./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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 32bit --witnessprinter.graph.data.programhash 9c20edfd7ede05443471560aa2c7be34d4e8c171 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:58:38,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:38,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:38,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:38,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:38,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:38,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:38,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:38,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:38,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:38,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:38,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:38,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:38,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:38,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:38,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:38,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:38,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:38,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:38,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:38,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:38,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:38,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:38,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:38,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:38,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:38,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:38,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:38,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:38,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:38,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:38,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:38,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:38,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:38,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:38,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:38,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:38,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:38,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:38,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:38,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:38,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:58:38,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:38,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:38,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:38,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:38,667 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:38,667 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:58:38,667 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:58:38,667 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:58:38,668 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:58:38,668 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:58:38,669 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:58:38,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:38,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:38,670 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:58:38,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:38,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:38,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:38,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:58:38,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:58:38,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:58:38,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:38,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:38,672 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:58:38,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:38,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:58:38,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:38,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:38,673 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:58:38,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:38,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:38,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:38,674 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:58:38,675 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:58:38,676 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_ab516cbd-c773-4029-81be-dd0a3280fc1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c20edfd7ede05443471560aa2c7be34d4e8c171 [2020-11-29 23:58:39,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:39,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:39,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:39,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:39,080 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:39,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4.c [2020-11-29 23:58:39,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/data/b99fcfa17/235c50e5ce714e0fb5ade04d28be994e/FLAGb405eba21 [2020-11-29 23:58:39,859 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:39,859 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/sv-benchmarks/c/bitvector/gcd_4.c [2020-11-29 23:58:39,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/data/b99fcfa17/235c50e5ce714e0fb5ade04d28be994e/FLAGb405eba21 [2020-11-29 23:58:40,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/data/b99fcfa17/235c50e5ce714e0fb5ade04d28be994e [2020-11-29 23:58:40,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:40,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:40,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:40,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:40,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:40,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b159d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40, skipping insertion in model container [2020-11-29 23:58:40,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:40,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:40,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:40,477 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:40,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:40,536 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:40,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40 WrapperNode [2020-11-29 23:58:40,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:40,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:40,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:40,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:40,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:40,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:40,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:40,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:40,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... [2020-11-29 23:58:40,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:40,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:40,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:40,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:40,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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 23:58:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:40,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:41,026 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:41,027 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-29 23:58:41,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:41 BoogieIcfgContainer [2020-11-29 23:58:41,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:41,044 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:58:41,044 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:58:41,055 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:58:41,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:58:41,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:58:40" (1/3) ... [2020-11-29 23:58:41,058 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@690c6880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:58:41, skipping insertion in model container [2020-11-29 23:58:41,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:58:41,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:40" (2/3) ... [2020-11-29 23:58:41,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@690c6880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:58:41, skipping insertion in model container [2020-11-29 23:58:41,066 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:58:41,067 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:41" (3/3) ... [2020-11-29 23:58:41,069 INFO L373 chiAutomizerObserver]: Analyzing ICFG gcd_4.c [2020-11-29 23:58:41,137 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:58:41,137 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:58:41,137 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:58:41,137 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:41,138 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:41,138 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:58:41,138 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:41,138 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:58:41,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2020-11-29 23:58:41,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:41,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:41,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:41,184 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 23:58:41,184 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:41,184 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:58:41,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2020-11-29 23:58:41,187 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:41,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:41,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:41,188 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 23:58:41,189 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:41,198 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 24#L14true assume !(gcd_test_~a < 0); 18#L14-2true assume !