./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:19:34,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:19:34,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:19:34,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:19:34,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:19:34,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:19:34,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:19:34,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:19:34,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:19:34,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:19:34,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:19:34,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:19:34,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:19:34,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:19:34,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:19:34,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:19:34,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:19:34,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:19:34,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:19:34,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:19:34,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:19:34,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:19:34,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:19:34,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:19:34,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:19:34,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:19:34,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:19:34,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:19:34,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:19:34,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:19:34,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:19:34,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:19:34,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:19:34,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:19:34,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:19:34,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:19:34,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:19:34,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:19:34,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:19:34,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:19:34,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:19:34,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 15:19:34,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:19:34,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:19:34,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:19:34,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:19:34,963 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:19:34,964 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 15:19:34,964 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 15:19:34,964 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 15:19:34,964 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 15:19:34,964 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 15:19:34,965 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 15:19:34,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:19:34,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:19:34,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:19:34,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:19:34,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 15:19:34,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 15:19:34,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 15:19:34,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:19:34,967 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 15:19:34,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:19:34,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 15:19:34,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:19:34,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:19:34,968 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 15:19:34,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:19:34,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:19:34,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:19:34,969 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 15:19:34,972 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 15:19:34,972 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_167af574-6857-4180-9163-8a3326ccdebf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 [2020-12-01 15:19:35,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:19:35,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:19:35,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:19:35,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:19:35,304 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:19:35,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2020-12-01 15:19:35,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/data/e57d37db0/8f3290e008db4c5f86a660498994c56d/FLAGd06788dda [2020-12-01 15:19:36,055 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:19:36,057 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2020-12-01 15:19:36,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/data/e57d37db0/8f3290e008db4c5f86a660498994c56d/FLAGd06788dda [2020-12-01 15:19:36,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/data/e57d37db0/8f3290e008db4c5f86a660498994c56d [2020-12-01 15:19:36,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:19:36,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:19:36,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:19:36,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:19:36,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:19:36,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2b6c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36, skipping insertion in model container [2020-12-01 15:19:36,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:19:36,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:19:36,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:19:36,716 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:19:36,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:19:36,762 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:19:36,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36 WrapperNode [2020-12-01 15:19:36,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:19:36,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:19:36,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:19:36,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:19:36,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:19:36,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:19:36,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:19:36,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:19:36,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... [2020-12-01 15:19:36,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:19:36,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:19:36,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:19:36,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:19:36,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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 [2020-12-01 15:19:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:19:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:19:37,057 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:19:37,058 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 15:19:37,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:19:37 BoogieIcfgContainer [2020-12-01 15:19:37,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:19:37,061 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 15:19:37,061 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 15:19:37,065 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 15:19:37,066 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:19:37,067 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 03:19:36" (1/3) ... [2020-12-01 15:19:37,069 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c9813f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:19:37, skipping insertion in model container [2020-12-01 15:19:37,069 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:19:37,069 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:19:36" (2/3) ... [2020-12-01 15:19:37,070 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c9813f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:19:37, skipping insertion in model container [2020-12-01 15:19:37,070 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:19:37,070 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:19:37" (3/3) ... [2020-12-01 15:19:37,072 INFO L389 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1.c [2020-12-01 15:19:37,134 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 15:19:37,135 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 15:19:37,135 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 15:19:37,135 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:19:37,135 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:19:37,135 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 15:19:37,136 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:19:37,136 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 15:19:37,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-12-01 15:19:37,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 15:19:37,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:19:37,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:19:37,179 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 15:19:37,179 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:19:37,179 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 15:19:37,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-12-01 15:19:37,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 15:19:37,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:19:37,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:19:37,181 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 15:19:37,181 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:19:37,189 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L19-2true [2020-12-01 15:19:37,190 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L19true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 6#L19-2true [2020-12-01 15:19:37,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-12-01 15:19:37,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:37,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812056348] [2020-12-01 15:19:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:37,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:37,298 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:37,317 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:37,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-12-01 15:19:37,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:37,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207309818] [2020-12-01 15:19:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:37,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:37,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:37,339 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:37,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-12-01 15:19:37,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:37,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899340822] [2020-12-01 15:19:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:37,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:37,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:37,359 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:37,445 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:37,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:37,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:37,447 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:37,447 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:19:37,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:37,447 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:37,447 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:37,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2020-12-01 15:19:37,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:37,448 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:37,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:37,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:37,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:37,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:37,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:37,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:37,736 