./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo.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_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo.c -s /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 4ee0473dc6d7092e83742edafdde9370f3b93e25 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:56:36,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:56:36,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:56:36,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:56:36,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:56:36,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:56:36,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:56:36,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:56:36,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:56:36,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:56:36,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:56:36,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:56:36,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:56:36,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:56:36,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:56:36,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:56:36,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:56:36,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:56:36,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:56:36,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:56:36,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:56:36,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:56:36,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:56:36,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:56:36,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:56:36,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:56:36,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:56:36,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:56:36,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:56:36,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:56:36,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:56:36,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:56:36,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:56:36,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:56:36,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:56:36,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:56:36,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:56:36,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:56:36,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:56:36,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:56:36,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:56:36,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:56:36,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:56:36,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:56:36,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:56:36,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:56:36,555 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:56:36,555 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:56:36,555 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:56:36,556 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:56:36,556 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:56:36,556 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:56:36,557 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:56:36,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:56:36,558 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:56:36,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:56:36,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:56:36,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:56:36,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:56:36,559 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:56:36,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:56:36,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:56:36,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:56:36,560 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:56:36,561 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:56:36,561 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_afd007e2-e75c-41a3-9b98-7acb58845bc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee0473dc6d7092e83742edafdde9370f3b93e25 [2020-11-30 00:56:36,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:56:36,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:56:36,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:56:36,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:56:36,864 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:56:36,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Cairo.c [2020-11-30 00:56:36,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/data/933a0318e/7b749695758243eb9f78b620931c680b/FLAGa54487746 [2020-11-30 00:56:37,657 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:56:37,658 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/sv-benchmarks/c/termination-crafted/Cairo.c [2020-11-30 00:56:37,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/data/933a0318e/7b749695758243eb9f78b620931c680b/FLAGa54487746 [2020-11-30 00:56:38,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/data/933a0318e/7b749695758243eb9f78b620931c680b [2020-11-30 00:56:38,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:56:38,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:56:38,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:38,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:56:38,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:56:38,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485a18f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38, skipping insertion in model container [2020-11-30 00:56:38,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:56:38,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:56:38,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:38,240 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:56:38,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:56:38,306 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:56:38,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38 WrapperNode [2020-11-30 00:56:38,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:56:38,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:56:38,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:56:38,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:56:38,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:56:38,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:56:38,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:56:38,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:56:38,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... [2020-11-30 00:56:38,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:56:38,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:56:38,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:56:38,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:56:38,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 [2020-11-30 00:56:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:56:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:56:38,628 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:56:38,629 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:56:38,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:38 BoogieIcfgContainer [2020-11-30 00:56:38,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:56:38,634 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:56:38,634 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:56:38,640 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:56:38,642 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:56:38,642 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:56:38" (1/3) ... [2020-11-30 00:56:38,644 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@341d3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:56:38, skipping insertion in model container [2020-11-30 00:56:38,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:56:38,645 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:56:38" (2/3) ... [2020-11-30 00:56:38,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@341d3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:56:38, skipping insertion in model container [2020-11-30 00:56:38,647 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:56:38,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:38" (3/3) ... [2020-11-30 00:56:38,649 INFO L373 chiAutomizerObserver]: Analyzing ICFG Cairo.c [2020-11-30 00:56:38,729 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:56:38,729 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:56:38,729 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:56:38,729 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:56:38,730 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:56:38,730 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:56:38,730 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:56:38,730 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:56:38,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-30 00:56:38,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:56:38,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:56:38,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:56:38,784 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:56:38,784 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:56:38,784 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:56:38,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-30 00:56:38,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:56:38,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:56:38,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:56:38,787 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:56:38,787 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:56:38,797 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 9#L20true assume main_~x~0 > 0; 5#L21-2true [2020-11-30 00:56:38,797 INFO L796 eck$LassoCheckResult]: Loop: 5#L21-2true assume !!(0 != main_~x~0);main_~x~0 := main_~x~0 - 1; 5#L21-2true [2020-11-30 00:56:38,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-30 00:56:38,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:38,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158424024] [2020-11-30 00:56:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:38,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:38,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:38,972 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:56:38,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:38,979 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2020-11-30 00:56:38,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:38,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360277606] [2020-11-30 00:56:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:39,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:39,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:39,023 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:56:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:39,027 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-11-30 00:56:39,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:56:39,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726848593] [2020-11-30 00:56:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:56:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:39,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:56:39,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:56:39,071 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:56:39,271 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:56:39,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:56:39,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:56:39,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:56:39,272 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:56:39,273 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:39,273 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:56:39,273 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:56:39,273 INFO L133 ssoRankerPreferences]: Filename of dumped script: Cairo.c_Iteration1_Loop [2020-11-30 00:56:39,274 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:56:39,274 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:56:39,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:39,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:39,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:39,573 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:56:39,574 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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) [2020-11-30 00:56:39,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:39,585 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:39,595 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:56:39,596 