./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.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_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/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 222b9e0025989dbea1cdc61cba66ae29f96b0141 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:29:46,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:29:46,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:29:46,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:29:46,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:29:46,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:29:46,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:29:46,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:29:46,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:29:46,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:29:46,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:29:46,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:29:46,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:29:46,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:29:46,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:29:46,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:29:46,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:29:46,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:29:46,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:29:46,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:29:46,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:29:46,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:29:46,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:29:46,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:29:46,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:29:46,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:29:46,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:29:46,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:29:46,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:29:46,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:29:46,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:29:46,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:29:46,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:29:46,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:29:46,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:29:46,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:29:46,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:29:46,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:29:46,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:29:46,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:29:46,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:29:46,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:29:46,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:29:46,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:29:46,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:29:46,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:29:46,243 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:29:46,243 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:29:46,243 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:29:46,243 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:29:46,243 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:29:46,243 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:29:46,244 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:29:46,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:29:46,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:29:46,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:29:46,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:29:46,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:29:46,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:29:46,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:29:46,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:29:46,246 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:29:46,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:29:46,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:29:46,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:29:46,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:29:46,247 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:29:46,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:29:46,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:29:46,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:29:46,248 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:29:46,249 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:29:46,249 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_6cf79714-5098-4e28-aaac-4723457c12d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 222b9e0025989dbea1cdc61cba66ae29f96b0141 [2020-11-30 00:29:46,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:29:46,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:29:46,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:29:46,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:29:46,589 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:29:46,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2020-11-30 00:29:46,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/data/527a02cf0/c5afeb51064548f9a31d77e8de426342/FLAG7f87624b2 [2020-11-30 00:29:47,210 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:29:47,210 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2020-11-30 00:29:47,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/data/527a02cf0/c5afeb51064548f9a31d77e8de426342/FLAG7f87624b2 [2020-11-30 00:29:47,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/data/527a02cf0/c5afeb51064548f9a31d77e8de426342 [2020-11-30 00:29:47,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:29:47,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:29:47,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:29:47,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:29:47,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:29:47,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271a7723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47, skipping insertion in model container [2020-11-30 00:29:47,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:29:47,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:29:47,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:29:47,793 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:29:47,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:29:47,825 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:29:47,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47 WrapperNode [2020-11-30 00:29:47,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:29:47,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:29:47,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:29:47,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:29:47,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:29:47,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:29:47,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:29:47,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:29:47,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... [2020-11-30 00:29:47,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:29:47,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:29:47,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:29:47,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:29:47,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:29:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:29:48,111 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:29:48,111 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:29:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:48 BoogieIcfgContainer [2020-11-30 00:29:48,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:29:48,114 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:29:48,114 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:29:48,117 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:29:48,118 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:29:48,118 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:29:47" (1/3) ... [2020-11-30 00:29:48,120 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ac1cc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:29:48, skipping insertion in model container [2020-11-30 00:29:48,120 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:29:48,120 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:47" (2/3) ... [2020-11-30 00:29:48,121 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ac1cc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:29:48, skipping insertion in model container [2020-11-30 00:29:48,121 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:29:48,121 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:48" (3/3) ... [2020-11-30 00:29:48,122 INFO L373 chiAutomizerObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2020-11-30 00:29:48,170 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:29:48,171 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:29:48,171 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:29:48,171 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:29:48,171 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:29:48,171 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:29:48,171 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:29:48,172 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:29:48,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:29:48,216 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-30 00:29:48,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:29:48,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:29:48,238 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:29:48,238 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:29:48,238 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:29:48,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:29:48,240 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-30 00:29:48,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:29:48,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:29:48,240 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:29:48,240 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:29:48,247 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 10#L20true assume main_~y~0 > 0 && main_~x~0 > 0; 6#L21-2true [2020-11-30 00:29:48,260 INFO L796 eck$LassoCheckResult]: Loop: 6#L21-2true assume !!