./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/gcd01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/gcd01-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 35b25a6a3a2357b1d567ba04985a13ceb918bed2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:53,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:53,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:53,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:53,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:53,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:53,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:53,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:53,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:53,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:53,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:53,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:53,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:53,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:53,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:53,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:53,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:53,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:53,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:53,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:53,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:53,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:53,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:53,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:53,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:53,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:53,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:53,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:53,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:53,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:53,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:53,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:53,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:53,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:53,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:53,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:53,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:53,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:53,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:53,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:53,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:53,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:16:53,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:53,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:53,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:53,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:53,618 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:53,618 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:16:53,618 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:16:53,618 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:16:53,618 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:16:53,619 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:16:53,619 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:16:53,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:53,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:16:53,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:53,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:53,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:16:53,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:16:53,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:16:53,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:53,620 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:16:53,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:53,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:16:53,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:53,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:53,621 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:16:53,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:53,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:53,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:53,622 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:16:53,623 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:16:53,624 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_0108ec16-7144-4741-a346-1bedfd857ba8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35b25a6a3a2357b1d567ba04985a13ceb918bed2 [2020-11-28 03:16:53,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:53,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:53,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:53,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:53,907 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:53,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/gcd01-2.c [2020-11-28 03:16:53,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/data/33ed04761/d745c16243d24f8aae6f53daf46b7111/FLAG454f13f97 [2020-11-28 03:16:54,386 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:54,387 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/sv-benchmarks/c/termination-numeric/gcd01-2.c [2020-11-28 03:16:54,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/data/33ed04761/d745c16243d24f8aae6f53daf46b7111/FLAG454f13f97 [2020-11-28 03:16:54,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/data/33ed04761/d745c16243d24f8aae6f53daf46b7111 [2020-11-28 03:16:54,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:54,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:54,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:54,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:54,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:54,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4443aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54, skipping insertion in model container [2020-11-28 03:16:54,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:54,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:54,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:55,013 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:55,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:55,053 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:55,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55 WrapperNode [2020-11-28 03:16:55,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:55,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:55,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:55,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:55,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:55,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:55,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:55,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:55,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... [2020-11-28 03:16:55,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:55,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:55,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:55,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:55,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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 [2020-11-28 03:16:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-11-28 03:16:55,217 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-11-28 03:16:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:55,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:55,492 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:55,492 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:16:55,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:55 BoogieIcfgContainer [2020-11-28 03:16:55,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:55,497 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:16:55,497 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:16:55,506 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:16:55,507 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:55,507 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:16:54" (1/3) ... [2020-11-28 03:16:55,509 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1111d410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:55, skipping insertion in model container [2020-11-28 03:16:55,509 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:55,509 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:55" (2/3) ... [2020-11-28 03:16:55,509 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1111d410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:55, skipping insertion in model container [2020-11-28 03:16:55,510 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:55,510 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:55" (3/3) ... [2020-11-28 03:16:55,511 INFO L373 chiAutomizerObserver]: Analyzing ICFG gcd01-2.c [2020-11-28 03:16:55,559 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:16:55,559 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:16:55,559 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:16:55,559 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:55,559 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:55,560 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:16:55,560 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:55,560 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:16:55,582 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2020-11-28 03:16:55,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:16:55,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:55,605 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:55,612 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:16:55,612 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 03:16:55,613 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:16:55,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2020-11-28 03:16:55,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:16:55,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:55,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:55,623 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:16:55,623 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 03:16:55,630 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(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 15#L32true assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 24#L36true assume !