./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/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 85017c4a5a64f245bd703090448e8d5785d54b75 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:47:07,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:07,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:07,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:07,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:07,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:07,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:07,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:07,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:07,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:07,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:07,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:07,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:07,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:07,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:07,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:07,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:07,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:07,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:07,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:07,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:07,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:07,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:07,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:07,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:07,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:07,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:07,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:07,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:07,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:07,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:07,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:07,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:07,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:07,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:07,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:07,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:07,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:07,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:07,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:07,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:07,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:47:07,870 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:07,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:07,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:07,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:07,871 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:07,871 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:47:07,871 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:47:07,872 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:47:07,872 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:47:07,872 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:47:07,872 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:47:07,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:07,872 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:47:07,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:07,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:07,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:47:07,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:47:07,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:47:07,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:07,874 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:47:07,874 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:07,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:47:07,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:07,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:07,874 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:47:07,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:07,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:47:07,875 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:47:07,876 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:47:07,876 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/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 -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2019-11-25 08:47:08,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:08,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:08,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:08,066 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:08,067 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:08,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2019-11-25 08:47:08,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/data/22577f9a4/b3773913507f45f6853c463a7fac60bc/FLAG7cabe9edb [2019-11-25 08:47:08,498 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:08,498 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2019-11-25 08:47:08,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/data/22577f9a4/b3773913507f45f6853c463a7fac60bc/FLAG7cabe9edb [2019-11-25 08:47:08,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/data/22577f9a4/b3773913507f45f6853c463a7fac60bc [2019-11-25 08:47:08,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:08,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:08,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:08,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:08,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:08,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:08" (1/1) ... [2019-11-25 08:47:08,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759452e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:08, skipping insertion in model container [2019-11-25 08:47:08,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:08" (1/1) ... [2019-11-25 08:47:08,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:08,956 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:09,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:09,097 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:09,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:09,184 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:09,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09 WrapperNode [2019-11-25 08:47:09,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:09,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:09,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:09,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:09,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:09,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:09,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:09,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:09,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... [2019-11-25 08:47:09,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:09,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:09,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:09,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:09,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:09,421 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:09,422 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:47:09,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:09 BoogieIcfgContainer [2019-11-25 08:47:09,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:09,423 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:47:09,424 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:47:09,427 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:47:09,427 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:47:09,428 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:47:08" (1/3) ... [2019-11-25 08:47:09,429 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b135442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:47:09, skipping insertion in model container [2019-11-25 08:47:09,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:47:09,431 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:09" (2/3) ... [2019-11-25 08:47:09,431 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b135442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:47:09, skipping insertion in model container [2019-11-25 08:47:09,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:47:09,431 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:09" (3/3) ... [2019-11-25 08:47:09,433 INFO L371 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2019-11-25 08:47:09,481 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:47:09,481 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:47:09,481 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:47:09,481 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:09,481 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:09,481 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:47:09,481 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:09,481 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:47:09,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-11-25 08:47:09,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:47:09,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:09,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:09,523 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:47:09,524 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:47:09,524 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:47:09,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-11-25 08:47:09,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:47:09,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:09,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:09,525 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:47:09,526 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:47:09,533 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := 1; 5#L18-2true [2019-11-25 08:47:09,533 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - main_~y~0;main_~y~0 := 1 + main_~y~0; 5#L18-2true [2019-11-25 08:47:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:47:09,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:09,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406773795] [2019-11-25 08:47:09,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:09,657 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:09,658 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-11-25 08:47:09,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:09,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155154226] [2019-11-25 08:47:09,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:09,688 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:09,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:47:09,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:09,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90317830] [2019-11-25 08:47:09,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:09,718 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:09,840 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:09,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:09,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:09,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:09,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:47:09,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:09,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:09,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:09,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop [2019-11-25 08:47:09,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:09,842 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:09,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:09,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:09,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:10,022 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:10,023 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/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 [2019-11-25 08:47:10,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:10,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:10,041 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:10,042 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/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 [2019-11-25 08:47:10,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:10,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:10,054 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:10,054 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/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 [2019-11-25 08:47:10,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:10,064 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:10,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:47:10,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:12,198 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:47:12,200 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:12,200 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:12,200 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:12,200 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:12,200 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:47:12,200 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:12,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:12,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop [2019-11-25 08:47:12,201 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:12,201 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:12,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:12,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:12,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:12,321 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:12,325 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,344 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:47:12,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:12,347 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:12,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:12,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:12,358 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:47:12,360 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:47:12,369 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,376 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:47:12,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:12,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:12,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:12,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:12,382 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:47:12,382 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:47:12,389 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:47:12,405 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 Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:12,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:12,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:12,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:12,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:12,410 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:12,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:47:12,414 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-25 08:47:12,416 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/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) [2019-11-25 08:47:12,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:47:12,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:12,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:12,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:12,438 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:47:12,450 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-25 08:47:12,450 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,463 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/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) [2019-11-25 08:47:12,478 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:47:12,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:12,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:12,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:12,481 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:47:12,489 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-25 08:47:12,489 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,499 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:47:12,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:47:12,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:12,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:12,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:12,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:12,518 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:47:12,526 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-25 08:47:12,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,531 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:47:12,536 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:47:12,536 INFO L444 ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4722fa43-9c0c-4b28-8d9b-d58c960b2db2/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:12,545 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:47:12,545 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:47:12,546 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:47:12,546 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = -2*ULTIMATE.start_main_~y~0 + 1 f1 = 2*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:47:12,551 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:47:12,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:12,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:47:12,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:12,612 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:47:12,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:12,628 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 [2019-11-25 08:47:12,629 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2019-11-25 08:47:12,666 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states.. Second operand 2 states. Result 15 states and 18 transitions. Complement of second has 5 states. [2019-11-25 08:47:12,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:47:12,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:47:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-25 08:47:12,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2019-11-25 08:47:12,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:12,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-25 08:47:12,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:12,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-25 08:47:12,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:12,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2019-11-25 08:47:12,675 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:47:12,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2019-11-25 08:47:12,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:47:12,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:47:12,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:47:12,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:47:12,680 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:12,680 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:12,680 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:12,680 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:47:12,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:47:12,680 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:47:12,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:47:12,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:47:12 BoogieIcfgContainer [2019-11-25 08:47:12,686 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:47:12,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:47:12,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:47:12,687 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:47:12,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:09" (3/4) ... [2019-11-25 08:47:12,690 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:47:12,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:47:12,693 INFO L168 Benchmark]: Toolchain (without parser) took 3763.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 951.4 MB in the beginning and 999.0 MB in the end (delta: -47.6 MB). Peak memory consumption was 93.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:12,697 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:12,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:12,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:12,699 INFO L168 Benchmark]: Boogie Preprocessor took 17.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:12,700 INFO L168 Benchmark]: RCFGBuilder took 190.10 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: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:12,702 INFO L168 Benchmark]: BuchiAutomizer took 3262.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.0 MB in the end (delta: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:12,707 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 1.2 GB. Free memory is still 999.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:12,712 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 190.10 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: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3262.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.0 MB in the end (delta: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.17 ms. Allocated memory is still 1.2 GB. Free memory is still 999.0 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if -2 * y + 1 > 0 then 1 else 0), (if -2 * y + 1 > 0 then -2 * y + 1 else 2 * x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. 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 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf93 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...