./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.12.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_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.12.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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 f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:06:49,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:06:49,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:06:49,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:06:49,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:06:49,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:06:49,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:06:49,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:06:49,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:06:49,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:06:49,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:06:49,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:06:49,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:06:49,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:06:49,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:06:49,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:06:49,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:06:49,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:06:49,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:06:49,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:06:49,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:06:49,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:06:49,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:06:49,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:06:49,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:06:49,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:06:49,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:06:49,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:06:49,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:06:49,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:06:49,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:06:49,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:06:49,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:06:49,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:06:49,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:06:49,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:06:49,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:06:49,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:06:49,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:06:49,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:06:49,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:06:49,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:06:49,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:06:49,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:06:49,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:06:49,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:06:49,656 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:06:49,656 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:06:49,657 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:06:49,657 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:06:49,657 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:06:49,657 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:06:49,658 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:06:49,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:06:49,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:06:49,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:06:49,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:06:49,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:06:49,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:06:49,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:06:49,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:06:49,660 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:06:49,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:06:49,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:06:49,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:06:49,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:06:49,661 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:06:49,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:06:49,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:06:49,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:06:49,662 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:06:49,666 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:06:49,666 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_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff [2020-11-29 19:06:49,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:06:50,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:06:50,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:06:50,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:06:50,014 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:06:50,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.12.c [2020-11-29 19:06:50,093 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/data/8cebb7893/1cd0f50fc8ff4218ba53700119a51843/FLAGf0f8f713a [2020-11-29 19:06:50,628 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:06:50,629 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/sv-benchmarks/c/termination-restricted-15/b.12.c [2020-11-29 19:06:50,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/data/8cebb7893/1cd0f50fc8ff4218ba53700119a51843/FLAGf0f8f713a [2020-11-29 19:06:51,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/data/8cebb7893/1cd0f50fc8ff4218ba53700119a51843 [2020-11-29 19:06:51,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:06:51,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:06:51,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:06:51,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:06:51,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:06:51,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5201d5fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51, skipping insertion in model container [2020-11-29 19:06:51,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:06:51,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:06:51,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:06:51,226 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:06:51,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:06:51,275 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:06:51,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51 WrapperNode [2020-11-29 19:06:51,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:06:51,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:06:51,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:06:51,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:06:51,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:06:51,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:06:51,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:06:51,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:06:51,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... [2020-11-29 19:06:51,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:06:51,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:06:51,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:06:51,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:06:51,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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 [2020-11-29 19:06:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:06:51,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:06:51,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:06:51,617 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 19:06:51,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:51 BoogieIcfgContainer [2020-11-29 19:06:51,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:06:51,620 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:06:51,620 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:06:51,625 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:06:51,625 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:06:51,626 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:06:51" (1/3) ... [2020-11-29 19:06:51,627 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f3b5869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:06:51, skipping insertion in model container [2020-11-29 19:06:51,627 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:06:51,627 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:51" (2/3) ... [2020-11-29 19:06:51,628 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f3b5869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:06:51, skipping insertion in model container [2020-11-29 19:06:51,628 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:06:51,628 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:51" (3/3) ... [2020-11-29 19:06:51,630 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.12.c [2020-11-29 19:06:51,698 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:06:51,699 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:06:51,699 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:06:51,699 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:06:51,699 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:06:51,699 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:06:51,700 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:06:51,700 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:06:51,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:06:51,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:06:51,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:51,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:51,742 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:06:51,742 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:06:51,742 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:06:51,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:06:51,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:06:51,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:51,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:51,745 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:06:51,745 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:06:51,753 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2020-11-29 19:06:51,753 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~x~0 > 0 || main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2020-11-29 19:06:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:06:51,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:51,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209589914] [2020-11-29 19:06:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:51,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:51,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:51,865 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:51,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-29 19:06:51,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:51,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860897712] [2020-11-29 19:06:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:51,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:51,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:51,883 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:51,885 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 19:06:51,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:51,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269154022] [2020-11-29 19:06:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:51,893 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:51,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:51,901 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:52,028 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:06:52,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:06:52,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:06:52,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:06:52,029 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:06:52,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:52,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:06:52,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:06:52,030 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2020-11-29 19:06:52,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:06:52,031 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:06:52,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:52,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:52,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:52,270 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:06:52,270 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:52,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:06:52,283 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 [2020-11-29 19:06:52,295 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:06:52,295 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_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:52,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:06:52,349 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:52,354 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:06:52,354 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_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:52,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:06:52,398 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_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:52,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:06:52,443 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:52,484 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:06:52,487 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:06:52,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:06:52,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:06:52,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:06:52,487 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:06:52,488 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:52,488 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:06:52,488 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:06:52,488 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2020-11-29 19:06:52,488 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:06:52,488 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:06:52,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:52,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:52,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:52,595 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:06:52,600 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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 [2020-11-29 19:06:52,631 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 [2020-11-29 19:06:52,636 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:06:52,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:06:52,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:06:52,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:06:52,645 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:06:52,645 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:06:52,657 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:52,702 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 [2020-11-29 19:06:52,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:06:52,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:06:52,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:06:52,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:06:52,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:06:52,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:52,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:52,762 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 [2020-11-29 19:06:52,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:06:52,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:06:52,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:06:52,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:06:52,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:06:52,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:06:52,772 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 [2020-11-29 19:06:52,777 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:06:52,783 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:06:52,784 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:52,794 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:06:52,794 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:06:52,794 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:06:52,795 