./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 0.2.0-a4ecdab [2020-11-28 02:57:59,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:59,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:59,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:59,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:59,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:59,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:59,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:59,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:59,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:59,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:59,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:59,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:59,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:59,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:59,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:59,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:59,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:59,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:59,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:59,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:59,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:59,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:59,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:59,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:59,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:59,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:59,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:59,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:59,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:59,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:59,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:59,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:59,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:59,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:59,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:59,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:59,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:59,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:59,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:59,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:59,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:57:59,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:59,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:59,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:59,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:59,477 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:59,477 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:57:59,478 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:57:59,478 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:57:59,478 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:57:59,479 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:57:59,480 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:57:59,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:59,480 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:59,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:59,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:59,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:57:59,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:57:59,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:57:59,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:59,482 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:57:59,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:59,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:57:59,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:59,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:59,484 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:57:59,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:59,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:59,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:59,485 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:57:59,486 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:57:59,487 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2020-11-28 02:57:59,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:59,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:59,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:59,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:59,783 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:59,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-11-28 02:57:59,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/data/fe44b8c86/81a3b921cac54eafa2d29759e98248fe/FLAG244db4f29 [2020-11-28 02:58:00,343 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:00,344 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-11-28 02:58:00,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/data/fe44b8c86/81a3b921cac54eafa2d29759e98248fe/FLAG244db4f29 [2020-11-28 02:58:00,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/data/fe44b8c86/81a3b921cac54eafa2d29759e98248fe [2020-11-28 02:58:00,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:00,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:00,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:00,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:00,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:00,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec28ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00, skipping insertion in model container [2020-11-28 02:58:00,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:00,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:00,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:00,921 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:00,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:00,963 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:00,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00 WrapperNode [2020-11-28 02:58:00,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:00,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:00,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:00,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:00,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:00,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:01,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:01,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:01,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:01,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... [2020-11-28 02:58:01,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:01,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:01,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:01,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:01,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:01,232 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:01,232 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:58:01,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:01 BoogieIcfgContainer [2020-11-28 02:58:01,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:01,239 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:58:01,240 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:58:01,245 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:58:01,246 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:01,247 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:58:00" (1/3) ... [2020-11-28 02:58:01,248 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5baaa867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:01, skipping insertion in model container [2020-11-28 02:58:01,248 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:01,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:00" (2/3) ... [2020-11-28 02:58:01,248 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5baaa867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:01, skipping insertion in model container [2020-11-28 02:58:01,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:01,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:01" (3/3) ... [2020-11-28 02:58:01,250 INFO L373 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-11-28 02:58:01,296 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:58:01,296 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:58:01,297 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:58:01,297 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:01,297 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:01,297 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:58:01,297 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:01,297 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:58:01,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:58:01,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:01,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:01,328 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:01,334 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:58:01,334 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:01,335 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:58:01,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:58:01,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:01,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:01,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:01,336 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:58:01,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:01,343 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 [2020-11-28 02:58:01,344 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 [2020-11-28 02:58:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,350 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 02:58:01,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400762297] [2020-11-28 02:58:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:01,438 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:01,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:01,458 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-28 02:58:01,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182911474] [2020-11-28 02:58:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:01,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:01,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:01,498 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 02:58:01,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310247129] [2020-11-28 02:58:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:01,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:01,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:01,541 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:01,689 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:58:01,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:58:01,694 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:58:01,694 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:58:01,694 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:58:01,694 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:01,694 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:58:01,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:58:01,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop [2020-11-28 02:58:01,707 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:58:01,707 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:58:01,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:01,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:01,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:01,911 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:58:01,912 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:01,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:58:01,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:58:01,940 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:58:01,940 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_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:01,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:58:01,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:58:01,968 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:58:01,968 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_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:02,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:58:02,011 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:02,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:58:02,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:58:02,167 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:58:02,169 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:58:02,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:58:02,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:58:02,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:58:02,169 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:58:02,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:02,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:58:02,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:58:02,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop [2020-11-28 02:58:02,169 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:58:02,170 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:58:02,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:02,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:02,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:02,305 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:58:02,308 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:02,312 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 [2020-11-28 02:58:02,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:02,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:02,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:02,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:02,321 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:02,321 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:02,336 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:02,369 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 [2020-11-28 02:58:02,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:02,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:02,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:02,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:02,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:02,376 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:02,382 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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) [2020-11-28 02:58:02,427 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 [2020-11-28 02:58:02,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:02,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:02,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:02,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:02,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:02,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:02,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:02,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-28 02:58:02,471 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:02,474 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 [2020-11-28 02:58:02,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:02,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:02,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:02,476 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 02:58:02,481 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 02:58:02,481 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 02:58:02,490 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:02,514 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 [2020-11-28 02:58:02,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:02,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:02,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:02,516 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 02:58:02,522 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 02:58:02,522 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 02:58:02,530 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:02,583 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 [2020-11-28 02:58:02,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:02,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:02,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:02,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:02,585 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 02:58:02,589 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-11-28 02:58:02,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:02,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:58:02,633 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-28 02:58:02,633 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c3b0cb38-fa46-489a-bd77-218cc54676bf/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 [2020-11-28 02:58:02,641 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:58:02,641 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:58:02,641 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:58:02,642 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 [] [2020-11-28 02:58:02,680 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:58:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:58:02,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:02,739 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:58:02,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:02,756 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 [2020-11-28 02:58:02,757 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2020-11-28 02:58:02,847 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states.. Second operand 2 states. Result 15 states and 18 transitions. Complement of second has 5 states. [2020-11-28 02:58:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:58:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:58:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-28 02:58:02,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2020-11-28 02:58:02,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:02,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 02:58:02,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:02,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 02:58:02,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:02,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-28 02:58:02,867 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:58:02,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-11-28 02:58:02,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:58:02,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:58:02,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:58:02,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:02,872 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:02,872 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:02,872 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:02,872 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:58:02,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:02,872 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:58:02,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:58:02,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:02 BoogieIcfgContainer [2020-11-28 02:58:02,879 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:58:02,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:02,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:02,880 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:02,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:01" (3/4) ... [2020-11-28 02:58:02,884 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:58:02,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:02,889 INFO L168 Benchmark]: Toolchain (without parser) took 2149.79 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 86.0 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:02,890 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:02,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.86 ms. Allocated memory is still 111.1 MB. Free memory was 81.8 MB in the beginning and 90.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:02,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 111.1 MB. Free memory was 90.6 MB in the beginning and 89.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:02,897 INFO L168 Benchmark]: Boogie Preprocessor took 29.53 ms. Allocated memory is still 111.1 MB. Free memory was 89.2 MB in the beginning and 88.4 MB in the end (delta: 785.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:02,897 INFO L168 Benchmark]: RCFGBuilder took 196.35 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 81.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:02,899 INFO L168 Benchmark]: BuchiAutomizer took 1639.98 ms. Allocated memory is still 111.1 MB. Free memory was 80.8 MB in the beginning and 86.0 MB in the end (delta: -5.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:02,900 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 111.1 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:02,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 226.86 ms. Allocated memory is still 111.1 MB. Free memory was 81.8 MB in the beginning and 90.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 111.1 MB. Free memory was 90.6 MB in the beginning and 89.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.53 ms. Allocated memory is still 111.1 MB. Free memory was 89.2 MB in the beginning and 88.4 MB in the end (delta: 785.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 196.35 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 81.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1639.98 ms. Allocated memory is still 111.1 MB. Free memory was 80.8 MB in the beginning and 86.0 MB in the end (delta: -5.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.49 ms. Allocated memory is still 111.1 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 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 1.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. 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: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 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...