(gcd_test_~b < 0); 25#L15-1true assume !(0 == gcd_test_~a); 11#L22-2true [2020-11-29 23:58:41,198 INFO L796 eck$LassoCheckResult]: Loop: 11#L22-2true assume !!(0 != gcd_test_~b); 15#L22true assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 11#L22-2true [2020-11-29 23:58:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:41,206 INFO L82 PathProgramCache]: Analyzing trace with hash 28695882, now seen corresponding path program 1 times [2020-11-29 23:58:41,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:41,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057391174] [2020-11-29 23:58:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,441 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:41,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 1 times [2020-11-29 23:58:41,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:41,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85547107] [2020-11-29 23:58:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,479 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939727, now seen corresponding path program 1 times [2020-11-29 23:58:41,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:41,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065428371] [2020-11-29 23:58:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:41,697 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 23:58:41,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065428371] [2020-11-29 23:58:41,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:41,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:41,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279128393] [2020-11-29 23:58:41,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:41,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:41,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:41,794 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-11-29 23:58:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:41,864 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-29 23:58:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:41,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 24 transitions. [2020-11-29 23:58:41,869 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:41,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 10 transitions. [2020-11-29 23:58:41,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-29 23:58:41,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 23:58:41,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2020-11-29 23:58:41,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:58:41,890 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-29 23:58:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2020-11-29 23:58:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 23:58:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 23:58:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-29 23:58:41,918 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-29 23:58:41,918 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-29 23:58:41,918 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:58:41,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2020-11-29 23:58:41,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:41,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:41,920 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:41,920 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:41,920 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:41,921 INFO L794 eck$LassoCheckResult]: Stem: 60#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 58#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 59#L14 assume !(gcd_test_~a < 0); 63#L14-2 assume !(gcd_test_~b < 0); 64#L15-1 assume !(0 == gcd_test_~a); 65#L22-2 assume !!(0 != gcd_test_~b); 61#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 62#L22-2 [2020-11-29 23:58:41,921 INFO L796 eck$LassoCheckResult]: Loop: 62#L22-2 assume !!(0 != gcd_test_~b); 66#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 62#L22-2 [2020-11-29 23:58:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:41,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939725, now seen corresponding path program 1 times [2020-11-29 23:58:41,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:41,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499488550] [2020-11-29 23:58:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,962 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 2 times [2020-11-29 23:58:41,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:41,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054685052] [2020-11-29 23:58:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:41,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:41,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:41,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1302289042, now seen corresponding path program 1 times [2020-11-29 23:58:41,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:41,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386790438] [2020-11-29 23:58:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:42,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386790438] [2020-11-29 23:58:42,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723611921] [2020-11-29 23:58:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:42,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:58:42,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:42,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:42,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-29 23:58:42,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394971220] [2020-11-29 23:58:42,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:42,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:42,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:42,242 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 6 states. [2020-11-29 23:58:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:42,298 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-11-29 23:58:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:58:42,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2020-11-29 23:58:42,302 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:42,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2020-11-29 23:58:42,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-29 23:58:42,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 23:58:42,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2020-11-29 23:58:42,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:58:42,304 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 23:58:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2020-11-29 23:58:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 23:58:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 23:58:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-29 23:58:42,306 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 23:58:42,307 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 23:58:42,307 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:58:42,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2020-11-29 23:58:42,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:42,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:42,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:42,309 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-29 23:58:42,309 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:42,309 INFO L794 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 113#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 114#L14 assume !(gcd_test_~a < 0); 118#L14-2 assume !(gcd_test_~b < 0); 119#L15-1 assume !(0 == gcd_test_~a); 120#L22-2 assume !!(0 != gcd_test_~b); 116#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 117#L22-2 assume !!(0 != gcd_test_~b); 121#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 123#L22-2 [2020-11-29 23:58:42,309 INFO L796 eck$LassoCheckResult]: Loop: 123#L22-2 assume !!(0 != gcd_test_~b); 122#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 123#L22-2 [2020-11-29 23:58:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1302289040, now seen corresponding path program 2 times [2020-11-29 23:58:42,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:42,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99906555] [2020-11-29 23:58:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,380 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:42,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 3 times [2020-11-29 23:58:42,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:42,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617095096] [2020-11-29 23:58:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,399 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:42,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1664285205, now seen corresponding path program 2 times [2020-11-29 23:58:42,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:42,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075934901] [2020-11-29 23:58:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:42,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075934901] [2020-11-29 23:58:42,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582077266] [2020-11-29 23:58:42,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:42,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:58:42,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:42,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:58:42,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:42,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:42,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-29 23:58:42,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239703679] [2020-11-29 23:58:42,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:42,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:58:42,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:42,710 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 8 states. [2020-11-29 23:58:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:42,746 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-29 23:58:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:42,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2020-11-29 23:58:42,748 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:42,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2020-11-29 23:58:42,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 23:58:42,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-29 23:58:42,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2020-11-29 23:58:42,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:58:42,750 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-29 23:58:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2020-11-29 23:58:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 23:58:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 23:58:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-29 23:58:42,752 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-29 23:58:42,752 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-29 23:58:42,752 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:58:42,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2020-11-29 23:58:42,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:42,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:42,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:42,754 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2020-11-29 23:58:42,755 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:42,755 INFO L794 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 180#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 181#L14 assume !