(main_~n~0 <= 0); 8#L39true call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 3#gcdENTRYtrue [2020-11-28 03:16:55,631 INFO L796 eck$LassoCheckResult]: Loop: 3#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 13#L18true assume !(~y1 <= 0 || ~y2 <= 0); 10#L21true assume !(~y1 == ~y2); 4#L24true assume ~y1 > ~y2; 7#L25true call #t~ret7 := gcd(~y1 - ~y2, ~y2);< 3#gcdENTRYtrue [2020-11-28 03:16:55,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,636 INFO L82 PathProgramCache]: Analyzing trace with hash 45873353, now seen corresponding path program 1 times [2020-11-28 03:16:55,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123666939] [2020-11-28 03:16:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:55,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:55,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:55,776 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:55,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,778 INFO L82 PathProgramCache]: Analyzing trace with hash 28756389, now seen corresponding path program 1 times [2020-11-28 03:16:55,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014103082] [2020-11-28 03:16:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:55,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:55,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:55,796 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,798 INFO L82 PathProgramCache]: Analyzing trace with hash 50269661, now seen corresponding path program 1 times [2020-11-28 03:16:55,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238717065] [2020-11-28 03:16:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:55,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:55,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:55,853 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:56,039 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:56,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:56,040 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:56,040 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:56,040 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:56,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:56,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:56,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:56,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration1_Loop [2020-11-28 03:16:56,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:56,042 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:56,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,175 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:56,176 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:56,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:56,186 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:56,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:56,195 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:56,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:56,237 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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) [2020-11-28 03:16:56,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:56,285 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:56,452 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:56,454 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:56,454 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:56,454 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:56,454 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:56,454 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:56,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:56,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:56,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:56,455 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration1_Loop [2020-11-28 03:16:56,455 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:56,455 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:56,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:56,571 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:56,576 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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) [2020-11-28 03:16:56,587 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 [2020-11-28 03:16:56,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:56,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:56,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:56,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:56,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:56,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:56,593 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 [2020-11-28 03:16:56,597 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:56,638 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 [2020-11-28 03:16:56,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:56,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:56,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:56,642 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:56,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:56,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:56,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:56,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:56,692 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 [2020-11-28 03:16:56,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:56,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:56,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:56,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:56,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:56,707 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:56,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:16:56,717 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:56,723 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:56,723 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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) [2020-11-28 03:16:56,754 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:56,754 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:56,755 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:56,755 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:56,792 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:56,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:56,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:56,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:16:56,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:56,984 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 03:16:56,985 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states. Second operand 5 states. [2020-11-28 03:16:57,227 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states.. Second operand 5 states. Result 95 states and 131 transitions. Complement of second has 30 states. [2020-11-28 03:16:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-28 03:16:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:16:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2020-11-28 03:16:57,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2020-11-28 03:16:57,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:57,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2020-11-28 03:16:57,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:57,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-28 03:16:57,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:57,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 131 transitions. [2020-11-28 03:16:57,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:16:57,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 36 states and 41 transitions. [2020-11-28 03:16:57,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-28 03:16:57,252 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-11-28 03:16:57,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2020-11-28 03:16:57,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:57,253 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-28 03:16:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2020-11-28 03:16:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2020-11-28 03:16:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:16:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-28 03:16:57,279 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 03:16:57,282 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 03:16:57,282 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:16:57,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2020-11-28 03:16:57,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:16:57,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:57,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:57,287 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:16:57,287 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 03:16:57,287 INFO L794 eck$LassoCheckResult]: Stem: 217#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(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 205#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 206#L32 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 218#L36 assume !(main_~n~0 <= 0); 210#L39 call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 222#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 207#L18 [2020-11-28 03:16:57,287 INFO L796 eck$LassoCheckResult]: Loop: 207#L18 assume !(~y1 <= 0 || ~y2 <= 0); 209#L21 assume !(~y1 == ~y2); 219#L24 assume !