./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.13.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_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.13.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:35:35,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:35:35,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:35:35,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:35:35,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:35:35,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:35:35,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:35:35,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:35:35,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:35:35,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:35:35,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:35:35,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:35:35,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:35:35,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:35:35,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:35:35,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:35:35,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:35:35,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:35:35,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:35:35,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:35:35,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:35:35,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:35:35,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:35:35,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:35:35,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:35:35,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:35:35,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:35:35,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:35:35,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:35:35,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:35:35,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:35:35,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:35:35,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:35:35,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:35:35,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:35:35,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:35:35,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:35:35,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:35:35,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:35:35,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:35:35,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:35:35,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:35:35,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:35:35,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:35:35,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:35:35,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:35:35,372 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:35:35,373 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:35:35,373 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:35:35,373 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:35:35,373 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:35:35,373 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:35:35,374 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:35:35,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:35:35,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:35:35,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:35:35,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:35:35,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:35:35,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:35:35,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:35:35,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:35:35,377 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:35:35,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:35:35,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:35:35,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:35:35,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:35:35,378 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:35:35,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:35:35,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:35:35,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:35:35,379 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:35:35,381 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:35:35,381 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_4d7da979-1580-4433-bceb-02be74623563/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 [2020-11-29 23:35:35,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:35:35,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:35:35,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:35:35,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:35:35,703 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:35:35,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.13.c [2020-11-29 23:35:35,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/data/eff76d8b9/b391b2e37d2b45d48283ceabf1503dac/FLAG35325efbb [2020-11-29 23:35:36,308 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:35:36,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/sv-benchmarks/c/termination-restricted-15/b.13.c [2020-11-29 23:35:36,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/data/eff76d8b9/b391b2e37d2b45d48283ceabf1503dac/FLAG35325efbb [2020-11-29 23:35:36,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/data/eff76d8b9/b391b2e37d2b45d48283ceabf1503dac [2020-11-29 23:35:36,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:35:36,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:35:36,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:35:36,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:35:36,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:35:36,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc379a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36, skipping insertion in model container [2020-11-29 23:35:36,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:35:36,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:35:36,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:35:36,903 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:35:36,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:35:36,941 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:35:36,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36 WrapperNode [2020-11-29 23:35:36,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:35:36,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:35:36,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:35:36,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:35:36,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:35:36,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:35:36,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:35:36,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:35:36,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... [2020-11-29 23:35:36,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:35:36,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:35:36,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:35:36,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:35:36,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 23:35:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:35:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:35:37,230 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:35:37,230 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 23:35:37,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:35:37 BoogieIcfgContainer [2020-11-29 23:35:37,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:35:37,233 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:35:37,233 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:35:37,237 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:35:37,238 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:35:37,238 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:35:36" (1/3) ... [2020-11-29 23:35:37,240 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8d4e33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:35:37, skipping insertion in model container [2020-11-29 23:35:37,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:35:37,240 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:35:36" (2/3) ... [2020-11-29 23:35:37,241 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8d4e33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:35:37, skipping insertion in model container [2020-11-29 23:35:37,241 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:35:37,241 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:35:37" (3/3) ... [2020-11-29 23:35:37,243 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.13.c [2020-11-29 23:35:37,325 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:35:37,325 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:35:37,325 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:35:37,325 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:35:37,325 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:35:37,330 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:35:37,330 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:35:37,330 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:35:37,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 23:35:37,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:35:37,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:35:37,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:35:37,366 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:35:37,366 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:35:37,366 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:35:37,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 23:35:37,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:35:37,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:35:37,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:35:37,368 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:35:37,368 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:35:37,375 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 10#L16-2true [2020-11-29 23:35:37,376 INFO L796 eck$LassoCheckResult]: Loop: 10#L16-2true assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 8#L13true assume main_~x~0 > main_~z~0;main_~x~0 := main_~x~0 - 1; 10#L16-2true [2020-11-29 23:35:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:37,381 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 23:35:37,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:37,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770068505] [2020-11-29 23:35:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:37,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:37,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:37,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:35:37,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:37,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-29 23:35:37,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:37,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262182969] [2020-11-29 23:35:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:37,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:37,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:37,513 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:35:37,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:37,516 