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:37,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:37,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:19:37,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:37,818 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_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:37,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:37,869 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 [2020-12-01 15:19:37,896 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:37,896 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_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:37,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:37,943 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_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:38,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:19:38,017 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 [2020-12-01 15:19:38,079 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:19:38,082 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:38,082 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:38,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:38,083 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:38,083 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:19:38,083 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:38,083 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:38,083 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:38,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2020-12-01 15:19:38,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:38,084 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:38,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,304 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:38,310 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:38,324 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 [2020-12-01 15:19:38,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:38,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:38,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:38,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:38,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:19:38,350 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:38,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:38,404 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 [2020-12-01 15:19:38,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:38,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:38,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:38,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:38,412 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:19:38,412 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:19:38,429 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:38,479 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 [2020-12-01 15:19:38,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:38,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:19:38,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:38,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:38,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:38,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:19:38,484 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 [2020-12-01 15:19:38,493 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:19:38,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-12-01 15:19:38,509 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_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:38,518 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:19:38,519 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:19:38,519 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:19:38,519 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 [2020-12-01 15:19:38,558 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:19:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:38,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:19:38,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:38,663 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:19:38,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:19:38,718 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-12-01 15:19:38,720 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-12-01 15:19:38,783 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 8 states. [2020-12-01 15:19:38,784 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 [2020-12-01 15:19:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:19:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-12-01 15:19:38,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-12-01 15:19:38,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:38,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-12-01 15:19:38,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:38,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-12-01 15:19:38,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:38,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-12-01 15:19:38,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 15:19:38,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-12-01 15:19:38,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-12-01 15:19:38,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-12-01 15:19:38,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-12-01 15:19:38,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 15:19:38,803 INFO L692 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-12-01 15:19:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-12-01 15:19:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-01 15:19:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-01 15:19:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-12-01 15:19:38,836 INFO L715 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-12-01 15:19:38,836 INFO L595 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-12-01 15:19:38,836 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 15:19:38,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-12-01 15:19:38,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 15:19:38,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:19:38,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:19:38,838 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-12-01 15:19:38,838 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:19:38,839 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 73#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 69#L19-2 [2020-12-01 15:19:38,839 INFO L796 eck$LassoCheckResult]: Loop: 69#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 70#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 69#L19-2 [2020-12-01 15:19:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-12-01 15:19:38,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:38,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077523890] [2020-12-01 15:19:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:38,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:38,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:38,856 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:38,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-12-01 15:19:38,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:38,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573110044] [2020-12-01 15:19:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:38,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:38,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:38,869 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:38,870 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-12-01 15:19:38,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:38,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70213011] [2020-12-01 15:19:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:38,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:38,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:38,890 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:38,920 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:38,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:38,921 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:38,921 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:38,925 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:19:38,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:38,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:38,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:38,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2020-12-01 15:19:38,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:38,926 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:38,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:38,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,054 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:39,054 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:39,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:39,063 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 [2020-12-01 15:19:39,080 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:39,080 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_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:39,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:39,119 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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 [2020-12-01 15:19:39,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:19:39,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:19:39,208 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:19:39,210 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:39,210 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:39,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:39,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:39,211 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:19:39,211 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:39,211 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:39,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:39,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2020-12-01 15:19:39,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:39,211 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:39,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,345 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:39,345 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:39,355 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 [2020-12-01 15:19:39,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:39,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:39,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:39,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:39,370 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:19:39,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:39,393 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:39,442 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 [2020-12-01 15:19:39,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:39,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:19:39,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:39,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:39,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:39,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:19:39,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:19:39,463 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:39,474 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-12-01 15:19:39,474 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_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:39,482 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:19:39,482 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:19:39,483 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:19:39,483 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:39,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:19:39,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:39,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:19:39,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:39,559 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:19:39,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:19:39,587 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-12-01 15:19:39,588 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-12-01 15:19:39,614 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2020-12-01 