(~y1 > ~y2); 208#L27 call #t~ret8 := gcd(~y1, ~y2 - ~y1);< 215#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 207#L18 [2020-11-28 03:16:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1422073943, now seen corresponding path program 1 times [2020-11-28 03:16:57,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:57,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452840036] [2020-11-28 03:16:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:57,314 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:57,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:57,329 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash 32576474, now seen corresponding path program 1 times [2020-11-28 03:16:57,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:57,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404431323] [2020-11-28 03:16:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:57,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:57,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:57,344 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:57,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1558362436, now seen corresponding path program 1 times [2020-11-28 03:16:57,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:57,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149452636] [2020-11-28 03:16:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:57,379 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:57,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:57,410 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:57,538 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:57,538 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:57,538 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:57,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:57,539 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:57,539 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:57,539 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:57,539 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:57,539 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration2_Loop [2020-11-28 03:16:57,539 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:57,539 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:57,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:57,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:57,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:57,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:57,716 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:57,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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 [2020-11-28 03:16:57,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:57,722 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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 [2020-11-28 03:16:57,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:57,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:16:59,570 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:59,573 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:59,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:59,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:59,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:59,573 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:59,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:59,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:59,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:59,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration2_Loop [2020-11-28 03:16:59,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:59,574 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:59,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:59,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:59,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:59,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:59,766 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:59,766 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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) [2020-11-28 03:16:59,778 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 [2020-11-28 03:16:59,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:59,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:59,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:59,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:59,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:59,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:59,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:16:59,788 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:59,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:59,795 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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) [2020-11-28 03:16:59,802 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:59,802 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:59,802 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:59,802 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:59,836 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:59,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:59,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:59,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:16:59,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:59,961 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:16:59,961 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-28 03:17:00,006 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 54 states and 61 transitions. Complement of second has 11 states. [2020-11-28 03:17:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:17:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:17:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-28 03:17:00,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2020-11-28 03:17:00,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:00,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-28 03:17:00,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:00,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2020-11-28 03:17:00,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:00,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2020-11-28 03:17:00,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:17:00,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2020-11-28 03:17:00,013 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 03:17:00,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:17:00,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2020-11-28 03:17:00,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:17:00,014 INFO L691 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-28 03:17:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2020-11-28 03:17:00,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-11-28 03:17:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:17:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-28 03:17:00,018 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-28 03:17:00,018 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-28 03:17:00,018 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:17:00,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2020-11-28 03:17:00,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:17:00,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:00,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:00,020 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:00,020 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 03:17:00,020 INFO L794 eck$LassoCheckResult]: Stem: 353#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(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 339#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 340#L32 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 354#L36 assume !(main_~n~0 <= 0); 342#L39 call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 341#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 343#L18 assume !(~y1 <= 0 || ~y2 <= 0); 358#L21 assume !(~y1 == ~y2); 356#L24 assume ~y1 > ~y2; 347#L25 call #t~ret7 := gcd(~y1 - ~y2, ~y2);< 357#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 346#L18 [2020-11-28 03:17:00,020 INFO L796 eck$LassoCheckResult]: Loop: 346#L18 assume !(~y1 <= 0 || ~y2 <= 0); 349#L21 assume !(~y1 == ~y2); 355#L24 assume !(~y1 > ~y2); 348#L27 call #t~ret8 := gcd(~y1, ~y2 - ~y1);< 359#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 346#L18 [2020-11-28 03:17:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1558359491, now seen corresponding path program 2 times [2020-11-28 03:17:00,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:00,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256912294] [2020-11-28 03:17:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:00,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:00,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:00,077 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash 32576474, now seen corresponding path program 2 times [2020-11-28 03:17:00,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:00,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089819632] [2020-11-28 03:17:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:00,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:00,093 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:00,095 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:00,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash -474042536, now seen corresponding path program 1 times [2020-11-28 03:17:00,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:00,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423669921] [2020-11-28 03:17:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:00,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:00,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:00,148 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:00,267 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:17:00,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:17:00,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:17:00,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:17:00,267 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:17:00,267 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:00,267 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:17:00,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:17:00,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration3_Loop [2020-11-28 03:17:00,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:17:00,268 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:17:00,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:00,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:00,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:00,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:00,465 