./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-cousot9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-cousot9.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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 0a8f096dedbbe798ef2fe808d4231fc7a503c17f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:13:41,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:13:41,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:13:41,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:13:41,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:13:41,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:13:41,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:13:41,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:13:41,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:13:41,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:13:41,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:13:41,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:13:41,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:13:41,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:13:41,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:13:41,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:13:41,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:13:41,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:13:41,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:13:41,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:13:41,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:13:41,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:13:41,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:13:41,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:13:41,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:13:41,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:13:41,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:13:41,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:13:41,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:13:41,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:13:41,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:13:41,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:13:41,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:13:41,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:13:42,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:13:42,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:13:42,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:13:42,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:13:42,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:13:42,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:13:42,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:13:42,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 21:13:42,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:13:42,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:13:42,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:13:42,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:13:42,036 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:13:42,037 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:13:42,037 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:13:42,037 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:13:42,037 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:13:42,038 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:13:42,038 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:13:42,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:13:42,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:13:42,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:13:42,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:13:42,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:13:42,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:13:42,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:13:42,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:13:42,042 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:13:42,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:13:42,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:13:42,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:13:42,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:13:42,044 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:13:42,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:13:42,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:13:42,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:13:42,045 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:13:42,048 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:13:42,049 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a8f096dedbbe798ef2fe808d4231fc7a503c17f [2020-11-29 21:13:42,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:13:42,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:13:42,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:13:42,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:13:42,484 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:13:42,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-cousot9.c [2020-11-29 21:13:42,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/data/dca41299e/103d583cbac345e5a735824c7f655644/FLAGdd1329906 [2020-11-29 21:13:43,199 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:13:43,201 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-cousot9.c [2020-11-29 21:13:43,209 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/data/dca41299e/103d583cbac345e5a735824c7f655644/FLAGdd1329906 [2020-11-29 21:13:43,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/data/dca41299e/103d583cbac345e5a735824c7f655644 [2020-11-29 21:13:43,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:13:43,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:13:43,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:13:43,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:13:43,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:13:43,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692ef6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43, skipping insertion in model container [2020-11-29 21:13:43,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:13:43,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:13:43,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:13:43,822 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:13:43,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:13:43,860 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:13:43,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43 WrapperNode [2020-11-29 21:13:43,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:13:43,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:13:43,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:13:43,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:13:43,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:13:43,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:13:43,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:13:43,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:13:43,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... [2020-11-29 21:13:43,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:13:43,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:13:43,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:13:43,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:13:43,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:13:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:13:44,198 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:13:44,199 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 21:13:44,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:13:44 BoogieIcfgContainer [2020-11-29 21:13:44,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:13:44,203 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:13:44,203 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:13:44,208 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:13:44,209 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:13:44,209 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:13:43" (1/3) ... [2020-11-29 21:13:44,211 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d624262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:13:44, skipping insertion in model container [2020-11-29 21:13:44,211 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:13:44,211 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:13:43" (2/3) ... [2020-11-29 21:13:44,212 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d624262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:13:44, skipping insertion in model container [2020-11-29 21:13:44,212 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:13:44,212 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:13:44" (3/3) ... [2020-11-29 21:13:44,214 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-cousot9.c [2020-11-29 21:13:44,288 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:13:44,289 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:13:44,289 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:13:44,289 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:13:44,289 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:13:44,289 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:13:44,289 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:13:44,290 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:13:44,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 21:13:44,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:13:44,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:13:44,326 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:13:44,333 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 21:13:44,333 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:13:44,333 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:13:44,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 21:13:44,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:13:44,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:13:44,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:13:44,335 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 21:13:44,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:13:44,344 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~j~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~N~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~i~0 := main_~N~0; 6#L19-2true [2020-11-29 21:13:44,344 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~i~0 > 0); 8#L19true assume main_~j~0 > 0;main_~j~0 := main_~j~0 - 1; 6#L19-2true [2020-11-29 21:13:44,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:44,352 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 21:13:44,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:44,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574469302] [2020-11-29 21:13:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:44,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:44,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:44,503 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-29 21:13:44,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:44,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409943736] [2020-11-29 21:13:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:44,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:44,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:44,545 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:44,549 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 21:13:44,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:44,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886646084] [2020-11-29 