15:19:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:19:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:19:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-12-01 15:19:39,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-12-01 15:19:39,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:39,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-12-01 15:19:39,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:39,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-12-01 15:19:39,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:39,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-12-01 15:19:39,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 15:19:39,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-12-01 15:19:39,625 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-12-01 15:19:39,625 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-12-01 15:19:39,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-12-01 15:19:39,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 15:19:39,626 INFO L692 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-12-01 15:19:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-12-01 15:19:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-01 15:19:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-01 15:19:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-12-01 15:19:39,630 INFO L715 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-12-01 15:19:39,630 INFO L595 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-12-01 15:19:39,630 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-12-01 15:19:39,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2020-12-01 15:19:39,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-12-01 15:19:39,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:19:39,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:19:39,633 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-12-01 15:19:39,633 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:19:39,633 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 122#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 127#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 128#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 123#L19-2 [2020-12-01 15:19:39,633 INFO L796 eck$LassoCheckResult]: Loop: 123#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 124#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 123#L19-2 [2020-12-01 15:19:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:39,638 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2020-12-01 15:19:39,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:39,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108599937] [2020-12-01 15:19:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:39,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:39,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:39,679 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:39,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-12-01 15:19:39,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:39,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758915589] [2020-12-01 15:19:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:39,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:39,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:39,701 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:39,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:39,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2020-12-01 15:19:39,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:39,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493401265] [2020-12-01 15:19:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:39,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:39,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:39,720 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:39,747 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:39,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:39,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:39,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:39,747 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:19:39,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:39,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:39,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:39,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2020-12-01 15:19:39,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:39,748 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:39,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:39,869 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:39,869 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:39,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:39,874 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:39,887 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:39,887 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/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) [2020-12-01 15:19:39,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:39,931 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:39,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:39,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:39,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:39,994 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:40,018 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:40,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:40,082 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:40,092 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:40,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:40,119 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:19:40,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:19:40,180 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:19:40,182 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:40,182 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:40,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:40,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:40,182 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:19:40,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:40,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:40,182 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2020-12-01 15:19:40,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:40,183 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:40,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:40,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:40,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:40,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:40,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:40,310 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:40,310 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:40,318 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 [2020-12-01 15:19:40,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:40,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:19:40,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:40,321 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-12-01 15:19:40,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:40,323 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-12-01 15:19:40,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:40,379 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 [2020-12-01 15:19:40,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:40,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:40,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:40,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:40,387 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:19:40,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,414 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:40,459 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 [2020-12-01 15:19:40,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:40,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:19:40,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:40,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:40,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:40,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:19:40,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,483 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:40,523 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 [2020-12-01 15:19:40,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:40,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:40,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:40,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:40,529 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:19:40,529 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,556 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,584 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 [2020-12-01 15:19:40,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:40,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:19:40,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:40,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:40,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:40,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:19:40,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:19:40,629 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:19:40,635 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-12-01 15:19:40,635 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:40,638 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:19:40,638 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:19:40,638 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:19:40,638 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-12-01 15:19:40,658 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:19:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:40,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:19:40,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:40,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:19:40,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:19:40,744 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-12-01 15:19:40,744 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-12-01 15:19:40,767 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-12-01 15:19:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:19:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:19:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-12-01 15:19:40,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-12-01 15:19:40,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:40,770 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-12-01 15:19:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:40,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:19:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:40,835 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:19:40,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:19:40,862 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-12-01 15:19:40,863 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-12-01 15:19:40,884 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-12-01 15:19:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:19:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:19:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-12-01 15:19:40,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-12-01 15:19:40,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:40,886 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-12-01 15:19:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:40,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:19:40,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:40,945 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:19:40,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:19:40,966 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-12-01 15:19:40,967 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-12-01 15:19:40,994 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2020-12-01 15:19:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:19:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:19:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-12-01 15:19:40,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-12-01 15:19:40,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:40,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2020-12-01 15:19:40,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:40,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2020-12-01 