,223 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:20" (2/3) ... [2019-10-22 09:02:20,224 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@111f275b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:20, skipping insertion in model container [2019-10-22 09:02:20,224 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:20,224 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:20" (3/3) ... [2019-10-22 09:02:20,226 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.16.c [2019-10-22 09:02:20,280 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:02:20,281 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:02:20,281 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:02:20,281 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:20,281 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:20,281 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:02:20,281 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:20,282 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:02:20,298 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:02:20,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:02:20,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:20,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:20,332 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:20,332 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:20,332 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:02:20,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:02:20,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:02:20,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:20,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:20,333 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:20,334 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:20,340 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 9#L11-2true [2019-10-22 09:02:20,341 INFO L793 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~x~0 > 0); 3#L12-2true assume !(main_~y~0 > 0); 10#L12-3true main_~x~0 := main_~x~0 - 1; 9#L11-2true [2019-10-22 09:02:20,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:20,347 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 09:02:20,355 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:20,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684566854] [2019-10-22 09:02:20,356 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:20,356 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:20,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:20,453 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:20,455 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-10-22 09:02:20,455 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:20,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711182658] [2019-10-22 09:02:20,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:20,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:20,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:20,468 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:20,470 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-10-22 09:02:20,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:20,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637393636] [2019-10-22 09:02:20,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:20,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:20,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:20,489 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:20,566 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:20,567 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:20,567 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:20,567 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:20,568 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:20,568 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:20,568 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:20,568 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:20,568 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2019-10-22 09:02:20,568 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:20,569 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:20,589 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 09:02:20,598 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 09:02:20,602 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 09:02:20,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:20,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:20,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 09:02:20,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:20,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:20,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:20,729 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_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 09:02:20,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:20,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:20,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:20,754 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_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 09:02:20,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:20,767 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 09:02:20,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:20,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:20,792 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:20,794 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:20,794 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:20,794 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:20,795 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:20,795 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:20,795 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:20,795 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:20,795 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:20,796 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2019-10-22 09:02:20,796 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:20,796 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:20,798 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 09:02:20,804 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 09:02:20,809 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 09:02:20,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:20,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:20,870 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:20,872 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 09:02:20,873 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:20,874 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:20,874 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:20,874 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:20,878 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:20,879 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:20,886 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:20,887 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 09:02:20,887 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:20,887 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:20,888 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:20,888 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:20,891 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:20,892 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:20,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:20,904 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 09:02:20,906 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:20,911 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:20,912 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:20,912 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:20,912 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:20,913 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:20,913 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:20,922 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:20,927 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:20,929 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:20,931 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:20,931 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:20,931 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:20,932 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-10-22 09:02:20,935 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:20,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:20,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:20,991 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:20,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:21,013 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 09:02:21,030 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 09:02:21,032 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 09:02:21,074 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 09:02:21,076 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 09:02:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-10-22 09:02:21,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 09:02:21,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:21,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 09:02:21,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:21,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 09:02:21,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:21,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-10-22 09:02:21,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:02:21,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-10-22 09:02:21,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-10-22 09:02:21,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-10-22 09:02:21,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-10-22 09:02:21,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:21,096 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 09:02:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-10-22 09:02:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-10-22 09:02:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 09:02:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-10-22 09:02:21,118 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-10-22 09:02:21,118 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-10-22 09:02:21,118 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:02:21,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-10-22 09:02:21,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:02:21,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:21,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:21,119 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:02:21,119 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 09:02:21,119 INFO L791 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 74#L11-2 assume !!(main_~x~0 > 0); 70#L12-2 [2019-10-22 09:02:21,119 INFO L793 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~y~0 > 0);main_~y~0 := main_~y~0 - 1; 70#L12-2 [2019-10-22 09:02:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 09:02:21,120 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:21,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929924880] [2019-10-22 09:02:21,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:21,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:21,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:21,127 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:21,128 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-10-22 09:02:21,128 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:21,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929824048] [2019-10-22 09:02:21,128 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:21,128 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:21,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:21,133 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:21,134 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-10-22 09:02:21,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:21,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209557224] [2019-10-22 09:02:21,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:21,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:21,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:21,147 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:21,164 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:21,165 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:21,165 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:21,165 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:21,165 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:21,165 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:21,165 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:21,165 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:21,165 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2019-10-22 09:02:21,165 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:21,166 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:21,167 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 09:02:21,170 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 09:02:21,173 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 09:02:21,215 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:21,216 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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) [2019-10-22 09:02:21,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:21,227 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:21,231 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:21,232 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_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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) [2019-10-22 09:02:21,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:21,242 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:21,248 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:21,248 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/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:21,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:21,253 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ad59fbe-4b96-4691-ab3a-b5f584156b49/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 [2019-10-22 09:02:21,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:21,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:21,273 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:21,277 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:21,277 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:21,277 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:21,277 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:21,277 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:21,277 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:21,277 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:21,277 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:21,278 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2019-10-22 09:02:21,278 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:21,278 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:21,279 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 09:02:21,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:21,288 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 09:02:21,328 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:21,329 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:21,329 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 09:02:21,330 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:21,330 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:21,330 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:21,330 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:21,332 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:21,332 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:21,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:21,339 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 09:02:21,339 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:21,340 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:21,340 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:21,340 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:21,342 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:21,343 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:21,343 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:21,346 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:21,350 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:21,350 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:21,351 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:21,351 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:21,351 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:21,351 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-10-22 09:02:21,352 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:21,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:21,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:21,373 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:21,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:21,373 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 09:02:21,374 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 09:02:21,374 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-10-22 09:02:21,381 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 4 states. [2019-10-22 09:02:21,382 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 09:02:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:02:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-10-22 09:02:21,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2019-10-22 09:02:21,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:21,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 09:02:21,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:21,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2019-10-22 09:02:21,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:21,384 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-10-22 09:02:21,385 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:21,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-10-22 09:02:21,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:02:21,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:02:21,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:02:21,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:21,385 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:21,385 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:21,386 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:21,386 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:02:21,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:21,386 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:21,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:02:21,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:02:21 BoogieIcfgContainer [2019-10-22 09:02:21,392 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:02:21,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:21,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:21,393 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:21,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:20" (3/4) ... [2019-10-22 09:02:21,397 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:02:21,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:21,399 INFO L168 Benchmark]: Toolchain (without parser) took 1705.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -73.7 MB). Peak memory consumption was 85.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:21,400 INFO L168 Benchmark]: CDTParser took 0.16 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. [2019-10-22 09:02:21,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -207.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:21,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.18 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. [2019-10-22 09:02:21,401 INFO L168 Benchmark]: Boogie Preprocessor took 14.45 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. [2019-10-22 09:02:21,402 INFO L168 Benchmark]: RCFGBuilder took 153.43 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:21,402 INFO L168 Benchmark]: BuchiAutomizer took 1174.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:21,402 INFO L168 Benchmark]: Witness Printer took 4.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:21,405 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 326.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -207.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.18 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 14.45 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 153.43 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1174.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 116.8 MB). Peak memory consumption was 116.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 10 SDs, 0 SdLazy, 9 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...