21:13:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:44,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:44,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:44,594 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:44,746 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 21:13:44,788 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:44,789 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:44,789 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:44,789 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:44,789 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:13:44,790 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:44,790 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:44,790 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:44,790 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration1_Loop [2020-11-29 21:13:44,791 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:44,791 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:44,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:44,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:44,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:44,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,037 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:45,038 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:13:45,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:45,052 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,063 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:13:45,064 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:45,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:13:45,111 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:13:45,111 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:45,144 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:13:45,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:13:45,209 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:13:45,211 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:45,211 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:45,211 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:45,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:45,211 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:13:45,212 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,212 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:45,212 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:45,212 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration1_Loop [2020-11-29 21:13:45,212 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:45,212 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:45,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,429 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:45,434 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:13:45,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:13:45,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:13:45,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:13:45,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:13:45,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:13:45,499 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:13:45,499 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 [2020-11-29 21:13:45,507 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:13:45,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:13:45,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:13:45,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:13:45,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:13:45,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:13:45,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:13:45,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:13:45,555 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:13:45,561 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:13:45,562 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:13:45,571 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:13:45,572 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:13:45,572 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-11-29 21:13:45,597 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:13:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:45,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:13:45,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:45,670 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:13:45,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:45,687 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 21:13:45,688 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-29 21:13:45,732 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2020-11-29 21:13:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 21:13:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:13:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 21:13:45,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 21:13:45,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:45,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 21:13:45,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:45,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 21:13:45,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:45,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-11-29 21:13:45,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:13:45,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 21:13:45,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 21:13:45,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 21:13:45,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 21:13:45,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:13:45,747 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 21:13:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 21:13:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-29 21:13:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 21:13:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-29 21:13:45,771 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 21:13:45,771 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 21:13:45,771 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:13:45,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-29 21:13:45,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:13:45,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:13:45,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:13:45,773 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 21:13:45,773 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:13:45,773 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~j~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~N~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~i~0 := main_~N~0; 64#L19-2 assume !!(main_~i~0 > 0); 69#L19 assume !(main_~j~0 > 0);main_~j~0 := main_~N~0;main_~i~0 := main_~i~0 - 1; 65#L19-2 [2020-11-29 21:13:45,773 INFO L796 eck$LassoCheckResult]: Loop: 65#L19-2 assume !!(main_~i~0 > 0); 66#L19 assume main_~j~0 > 0;main_~j~0 := main_~j~0 - 1; 65#L19-2 [2020-11-29 21:13:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-29 21:13:45,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:45,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742289809] [2020-11-29 21:13:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:45,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:45,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:45,786 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:45,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:45,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-11-29 21:13:45,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:45,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102716557] [2020-11-29 21:13:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:45,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:45,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:45,796 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:45,797 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-11-29 21:13:45,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:45,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53963130] [2020-11-29 21:13:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:45,810 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:45,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:45,819 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:45,843 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:45,843 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:45,843 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:45,843 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:45,843 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:13:45,843 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,844 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:45,844 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:45,844 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration2_Loop [2020-11-29 21:13:45,844 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:45,844 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:45,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:45,979 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:45,979 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:13:45,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:45,995 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:45,999 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:13:45,999 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:46,028 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:13:46,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:13:46,098 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:13:46,100 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:46,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:46,100 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:46,100 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:46,100 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:13:46,100 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,100 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:46,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:46,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration2_Loop [2020-11-29 21:13:46,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:46,101 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:46,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,185 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:46,185 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,213 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:13:46,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:13:46,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:13:46,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:13:46,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:13:46,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:13:46,221 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:13:46,222 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:13:46,224 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:13:46,226 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:13:46,226 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,229 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:13:46,229 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:13:46,229 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:13:46,229 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-11-29 21:13:46,251 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:13:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:46,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:13:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:46,304 