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:52,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:06:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:52,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:06:52,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:06:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:52,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:06:52,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:06:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:06:52,938 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 [2020-11-29 19:06:52,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 19:06:52,993 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2020-11-29 19:06:52,994 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 [2020-11-29 19:06:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:06:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-11-29 19:06:52,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 19:06:52,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:06:52,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 19:06:52,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:06:53,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 19:06:53,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:06:53,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2020-11-29 19:06:53,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:06:53,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2020-11-29 19:06:53,008 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 19:06:53,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 19:06:53,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-11-29 19:06:53,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:06:53,009 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-11-29 19:06:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-11-29 19:06:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-29 19:06:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 19:06:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-11-29 19:06:53,046 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-11-29 19:06:53,046 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-11-29 19:06:53,047 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:06:53,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-11-29 19:06:53,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:06:53,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:53,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:53,051 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:06:53,051 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:06:53,051 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2020-11-29 19:06:53,051 INFO L796 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2020-11-29 19:06:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:53,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 19:06:53,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:53,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073208568] [2020-11-29 19:06:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:53,070 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:53,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:53,083 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:53,084 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-11-29 19:06:53,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:53,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859492632] [2020-11-29 19:06:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:53,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:53,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:53,119 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:53,121 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-11-29 19:06:53,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:53,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292621317] [2020-11-29 19:06:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:53,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:53,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:53,163 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:53,206 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:06:53,206 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:06:53,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:06:53,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:06:53,206 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:06:53,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,207 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:06:53,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:06:53,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2020-11-29 19:06:53,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:06:53,207 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:06:53,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,337 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:06:53,337 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:53,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:06:53,375 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:06:53,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:53,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:06:53,425 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,431 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:06:53,431 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:53,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:06:53,473 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:53,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:06:53,518 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,595 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:06:53,597 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:06:53,597 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:06:53,597 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:06:53,597 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:06:53,597 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:06:53,597 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,597 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:06:53,597 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:06:53,597 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2020-11-29 19:06:53,598 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:06:53,598 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:06:53,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:06:53,736 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:06:53,736 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:53,740 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 [2020-11-29 19:06:53,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:06:53,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:06:53,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:06:53,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:06:53,751 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:06:53,751 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,765 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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 [2020-11-29 19:06:53,788 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 [2020-11-29 19:06:53,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:06:53,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:06:53,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:06:53,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:06:53,794 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:06:53,794 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:06:53,799 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/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) [2020-11-29 19:06:53,832 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 [2020-11-29 19:06:53,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:06:53,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:06:53,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:06:53,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:06:53,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:06:53,837 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:06:53,841 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:06:53,845 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:06:53,845 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3efd1ea1-3d26-4f18-9ae8-a620e67806ca/bin/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:06:53,850 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:06:53,850 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:06:53,850 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:06:53,850 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-29 19:06:53,871 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:06:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:53,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:06:53,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:06:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:53,915 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:06:53,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:06:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:06:53,998 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 19:06:53,998 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-29 19:06:54,043 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2020-11-29 19:06:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:06:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:06:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-29 19:06:54,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-29 19:06:54,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:06:54,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 19:06:54,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:06:54,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-29 19:06:54,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:06:54,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2020-11-29 19:06:54,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:06:54,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2020-11-29 19:06:54,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 19:06:54,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 19:06:54,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2020-11-29 19:06:54,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:06:54,051 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-11-29 19:06:54,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2020-11-29 19:06:54,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-11-29 19:06:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 19:06:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2020-11-29 19:06:54,062 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-29 19:06:54,062 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-29 19:06:54,062 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:06:54,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2020-11-29 19:06:54,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:06:54,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:54,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:54,068 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 19:06:54,068 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:06:54,068 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2020-11-29 19:06:54,068 INFO L796 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2020-11-29 19:06:54,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:54,069 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-29 19:06:54,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:54,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448033300] [2020-11-29 19:06:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:54,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:54,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:54,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:54,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:54,080 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-11-29 19:06:54,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:54,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365418966] [2020-11-29 19:06:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:06:54,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365418966] [2020-11-29 19:06:54,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:06:54,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:06:54,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354147294] [2020-11-29 19:06:54,116 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:06:54,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:06:54,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:06:54,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:06:54,120 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 19:06:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:06:54,147 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-11-29 19:06:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:06:54,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2020-11-29 19:06:54,149 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:06:54,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2020-11-29 19:06:54,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:06:54,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:06:54,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:06:54,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:06:54,150 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:06:54,150 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:06:54,150 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:06:54,150 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:06:54,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:06:54,150 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:06:54,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:06:54,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:06:54 BoogieIcfgContainer [2020-11-29 19:06:54,156 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:06:54,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:06:54,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:06:54,156 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:06:54,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:51" (3/4) ... [2020-11-29 19:06:54,160 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:06:54,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:06:54,162 INFO L168 Benchmark]: Toolchain (without parser) took 3156.12 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 64.1 MB in the beginning and 63.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:06:54,162 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 80.0 MB in the beginning and 80.0 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:06:54,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.81 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 77.8 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:06:54,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:06:54,164 INFO L168 Benchmark]: Boogie Preprocessor took 21.80 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.7 MB in the end (delta: 916.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:06:54,165 INFO L168 Benchmark]: RCFGBuilder took 279.66 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 67.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:06:54,165 INFO L168 Benchmark]: BuchiAutomizer took 2535.49 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.0 MB in the beginning and 63.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:06:54,166 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 121.6 MB. Free memory is still 63.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:06:54,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 80.0 MB in the beginning and 80.0 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.81 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 77.8 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.80 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.7 MB in the end (delta: 916.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 279.66 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 67.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2535.49 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.0 MB in the beginning and 63.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.79 ms. Allocated memory is still 121.6 MB. Free memory is still 63.0 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 56ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...