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:17:00,465 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:17:00,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:17:00,480 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:00,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:17:00,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret7=0} Honda state: {gcd_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:00,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:17:00,510 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:00,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:17:00,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:17:01,054 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:17:01,056 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:17:01,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:17:01,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:17:01,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:17:01,056 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:17:01,057 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:01,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:17:01,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:17:01,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration3_Loop [2020-11-28 03:17:01,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:17:01,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:17:01,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:01,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:01,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:01,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:01,189 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:17:01,190 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:01,200 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 [2020-11-28 03:17:01,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:17:01,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:17:01,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:17:01,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:17:01,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:17:01,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:17:01,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:17:01,204 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:01,226 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 [2020-11-28 03:17:01,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:17:01,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:17:01,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:17:01,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:17:01,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:17:01,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:17:01,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:17:01,234 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:17:01,236 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:17:01,236 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0108ec16-7144-4741-a346-1bedfd857ba8/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 [2020-11-28 03:17:01,238 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:17:01,238 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:17:01,239 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:17:01,239 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2020-11-28 03:17:01,258 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:17:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:17:01,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:17:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:01,373 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:17:01,373 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-11-28 03:17:01,441 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 46 states and 51 transitions. Complement of second has 11 states. [2020-11-28 03:17:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:17:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:17:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-28 03:17:01,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-28 03:17:01,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:01,444 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:17:01,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:17:01,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:17:01,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:01,608 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:17:01,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-11-28 03:17:01,629 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 46 states and 51 transitions. Complement of second has 11 states. [2020-11-28 03:17:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:17:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:17:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-28 03:17:01,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-28 03:17:01,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:01,631 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:17:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:17:01,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:17:01,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:01,744 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:17:01,744 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-11-28 03:17:01,778 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 75 states and 86 transitions. Complement of second has 12 states. [2020-11-28 03:17:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:17:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:17:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2020-11-28 03:17:01,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-28 03:17:01,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:01,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2020-11-28 03:17:01,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:01,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2020-11-28 03:17:01,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:01,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2020-11-28 03:17:01,798 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:17:01,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2020-11-28 03:17:01,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:17:01,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:17:01,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:17:01,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:17:01,801 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:17:01,801 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:17:01,801 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:17:01,801 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:17:01,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:17:01,801 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:17:01,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:17:01,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:17:01 BoogieIcfgContainer [2020-11-28 03:17:01,807 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:17:01,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:01,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:01,808 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:01,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:55" (3/4) ... [2020-11-28 03:17:01,811 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:17:01,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:01,812 INFO L168 Benchmark]: Toolchain (without parser) took 7003.54 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 44.8 MB in the beginning and 64.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:01,813 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:01,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.12 ms. Allocated memory is still 81.8 MB. Free memory was 44.6 MB in the beginning and 59.4 MB in the end (delta: -14.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:01,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.33 ms. Allocated memory is still 81.8 MB. Free memory was 59.4 MB in the beginning and 58.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:01,815 INFO L168 Benchmark]: Boogie Preprocessor took 38.86 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 57.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:01,815 INFO L168 Benchmark]: RCFGBuilder took 359.44 ms. Allocated memory is still 81.8 MB. Free memory was 57.1 MB in the beginning and 44.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:01,816 INFO L168 Benchmark]: BuchiAutomizer took 6310.35 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 44.6 MB in the beginning and 65.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:01,816 INFO L168 Benchmark]: Witness Printer took 3.33 ms. Allocated memory is still 119.5 MB. Free memory is still 64.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:01,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.12 ms. Allocated memory is still 81.8 MB. Free memory was 44.6 MB in the beginning and 59.4 MB in the end (delta: -14.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.33 ms. Allocated memory is still 81.8 MB. Free memory was 59.4 MB in the beginning and 58.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.86 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 57.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 359.44 ms. Allocated memory is still 81.8 MB. Free memory was 57.1 MB in the beginning and 44.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6310.35 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 44.6 MB in the beginning and 65.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.33 ms. Allocated memory is still 119.5 MB. Free memory is still 64.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(y1) and consists of 7 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function y2 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 52 SDtfs, 77 SDslu, 9 SDs, 0 SdLazy, 124 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf85 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf91 smp89 dnf100 smp100 tf106 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...