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_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 [2020-11-30 00:56:39,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:39,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:56:39,638 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:56:39,638 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_afd007e2-e75c-41a3-9b98-7acb58845bc0/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) [2020-11-30 00:56:39,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:39,691 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 [2020-11-30 00:56:39,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:56:39,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:56:39,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:56:39,755 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=-4} Honda state: {ULTIMATE.start_main_~x~0=-4} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 8, 14] Nus: [0, 0] [2020-11-30 00:56:39,819 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:56:39,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:56:39,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:56:39,820 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:56:39,820 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:56:39,820 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:39,820 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:56:39,820 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:56:39,820 INFO L133 ssoRankerPreferences]: Filename of dumped script: Cairo.c_Iteration1_Lasso [2020-11-30 00:56:39,821 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:56:39,821 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:56:39,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:39,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:39,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:39,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:39,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:40,172 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:56:40,172 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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) [2020-11-30 00:56:40,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:40,182 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,188 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:56:40,188 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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) [2020-11-30 00:56:40,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:40,241 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,251 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:56:40,251 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_2=0} Honda state: {v_rep~unnamed0~0~false_2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:40,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:56:40,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:56:40,287 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_2=1} Honda state: {v_rep~unnamed0~0~true_2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 [2020-11-30 00:56:40,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:40,316 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:56:40,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:56:40,325 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 [2020-11-30 00:56:40,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:56:40,358 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 [2020-11-30 00:56:40,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:56:40,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:56:40,435 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:56:40,441 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:56:40,441 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:56:40,441 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:56:40,442 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:56:40,442 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:56:40,442 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,442 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:56:40,442 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:56:40,442 INFO L133 ssoRankerPreferences]: Filename of dumped script: Cairo.c_Iteration1_Lasso [2020-11-30 00:56:40,442 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:56:40,442 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:56:40,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:40,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:40,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:40,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:40,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:56:40,617 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:56:40,622 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/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 [2020-11-30 00:56:40,630 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 [2020-11-30 00:56:40,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:56:40,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:56:40,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:56:40,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:56:40,640 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:56:40,641 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:56:40,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:56:40,697 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 [2020-11-30 00:56:40,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:56:40,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:56:40,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:56:40,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,705 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:56:40,705 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:56:40,724 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,766 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 [2020-11-30 00:56:40,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:56:40,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:56:40,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:56:40,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:56:40,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:56:40,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:56:40,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:56:40,773 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,812 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 [2020-11-30 00:56:40,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:56:40,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:56:40,815 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:56:40,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:56:40,830 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-30 00:56:40,830 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-30 00:56:40,857 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:56:40,892 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-30 00:56:40,892 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afd007e2-e75c-41a3-9b98-7acb58845bc0/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:56:40,921 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:56:40,930 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-11-30 00:56:40,930 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:56:40,931 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2020-11-30 00:56:41,002 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-30 00:56:41,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:56:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:41,059 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:56:41,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:56:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:56:41,078 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:56:41,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:56:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:56:41,102 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 [2020-11-30 00:56:41,108 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 2 states. [2020-11-30 00:56:41,189 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 2 states. Result 20 states and 23 transitions. Complement of second has 5 states. [2020-11-30 00:56:41,191 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 [2020-11-30 00:56:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:56:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-30 00:56:41,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-30 00:56:41,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:56:41,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-30 00:56:41,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:56:41,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-30 00:56:41,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:56:41,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-11-30 00:56:41,208 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:56:41,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2020-11-30 00:56:41,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:56:41,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:56:41,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:56:41,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:56:41,214 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:56:41,215 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:56:41,215 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:56:41,215 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:56:41,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:56:41,216 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:56:41,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:56:41,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:56:41 BoogieIcfgContainer [2020-11-30 00:56:41,223 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:56:41,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:56:41,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:56:41,226 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:56:41,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:56:38" (3/4) ... [2020-11-30 00:56:41,232 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:56:41,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:56:41,235 INFO L168 Benchmark]: Toolchain (without parser) took 3212.55 ms. Allocated memory is still 111.1 MB. Free memory was 78.1 MB in the beginning and 41.4 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:41,237 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 84.8 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:41,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.86 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 88.8 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:41,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 111.1 MB. Free memory was 88.8 MB in the beginning and 87.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:41,242 INFO L168 Benchmark]: Boogie Preprocessor took 21.88 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.9 MB in the end (delta: 599.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:41,244 INFO L168 Benchmark]: RCFGBuilder took 263.72 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 79.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:41,250 INFO L168 Benchmark]: BuchiAutomizer took 2590.46 ms. Allocated memory is still 111.1 MB. Free memory was 78.4 MB in the beginning and 41.4 MB in the end (delta: 37.0 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:56:41,250 INFO L168 Benchmark]: Witness Printer took 6.91 ms. Allocated memory is still 111.1 MB. Free memory is still 41.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:56:41,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 84.8 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.86 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 88.8 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 111.1 MB. Free memory was 88.8 MB in the beginning and 87.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.88 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.9 MB in the end (delta: 599.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 263.72 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 79.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2590.46 ms. Allocated memory is still 111.1 MB. Free memory was 78.4 MB in the beginning and 41.4 MB in the end (delta: 37.0 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.91 ms. Allocated memory is still 111.1 MB. Free memory is still 41.4 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 affine ranking function x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. 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: 9 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq181 hnf95 smp100 dnf156 smp100 tf102 neg94 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 127ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...