(main_~i~0 > 0);main_~i~0 := main_~i~0 - 1;main_~z~0 := 1 + main_~z~0; 6#L21-2true [2020-11-30 00:29:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:48,266 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-30 00:29:48,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:48,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770701356] [2020-11-30 00:29:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:48,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:48,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:48,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:48,402 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2020-11-30 00:29:48,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:48,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372791101] [2020-11-30 00:29:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:48,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:48,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:48,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:48,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:48,444 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-11-30 00:29:48,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:48,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22766287] [2020-11-30 00:29:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:48,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:48,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:48,482 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:48,583 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:29:48,586 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:29:48,586 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:29:48,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:29:48,587 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:29:48,587 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:48,587 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:29:48,587 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:29:48,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2020-11-30 00:29:48,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:29:48,589 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:29:48,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:48,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:48,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:48,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:48,736 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:29:48,737 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:48,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:48,757 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:48,769 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:48,769 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_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:48,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:48,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:29:48,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:48,823 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_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:48,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:48,865 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:48,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:29:48,912 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:48,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:29:48,959 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:29:48,959 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:29:48,959 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:29:48,959 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:29:48,959 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:29:48,959 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:48,960 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:29:48,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:29:48,960 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2020-11-30 00:29:48,960 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:29:48,960 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:29:48,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:48,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:48,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:48,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,119 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:29:49,123 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:49,134 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:29:49,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:49,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:49,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:49,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:49,145 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:29:49,145 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 [2020-11-30 00:29:49,151 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:49,198 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:49,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:49,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:49,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:49,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:49,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:49,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:49,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:29:49,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:29:49,213 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:29:49,213 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_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:49,237 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:29:49,237 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:29:49,237 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:29:49,238 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:49,265 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:29:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:49,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:29:49,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:29:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:49,339 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:29:49,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:29:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:49,353 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-30 00:29:49,355 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2020-11-30 00:29:49,409 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 28 states and 36 transitions. Complement of second has 6 states. [2020-11-30 00:29:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:29:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:29:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-11-30 00:29:49,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-30 00:29:49,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:49,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-30 00:29:49,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:49,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-30 00:29:49,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:49,429 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2020-11-30 00:29:49,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:29:49,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 6 states and 8 transitions. [2020-11-30 00:29:49,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-30 00:29:49,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-30 00:29:49,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2020-11-30 00:29:49,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:29:49,436 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-30 00:29:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2020-11-30 00:29:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-11-30 00:29:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:29:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-11-30 00:29:49,460 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-30 00:29:49,460 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-30 00:29:49,460 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:29:49,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-11-30 00:29:49,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:29:49,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:29:49,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:29:49,461 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:29:49,461 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:29:49,462 INFO L794 eck$LassoCheckResult]: Stem: 69#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 70#L20 assume main_~y~0 > 0 && main_~x~0 > 0; 72#L21-2 assume !(main_~i~0 > 0); 71#L25-1 [2020-11-30 00:29:49,462 INFO L796 eck$LassoCheckResult]: Loop: 71#L25-1 assume !!(main_~i~0 < main_~y~0);main_~i~0 := 1 + main_~i~0;main_~z~0 := main_~z~0 - 1; 71#L25-1 [2020-11-30 00:29:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:49,463 INFO L82 PathProgramCache]: Analyzing trace with hash 30887, now seen corresponding path program 1 times [2020-11-30 00:29:49,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:49,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69176054] [2020-11-30 00:29:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:49,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69176054] [2020-11-30 00:29:49,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:49,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:29:49,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559114273] [2020-11-30 00:29:49,513 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:29:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:49,514 INFO L82 PathProgramCache]: Analyzing trace with hash 55, now seen corresponding path program 1 times [2020-11-30 00:29:49,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:49,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488371465] [2020-11-30 00:29:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:49,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:49,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:49,525 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:49,551 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:29:49,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:29:49,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:29:49,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:29:49,552 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:29:49,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:49,552 