(gcd_test_~a < 0); 185#L14-2 assume !(gcd_test_~b < 0); 186#L15-1 assume !(0 == gcd_test_~a); 187#L22-2 assume !!(0 != gcd_test_~b); 183#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 184#L22-2 assume !!(0 != gcd_test_~b); 188#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 192#L22-2 assume !!(0 != gcd_test_~b); 191#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 190#L22-2 [2020-11-29 23:58:42,755 INFO L796 eck$LassoCheckResult]: Loop: 190#L22-2 assume !!(0 != gcd_test_~b); 189#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 190#L22-2 [2020-11-29 23:58:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1664285203, now seen corresponding path program 3 times [2020-11-29 23:58:42,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:42,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285472982] [2020-11-29 23:58:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,817 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:42,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 4 times [2020-11-29 23:58:42,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:42,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129338854] [2020-11-29 23:58:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,828 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:42,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1650246872, now seen corresponding path program 3 times [2020-11-29 23:58:42,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:42,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792279949] [2020-11-29 23:58:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:42,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:42,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:43,240 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-11-29 23:58:43,379 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 23:58:43,390 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:58:43,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:58:43,391 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:58:43,391 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:58:43,391 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:58:43,391 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:43,392 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:58:43,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:58:43,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd_4.c_Iteration4_Lasso [2020-11-29 23:58:43,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:58:43,393 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:58:43,430 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 23:58:43,445 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 23:58:43,449 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 23:58:43,610 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 23:58:43,617 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 23:58:43,622 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 23:58:43,661 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 23:58:43,670 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 23:58:43,676 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 23:58:43,681 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 23:58:44,083 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:58:44,089 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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 23:58:44,106 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 23:58:44,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,123 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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 23:58:44,181 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 23:58:44,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:58:44,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:58:44,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,187 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,235 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 23:58:44,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,243 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,248 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:44,297 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 23:58:44,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,305 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,307 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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 23:58:44,388 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 23:58:44,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,398 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,398 INFO L402 nArgumentSynthesizer]: A total of 2 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 23:58:44,403 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,448 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 23:58:44,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,494 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 23:58:44,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,498 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,498 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,513 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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 23:58:44,566 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 23:58:44,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,574 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,581 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/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 23:58:44,636 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 23:58:44,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,644 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,644 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,651 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,686 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 23:58:44,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,691 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:44,729 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 23:58:44,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,734 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,744 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:44,780 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,806 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:44,839 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 23:58:44,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,850 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,851 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:58:44,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:44,928 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 23:58:44,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,933 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:58:44,933 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:44,978 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 23:58:44,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:44,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:58:44,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:44,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:58:44,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:44,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:58:44,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:58:44,982 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:45,014 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 23:58:45,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:58:45,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:58:45,017 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 23:58:45,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:58:45,049 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-29 23:58:45,049 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-29 23:58:45,099 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:58:45,272 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-29 23:58:45,272 INFO L444 ModelExtractionUtils]: 25 out of 36 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:45,288 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:45,327 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-11-29 23:58:45,328 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:58:45,328 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_gcd_test_~b) = 1*ULTIMATE.start_gcd_test_~b Supporting invariants [1*ULTIMATE.start_gcd_test_~a - 2 >= 0] [2020-11-29 23:58:45,401 INFO L297 tatePredicateManager]: 7 out of 8 supporting invariants were superfluous and have been removed [2020-11-29 23:58:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:45,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:58:45,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:45,605 