15:19:40,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:40,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2020-12-01 15:19:41,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-12-01 15:19:41,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2020-12-01 15:19:41,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-12-01 15:19:41,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-12-01 15:19:41,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-12-01 15:19:41,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 15:19:41,004 INFO L692 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-12-01 15:19:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-12-01 15:19:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2020-12-01 15:19:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-12-01 15:19:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-12-01 15:19:41,006 INFO L715 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-12-01 15:19:41,006 INFO L595 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-12-01 15:19:41,006 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-12-01 15:19:41,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-12-01 15:19:41,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-12-01 15:19:41,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:19:41,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:19:41,007 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 15:19:41,010 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:19:41,010 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L19-2 [2020-12-01 15:19:41,011 INFO L796 eck$LassoCheckResult]: Loop: 269#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 271#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 269#L19-2 [2020-12-01 15:19:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:41,011 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-12-01 15:19:41,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:41,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114538960] [2020-12-01 15:19:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:41,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:41,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:41,039 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:41,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2020-12-01 15:19:41,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:41,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240128777] [2020-12-01 15:19:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:41,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:41,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:41,051 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:41,053 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2020-12-01 15:19:41,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:19:41,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804182077] [2020-12-01 15:19:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:19:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:41,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:19:41,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:19:41,066 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:19:41,107 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:41,107 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:41,107 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:41,107 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:41,108 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:19:41,108 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,108 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:41,108 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:41,108 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2020-12-01 15:19:41,108 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:41,108 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:41,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:41,278 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:41,291 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,306 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:41,307 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:41,352 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:19:41,366 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:19:41,414 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:19:41,480 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,534 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:19:41,536 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:19:41,536 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:19:41,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:19:41,537 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:19:41,537 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:19:41,537 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,537 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:19:41,537 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:19:41,537 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2020-12-01 15:19:41,537 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:19:41,537 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:19:41,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:19:41,737 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:19:41,737 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,746 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 [2020-12-01 15:19:41,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:41,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:19:41,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:41,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:41,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:41,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:19:41,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,766 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,803 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 [2020-12-01 15:19:41,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:41,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:41,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:41,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:41,810 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:19:41,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,875 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 [2020-12-01 15:19:41,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:19:41,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:19:41,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:19:41,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:19:41,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:19:41,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:19:41,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,897 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:19:41,902 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-12-01 15:19:41,902 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_167af574-6857-4180-9163-8a3326ccdebf/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:19:41,906 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:19:41,906 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:19:41,906 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:19:41,906 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:19:41,928 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:19:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:19:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:41,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:19:41,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:19:41,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:19:41,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:19:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:19:41,996 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-12-01 15:19:41,996 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-12-01 15:19:42,010 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2020-12-01 15:19:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:19:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:19:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-12-01 15:19:42,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2020-12-01 15:19:42,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:42,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2020-12-01 15:19:42,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:42,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2020-12-01 15:19:42,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:19:42,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-12-01 15:19:42,014 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:19:42,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-12-01 15:19:42,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-12-01 15:19:42,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-12-01 15:19:42,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-12-01 15:19:42,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:19:42,015 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:19:42,015 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:19:42,015 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:19:42,015 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-12-01 15:19:42,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:19:42,016 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:19:42,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-12-01 15:19:42,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 03:19:42 BoogieIcfgContainer [2020-12-01 15:19:42,023 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 15:19:42,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:19:42,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:19:42,024 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:19:42,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:19:37" (3/4) ... [2020-12-01 15:19:42,028 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:19:42,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:19:42,031 INFO L168 Benchmark]: Toolchain (without parser) took 5599.95 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 52.4 MB in the beginning and 82.7 MB in the end (delta: -30.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:19:42,031 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:19:42,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.00 ms. Allocated memory is still 83.9 MB. Free memory was 52.2 MB in the beginning and 62.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:19:42,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.02 ms. Allocated memory is still 83.9 MB. Free memory was 62.3 MB in the beginning and 61.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:19:42,034 INFO L168 Benchmark]: Boogie Preprocessor took 20.67 ms. Allocated memory is still 83.9 MB. Free memory was 61.0 MB in the beginning and 60.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:19:42,034 INFO L168 Benchmark]: RCFGBuilder took 240.11 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 51.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:19:42,035 INFO L168 Benchmark]: BuchiAutomizer took 4961.81 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 51.9 MB in the beginning and 82.7 MB in the end (delta: -30.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:19:42,036 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 125.8 MB. Free memory is still 82.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:19:42,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.00 ms. Allocated memory is still 83.9 MB. Free memory was 52.2 MB in the beginning and 62.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.02 ms. Allocated memory is still 83.9 MB. Free memory was 62.3 MB in the beginning and 61.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.67 ms. Allocated memory is still 83.9 MB. Free memory was 61.0 MB in the beginning and 60.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 240.11 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 51.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4961.81 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 51.9 MB in the beginning and 82.7 MB in the end (delta: -30.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.27 ms. Allocated memory is still 125.8 MB. Free memory is still 82.7 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 7 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 58ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...