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 23:35:37,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:37,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641271116] [2020-11-29 23:35:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:37,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:37,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:37,546 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:35:37,685 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2020-11-29 23:35:37,722 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:35:37,723 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:35:37,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:35:37,724 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:35:37,724 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:35:37,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:37,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:35:37,724 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:35:37,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2020-11-29 23:35:37,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:35:37,725 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:35:37,746 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 23:35:37,757 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 23:35:37,764 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 23:35:37,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:35:37,867 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 23:35:37,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:35:37,877 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 23:35:37,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:35:37,889 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_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:37,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:35:37,931 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:37,940 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:35:37,940 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_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:37,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:35:37,982 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_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:38,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:35:38,026 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:38,260 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:35:38,261 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:35:38,261 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:35:38,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:35:38,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:35:38,262 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:35:38,262 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:38,262 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:35:38,262 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:35:38,262 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2020-11-29 23:35:38,262 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:35:38,263 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:35:38,264 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 23:35:38,274 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 23:35:38,288 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 23:35:38,374 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:35:38,378 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 23:35:38,384 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:38,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:35:38,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:35:38,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:35:38,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:35:38,392 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:35:38,392 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:35:38,398 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 23:35:38,428 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 23:35:38,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:35:38,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:35:38,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:35:38,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:35:38,433 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:35:38,433 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:35:38,441 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:38,482 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 23:35:38,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:35:38,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:35:38,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:35:38,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:35:38,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:35:38,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:35:38,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:38,490 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:35:38,502 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 23:35:38,502 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_4d7da979-1580-4433-bceb-02be74623563/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 23:35:38,514 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:35:38,514 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:35:38,514 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:35:38,515 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:38,542 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:35:38,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:35:38,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:35:38,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:35:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:35:38,658 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:35:38,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:35:38,660 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 23:35:38,676 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 23:35:38,677 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 23:35:38,731 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2020-11-29 23:35:38,733 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 23:35:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:35:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-11-29 23:35:38,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 23:35:38,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:35:38,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 23:35:38,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:35:38,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 23:35:38,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:35:38,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2020-11-29 23:35:38,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:35:38,741 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2020-11-29 23:35:38,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 23:35:38,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 23:35:38,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-11-29 23:35:38,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:35:38,742 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-11-29 23:35:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-11-29 23:35:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-29 23:35:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 23:35:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-11-29 23:35:38,766 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-11-29 23:35:38,766 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-11-29 23:35:38,767 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:35:38,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-11-29 23:35:38,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:35:38,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:35:38,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:35:38,768 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:35:38,768 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:35:38,768 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 64#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2020-11-29 23:35:38,768 INFO L796 eck$LassoCheckResult]: Loop: 69#L13 assume !(main_~x~0 > main_~z~0); 65#L16 assume main_~y~0 > main_~z~0;main_~y~0 := main_~y~0 - 1; 66#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2020-11-29 23:35:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:38,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 23:35:38,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:38,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882914955] [2020-11-29 23:35:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:38,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:38,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:38,781 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:35:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:38,781 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-11-29 23:35:38,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:38,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935237618] [2020-11-29 23:35:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:38,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:38,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:38,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:35:38,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-11-29 23:35:38,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:38,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889566627] [2020-11-29 23:35:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:38,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:38,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:38,825 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:35:38,902 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:35:38,902 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:35:38,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:35:38,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:35:38,902 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:35:38,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:38,903 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:35:38,903 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:35:38,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2020-11-29 23:35:38,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:35:38,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:35:38,905 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 23:35:38,920 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 23:35:38,925 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 23:35:39,004 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:35:39,004 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:39,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:35:39,010 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:39,014 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:35:39,014 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_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:39,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:35:39,055 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:39,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:35:39,060 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_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:39,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:35:39,102 