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:58:45,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:45,606 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 23:58:45,610 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 1 loop predicates [2020-11-29 23:58:45,611 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2020-11-29 23:58:45,802 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2020-11-29 23:58:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:58:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:58:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-29 23:58:45,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 23:58:45,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:58:45,808 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:58:45,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:45,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:58:45,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:46,002 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:58:46,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:46,003 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 23:58:46,004 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 1 loop predicates [2020-11-29 23:58:46,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2020-11-29 23:58:46,117 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2020-11-29 23:58:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:58:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:58:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-29 23:58:46,119 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 23:58:46,119 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:58:46,120 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:58:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:46,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:58:46,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:46,304 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:58:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:46,305 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 23:58:46,306 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 1 loop predicates [2020-11-29 23:58:46,306 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2020-11-29 23:58:46,522 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 21 states and 25 transitions. Complement of second has 12 states. [2020-11-29 23:58:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2020-11-29 23:58:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:58:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2020-11-29 23:58:46,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 23:58:46,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:58:46,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 13 letters. Loop has 2 letters. [2020-11-29 23:58:46,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:58:46,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 23:58:46,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:58:46,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 25 transitions. [2020-11-29 23:58:46,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 23:58:46,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 19 states and 23 transitions. [2020-11-29 23:58:46,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 23:58:46,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 23:58:46,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2020-11-29 23:58:46,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:58:46,529 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-11-29 23:58:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2020-11-29 23:58:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-11-29 23:58:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:58:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-29 23:58:46,536 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 23:58:46,536 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 23:58:46,536 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 23:58:46,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2020-11-29 23:58:46,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:46,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:46,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:46,560 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2020-11-29 23:58:46,560 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:46,560 INFO L794 eck$LassoCheckResult]: Stem: 463#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 461#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 462#L14 assume !(gcd_test_~a < 0); 468#L14-2 assume !(gcd_test_~b < 0); 469#L15-1 assume !(0 == gcd_test_~a); 470#L22-2 assume !!(0 != gcd_test_~b); 477#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 476#L22-2 assume !!(0 != gcd_test_~b); 475#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 474#L22-2 assume !!(0 != gcd_test_~b); 473#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 472#L22-2 assume !!(0 != gcd_test_~b); 464#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 465#L22-2 [2020-11-29 23:58:46,560 INFO L796 eck$LassoCheckResult]: Loop: 465#L22-2 assume !!(0 != gcd_test_~b); 471#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 465#L22-2 [2020-11-29 23:58:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:46,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1650246870, now seen corresponding path program 4 times [2020-11-29 23:58:46,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:46,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854435273] [2020-11-29 23:58:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:46,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854435273] [2020-11-29 23:58:46,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:46,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:58:46,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384304072] [2020-11-29 23:58:46,685 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:58:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:46,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 5 times [2020-11-29 23:58:46,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:46,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187091037] [2020-11-29 23:58:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:46,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:46,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:46,704 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:46,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:46,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:46,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:46,735 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand 6 states. [2020-11-29 23:58:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:46,785 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-11-29 23:58:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:46,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2020-11-29 23:58:46,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:46,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 20 transitions. [2020-11-29 23:58:46,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 23:58:46,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 23:58:46,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 20 transitions. [2020-11-29 23:58:46,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:58:46,789 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 23:58:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 20 transitions. [2020-11-29 23:58:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-29 23:58:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:58:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-29 23:58:46,792 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 23:58:46,792 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 23:58:46,792 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 23:58:46,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2020-11-29 23:58:46,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:46,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:46,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:46,794 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:46,794 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:46,794 INFO L794 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 506#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 507#L14 assume !(gcd_test_~a < 0); 513#L14-2 assume !(gcd_test_~b < 0); 514#L15-1 assume !(0 == gcd_test_~a); 515#L22-2 assume !!(0 != gcd_test_~b); 522#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 521#L22-2 assume !!(0 != gcd_test_~b); 520#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 519#L22-2 assume !!(0 != gcd_test_~b); 518#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 517#L22-2 assume !!(0 != gcd_test_~b); 511#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 512#L22-2 assume !!(0 != gcd_test_~b); 509#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 510#L22-2 [2020-11-29 23:58:46,794 INFO L796 eck$LassoCheckResult]: Loop: 510#L22-2 assume !!