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:13:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:46,305 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 21:13:46,305 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 21:13:46,335 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. [2020-11-29 21:13:46,336 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 [2020-11-29 21:13:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:13:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 21:13:46,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 21:13:46,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:46,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 21:13:46,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:46,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-29 21:13:46,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:46,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-11-29 21:13:46,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:13:46,340 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-11-29 21:13:46,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 21:13:46,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 21:13:46,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-11-29 21:13:46,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:13:46,341 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-29 21:13:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-11-29 21:13:46,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 21:13:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 21:13:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-11-29 21:13:46,347 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-29 21:13:46,347 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-11-29 21:13:46,348 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:13:46,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2020-11-29 21:13:46,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:13:46,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:13:46,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:13:46,349 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-11-29 21:13:46,349 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:13:46,350 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~j~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~N~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~i~0 := main_~N~0; 117#L19-2 assume !!(main_~i~0 > 0); 122#L19 assume !(main_~j~0 > 0);main_~j~0 := main_~N~0;main_~i~0 := main_~i~0 - 1; 123#L19-2 assume !!(main_~i~0 > 0); 124#L19 assume !(main_~j~0 > 0);main_~j~0 := main_~N~0;main_~i~0 := main_~i~0 - 1; 118#L19-2 [2020-11-29 21:13:46,350 INFO L796 eck$LassoCheckResult]: Loop: 118#L19-2 assume !!(main_~i~0 > 0); 119#L19 assume main_~j~0 > 0;main_~j~0 := main_~j~0 - 1; 118#L19-2 [2020-11-29 21:13:46,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:46,350 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2020-11-29 21:13:46,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:46,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641898050] [2020-11-29 21:13:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:46,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641898050] [2020-11-29 21:13:46,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156349356] [2020-11-29 21:13:46,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:13:46,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:13:46,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:13:46,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:13:46,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:46,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:13:46,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-11-29 21:13:46,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861611151] [2020-11-29 21:13:46,593 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 21:13:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:46,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-11-29 21:13:46,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:46,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226137541] [2020-11-29 21:13:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:46,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:46,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:46,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:46,635 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:46,635 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:46,635 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:46,635 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:46,635 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:13:46,636 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,636 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:46,636 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:46,636 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration3_Loop [2020-11-29 21:13:46,636 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:46,636 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:46,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,730 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:46,730 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:46,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:13:46,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:13:46,751 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:13:46,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:46,796 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) [2020-11-29 21:13:46,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:13:46,847 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 [2020-11-29 21:13:46,878 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:13:46,880 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:46,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:46,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:46,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:46,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:13:46,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:46,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:46,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration3_Loop [2020-11-29 21:13:46,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:46,880 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:46,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:46,954 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:46,954 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) [2020-11-29 21:13:46,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:13:46,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:13:46,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:13:46,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:13:46,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:13:46,964 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:13:46,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:46,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) [2020-11-29 21:13:47,013 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:13:47,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:13:47,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:13:47,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:13:47,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:13:47,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:13:47,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:13:47,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:47,023 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:13:47,026 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:13:47,026 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) [2020-11-29 21:13:47,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:13:47,036 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:13:47,036 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:13:47,036 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:47,076 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:13:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,123 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:47,125 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 21:13:47,125 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 21:13:47,137 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. [2020-11-29 21:13:47,138 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 [2020-11-29 21:13:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:13:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 21:13:47,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 21:13:47,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,139 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:13:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,173 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:47,175 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 21:13:47,175 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 21:13:47,184 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. [2020-11-29 21:13:47,184 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 [2020-11-29 21:13:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:13:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 21:13:47,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 21:13:47,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,185 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:13:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,215 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:47,216 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 1 loop predicates [2020-11-29 21:13:47,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 21:13:47,263 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. [2020-11-29 21:13:47,264 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 [2020-11-29 21:13:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:13:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 21:13:47,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 21:13:47,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 21:13:47,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 21:13:47,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2020-11-29 21:13:47,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 21:13:47,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2020-11-29 21:13:47,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 21:13:47,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 21:13:47,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-11-29 21:13:47,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:13:47,269 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-29 21:13:47,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-11-29 21:13:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2020-11-29 21:13:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 21:13:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-11-29 21:13:47,279 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-29 21:13:47,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:13:47,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:13:47,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:13:47,284 INFO L87 Difference]: Start difference. First operand 5 states and 7 transitions. Second operand 6 states. [2020-11-29 21:13:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:13:47,357 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2020-11-29 21:13:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:13:47,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2020-11-29 21:13:47,358 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 21:13:47,359 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 13 transitions. [2020-11-29 21:13:47,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 21:13:47,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 21:13:47,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-11-29 21:13:47,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:13:47,360 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-29 21:13:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-11-29 21:13:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 6. [2020-11-29 21:13:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 21:13:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-11-29 21:13:47,361 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 21:13:47,361 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 21:13:47,361 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 21:13:47,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-11-29 21:13:47,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 21:13:47,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:13:47,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:13:47,362 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 21:13:47,362 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-11-29 21:13:47,362 INFO L794 eck$LassoCheckResult]: Stem: 296#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~j~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~N~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~i~0 := main_~N~0; 297#L19-2 assume !!