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:35:39,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:35:39,147 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:39,564 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:35:39,566 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:35:39,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:35:39,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:35:39,567 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:35:39,567 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:35:39,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:35:39,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:35:39,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:35:39,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2020-11-29 23:35:39,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:35:39,567 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:35:39,568 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 23:35:39,586 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 23:35:39,604 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 23:35:39,684 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:35:39,684 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 [2020-11-29 23:35:39,689 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 23:35:39,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:35:39,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:35:39,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:35:39,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:35:39,697 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:35:39,697 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:35:39,701 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 23:35:39,729 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 23:35:39,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:35:39,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:35:39,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:35:39,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:35:39,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:35:39,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:35:39,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:35:39,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:35:39,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:35:39,742 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d7da979-1580-4433-bceb-02be74623563/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 [2020-11-29 23:35:39,769 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:35:39,770 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:35:39,770 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:35:39,770 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-11-29 23:35:39,789 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:35:39,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:35:39,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:35:39,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:35:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:35:39,838 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:35:39,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:35:40,009 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 23:35:40,010 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 23:35:40,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-29 23:35:40,058 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2020-11-29 23:35:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 23:35:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 23:35:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-29 23:35:40,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-29 23:35:40,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:35:40,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 23:35:40,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:35:40,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-29 23:35:40,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:35:40,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2020-11-29 23:35:40,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:35:40,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2020-11-29 23:35:40,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 23:35:40,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 23:35:40,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2020-11-29 23:35:40,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:35:40,066 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-11-29 23:35:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2020-11-29 23:35:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-11-29 23:35:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 23:35:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2020-11-29 23:35:40,074 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-29 23:35:40,074 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-29 23:35:40,074 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:35:40,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2020-11-29 23:35:40,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:35:40,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:35:40,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:35:40,080 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 23:35:40,080 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:35:40,080 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 148#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 163#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2020-11-29 23:35:40,080 INFO L796 eck$LassoCheckResult]: Loop: 149#L16 assume !(main_~y~0 > main_~z~0); 150#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 157#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2020-11-29 23:35:40,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:40,083 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-29 23:35:40,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:40,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941753631] [2020-11-29 23:35:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:40,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:35:40,098 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:35:40,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:35:40,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:35:40,100 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-11-29 23:35:40,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:35:40,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458841659] [2020-11-29 23:35:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:35:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:35:40,155 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 23:35:40,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458841659] [2020-11-29 23:35:40,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:35:40,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:35:40,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318164843] [2020-11-29 23:35:40,158 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:35:40,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:35:40,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:35:40,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:35:40,163 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 23:35:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:35:40,207 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-11-29 23:35:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:35:40,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2020-11-29 23:35:40,209 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:35:40,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2020-11-29 23:35:40,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:35:40,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:35:40,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:35:40,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:35:40,209 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:35:40,209 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:35:40,209 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:35:40,210 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:35:40,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:35:40,210 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:35:40,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:35:40,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:35:40 BoogieIcfgContainer [2020-11-29 23:35:40,217 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:35:40,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:35:40,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:35:40,218 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:35:40,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:35:37" (3/4) ... [2020-11-29 23:35:40,222 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:35:40,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:35:40,225 INFO L168 Benchmark]: Toolchain (without parser) took 3529.37 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.4 MB in the beginning and 75.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:40,227 INFO L168 Benchmark]: CDTParser took 5.62 ms. Allocated memory is still 77.6 MB. Free memory was 48.3 MB in the beginning and 59.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:40,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.47 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 74.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:40,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.11 ms. Allocated memory is still 94.4 MB. Free memory was 74.6 MB in the beginning and 73.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:35:40,235 INFO L168 Benchmark]: Boogie Preprocessor took 18.99 ms. Allocated memory is still 94.4 MB. Free memory was 73.3 MB in the beginning and 72.3 MB in the end (delta: 964.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:35:40,235 INFO L168 Benchmark]: RCFGBuilder took 235.09 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 64.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:40,236 INFO L168 Benchmark]: BuchiAutomizer took 2983.70 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.7 MB in the beginning and 75.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:35:40,239 INFO L168 Benchmark]: Witness Printer took 5.03 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 75.7 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:35:40,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 5.62 ms. Allocated memory is still 77.6 MB. Free memory was 48.3 MB in the beginning and 59.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.47 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 74.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.11 ms. Allocated memory is still 94.4 MB. Free memory was 74.6 MB in the beginning and 73.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.99 ms. Allocated memory is still 94.4 MB. Free memory was 73.3 MB in the beginning and 72.3 MB in the end (delta: 964.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 235.09 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 64.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2983.70 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.7 MB in the beginning and 75.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.03 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 75.7 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...