(0 != gcd_test_~b); 516#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 510#L22-2 [2020-11-29 23:58:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:46,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1044312667, now seen corresponding path program 4 times [2020-11-29 23:58:46,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:46,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588535010] [2020-11-29 23:58:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:46,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588535010] [2020-11-29 23:58:46,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692730684] [2020-11-29 23:58:46,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:46,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 23:58:46,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:46,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:58:46,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:47,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:47,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-29 23:58:47,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772023633] [2020-11-29 23:58:47,136 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:58:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:47,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 6 times [2020-11-29 23:58:47,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:47,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546614875] [2020-11-29 23:58:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:47,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:47,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:47,147 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:47,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:47,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 23:58:47,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:58:47,168 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand 12 states. [2020-11-29 23:58:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:47,280 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-29 23:58:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:47,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2020-11-29 23:58:47,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:47,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 22 transitions. [2020-11-29 23:58:47,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 23:58:47,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 23:58:47,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2020-11-29 23:58:47,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:58:47,285 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-29 23:58:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2020-11-29 23:58:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-29 23:58:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 23:58:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-29 23:58:47,288 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-29 23:58:47,288 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-29 23:58:47,288 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 23:58:47,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2020-11-29 23:58:47,289 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:58:47,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:47,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:47,290 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 2, 1, 1, 1, 1, 1] [2020-11-29 23:58:47,290 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:58:47,290 INFO L794 eck$LassoCheckResult]: Stem: 605#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 603#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 604#L14 assume !(gcd_test_~a < 0); 610#L14-2 assume !(gcd_test_~b < 0); 611#L15-1 assume !(0 == gcd_test_~a); 612#L22-2 assume !!(0 != gcd_test_~b); 621#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 620#L22-2 assume !!(0 != gcd_test_~b); 619#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 618#L22-2 assume !!(0 != gcd_test_~b); 617#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 615#L22-2 assume !!(0 != gcd_test_~b); 616#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 614#L22-2 assume !!(0 != gcd_test_~b); 608#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 609#L22-2 assume !!(0 != gcd_test_~b); 606#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 607#L22-2 [2020-11-29 23:58:47,290 INFO L796 eck$LassoCheckResult]: Loop: 607#L22-2 assume !!(0 != gcd_test_~b); 613#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 607#L22-2 [2020-11-29 23:58:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:47,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1437871456, now seen corresponding path program 5 times [2020-11-29 23:58:47,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:47,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295671553] [2020-11-29 23:58:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:47,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295671553] [2020-11-29 23:58:47,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103800315] [2020-11-29 23:58:47,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab516cbd-c773-4029-81be-dd0a3280fc1f/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:47,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 23:58:47,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:47,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 23:58:47,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:47,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:47,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-11-29 23:58:47,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261955186] [2020-11-29 23:58:47,779 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:58:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:47,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 7 times [2020-11-29 23:58:47,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:47,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560675552] [2020-11-29 23:58:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:47,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:47,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:47,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:47,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:47,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 23:58:47,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:58:47,825 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. cyclomatic complexity: 4 Second operand 13 states. [2020-11-29 23:58:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:48,078 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-29 23:58:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:58:48,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 15 transitions. [2020-11-29 23:58:48,079 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:58:48,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2020-11-29 23:58:48,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:58:48,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:58:48,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:58:48,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:58:48,080 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:58:48,080 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:58:48,080 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:58:48,080 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 23:58:48,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:58:48,080 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:58:48,080 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:58:48,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:58:48 BoogieIcfgContainer [2020-11-29 23:58:48,088 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:58:48,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:48,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:48,089 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:48,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:41" (3/4) ... [2020-11-29 23:58:48,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:58:48,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:48,095 INFO L168 Benchmark]: Toolchain (without parser) took 7877.47 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 72.1 MB in the beginning and 97.2 MB in the end (delta: -25.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:48,096 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 77.6 MB. Free memory was 38.2 MB in the beginning and 38.2 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:48,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.61 ms. Allocated memory is still 102.8 MB. Free memory was 71.9 MB in the beginning and 81.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:48,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.79 ms. Allocated memory is still 102.8 MB. Free memory was 81.2 MB in the beginning and 79.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:48,098 INFO L168 Benchmark]: Boogie Preprocessor took 29.29 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:48,099 INFO L168 Benchmark]: RCFGBuilder took 409.95 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 65.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:48,100 INFO L168 Benchmark]: BuchiAutomizer took 7044.46 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 65.8 MB in the beginning and 97.2 MB in the end (delta: -31.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:48,100 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 148.9 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:48,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 ms. Allocated memory is still 77.6 MB. Free memory was 38.2 MB in the beginning and 38.2 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.61 ms. Allocated memory is still 102.8 MB. Free memory was 71.9 MB in the beginning and 81.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.79 ms. Allocated memory is still 102.8 MB. Free memory was 81.2 MB in the beginning and 79.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.29 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 409.95 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 65.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7044.46 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 65.8 MB in the beginning and 97.2 MB in the end (delta: -31.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.07 ms. Allocated memory is still 148.9 MB. Free memory is still 97.2 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 7 terminating modules (6 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function b and consists of 7 locations. 6 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.9s and 8 iterations. TraceHistogramMax:6. Analysis of lassos took 5.0s. Construction of modules took 0.4s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 6. Nontrivial modules had stage [0, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 36 SDtfs, 69 SDslu, 44 SDs, 0 SdLazy, 270 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN3 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital146 mio100 ax100 hnf95 lsp66 ukn47 mio100 lsp81 div100 bol100 ite100 ukn100 eq205 hnf90 smp100 dnf122 smp100 tf100 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 316ms VariablesStem: 6 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...