(main_~i~0 > 0); 301#L19 [2020-11-29 21:13:47,363 INFO L796 eck$LassoCheckResult]: Loop: 301#L19 assume !(main_~j~0 > 0);main_~j~0 := main_~N~0;main_~i~0 := main_~i~0 - 1; 298#L19-2 assume !!(main_~i~0 > 0); 299#L19 assume main_~j~0 > 0;main_~j~0 := main_~j~0 - 1; 300#L19-2 assume !!(main_~i~0 > 0); 301#L19 [2020-11-29 21:13:47,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:47,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 21:13:47,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:47,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268500434] [2020-11-29 21:13:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:47,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:47,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:47,372 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:47,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2020-11-29 21:13:47,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:47,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885349779] [2020-11-29 21:13:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:47,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:47,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:47,383 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 2 times [2020-11-29 21:13:47,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:13:47,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770356907] [2020-11-29 21:13:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:13:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:47,391 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:13:47,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:13:47,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:13:47,430 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:47,430 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:47,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:47,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:47,431 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:13:47,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:47,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:47,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:47,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration4_Loop [2020-11-29 21:13:47,431 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:47,431 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:47,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:47,539 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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 [2020-11-29 21:13:47,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:13:47,548 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) [2020-11-29 21:13:47,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:13:47,609 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:47,699 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:13:47,702 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:13:47,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:13:47,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:13:47,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:13:47,702 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:13:47,702 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:47,702 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:13:47,702 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:13:47,702 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-cousot9.c_Iteration4_Loop [2020-11-29 21:13:47,702 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:13:47,702 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:13:47,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:13:47,790 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:13:47,790 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) [2020-11-29 21:13:47,799 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:47,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:13:47,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:13:47,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:13:47,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:13:47,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:13:47,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:13:47,804 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:13:47,809 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:13:47,812 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:13:47,812 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_d25d4ff1-8f90-44b0-9dbc-e757e7817f32/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) [2020-11-29 21:13:47,820 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:13:47,821 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:13:47,821 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:13:47,821 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:13:47,847 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:13:47,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:13:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:13:47,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:13:47,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:13:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:13:47,911 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:13:47,911 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-11-29 21:13:47,937 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 18 states and 24 transitions. Complement of second has 6 states. [2020-11-29 21:13:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:13:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:13:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-29 21:13:47,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 21:13:47,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 21:13:47,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2020-11-29 21:13:47,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:13:47,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-11-29 21:13:47,941 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:13:47,941 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2020-11-29 21:13:47,941 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 21:13:47,941 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 21:13:47,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 21:13:47,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:13:47,941 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:13:47,941 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:13:47,941 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:13:47,941 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 21:13:47,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:13:47,942 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:13:47,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 21:13:47,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:13:47 BoogieIcfgContainer [2020-11-29 21:13:47,949 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:13:47,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:13:47,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:13:47,950 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:13:47,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:13:44" (3/4) ... [2020-11-29 21:13:47,954 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:13:47,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:13:47,956 INFO L168 Benchmark]: Toolchain (without parser) took 4373.25 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 56.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:13:47,957 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 84.6 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:13:47,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.75 ms. Allocated memory is still 111.1 MB. Free memory was 76.6 MB in the beginning and 88.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:13:47,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.75 ms. Allocated memory is still 111.1 MB. Free memory was 88.9 MB in the beginning and 87.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:13:47,959 INFO L168 Benchmark]: Boogie Preprocessor took 18.00 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.8 MB in the end (delta: 595.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:13:47,963 INFO L168 Benchmark]: RCFGBuilder took 282.10 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 78.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:13:47,964 INFO L168 Benchmark]: BuchiAutomizer took 3746.43 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 56.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:13:47,967 INFO L168 Benchmark]: Witness Printer took 4.56 ms. Allocated memory is still 134.2 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:13:47,974 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 111.1 MB. Free memory was 84.6 MB in the beginning and 84.6 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.75 ms. Allocated memory is still 111.1 MB. Free memory was 76.6 MB in the beginning and 88.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.75 ms. Allocated memory is still 111.1 MB. Free memory was 88.9 MB in the beginning and 87.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.00 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.8 MB in the end (delta: 595.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 282.10 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 78.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3746.43 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 56.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.56 ms. Allocated memory is still 134.2 MB. Free memory is still 56.1 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 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function j and consists of 3 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 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: 2/2 HoareTripleCheckerStatistics: 31 SDtfs, 32 SDslu, 10 SDs, 0 SdLazy, 39 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax182 hnf99 lsp39 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 70ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...