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:29:49,552 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:29:49,552 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2020-11-30 00:29:49,552 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:29:49,552 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:29:49,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,650 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:29:49,650 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/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) [2020-11-30 00:29:49,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:49,660 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 [2020-11-30 00:29:49,666 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:49,666 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_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:49,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:49,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:29:49,700 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:49,700 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:49,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:49,722 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:49,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:29:49,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:29:49,897 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:29:49,900 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:29:49,900 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:29:49,900 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:29:49,900 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:29:49,901 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:29:49,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:49,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:29:49,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:29:49,901 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2020-11-30 00:29:49,901 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:29:49,901 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:29:49,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:49,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:50,051 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:29:50,052 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:29:50,056 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:29:50,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:50,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:50,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:50,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:50,064 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:29:50,064 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:29:50,070 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:50,101 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:29:50,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:50,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:50,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:50,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:50,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:29:50,106 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:29:50,112 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:50,137 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:29:50,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:50,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:50,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:50,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:50,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:50,140 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:50,140 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:29:50,143 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:29:50,148 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:29:50,148 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cf79714-5098-4e28-aaac-4723457c12d7/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:50,156 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:29:50,157 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:29:50,157 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:29:50,157 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-30 00:29:50,192 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:29:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:50,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:29:50,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:29:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:50,242 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:29:50,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:29:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:50,243 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-30 00:29:50,243 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-30 00:29:50,250 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 6 states and 8 transitions. Complement of second has 2 states. [2020-11-30 00:29:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-30 00:29:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:29:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 5 transitions. [2020-11-30 00:29:50,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-30 00:29:50,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:50,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-30 00:29:50,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:50,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-30 00:29:50,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:50,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 8 transitions. [2020-11-30 00:29:50,253 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:29:50,254 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2020-11-30 00:29:50,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:29:50,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:29:50,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:29:50,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:29:50,254 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:29:50,254 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:29:50,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:50,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:29:50,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:29:50,259 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-11-30 00:29:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:50,261 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-30 00:29:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:29:50,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-30 00:29:50,262 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:29:50,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:29:50,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:29:50,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:29:50,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:29:50,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:29:50,262 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:29:50,263 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:29:50,263 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:29:50,263 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:29:50,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:29:50,263 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:29:50,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:29:50,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:29:50 BoogieIcfgContainer [2020-11-30 00:29:50,269 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:29:50,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:29:50,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:29:50,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:29:50,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:48" (3/4) ... [2020-11-30 00:29:50,273 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:29:50,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:29:50,275 INFO L168 Benchmark]: Toolchain (without parser) took 2687.04 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 92.3 MB in the beginning and 111.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:50,276 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:29:50,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.26 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 98.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:50,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 121.6 MB. Free memory was 98.8 MB in the beginning and 97.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:29:50,278 INFO L168 Benchmark]: Boogie Preprocessor took 17.68 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 96.5 MB in the end (delta: 884.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:29:50,278 INFO L168 Benchmark]: RCFGBuilder took 238.57 ms. Allocated memory is still 121.6 MB. Free memory was 96.5 MB in the beginning and 88.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:50,279 INFO L168 Benchmark]: BuchiAutomizer took 2154.82 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 87.7 MB in the beginning and 111.9 MB in the end (delta: -24.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:50,279 INFO L168 Benchmark]: Witness Printer took 3.86 ms. Allocated memory is still 155.2 MB. Free memory is still 111.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:29:50,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 39.7 MB in the beginning and 39.7 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.26 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 98.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 121.6 MB. Free memory was 98.8 MB in the beginning and 97.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.68 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 96.5 MB in the end (delta: 884.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 238.57 ms. Allocated memory is still 121.6 MB. Free memory was 96.5 MB in the beginning and 88.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2154.82 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 87.7 MB in the beginning and 111.9 MB in the end (delta: -24.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.86 ms. Allocated memory is still 155.2 MB. Free memory is still 111.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i + y and consists of 2 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 13 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...