./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c20edfd7ede05443471560aa2c7be34d4e8c171 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:31:19,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:31:19,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:31:19,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:31:19,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:31:19,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:31:19,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:31:19,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:31:19,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:31:19,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:31:19,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:31:19,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:31:19,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:31:19,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:31:19,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:31:19,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:31:19,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:31:19,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:31:19,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:31:19,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:31:19,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:31:19,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:31:19,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:31:19,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:31:19,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:31:19,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:31:19,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:31:19,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:31:19,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:31:19,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:31:19,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:31:19,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:31:19,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:31:19,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:31:19,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:31:19,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:31:19,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:31:19,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:31:19,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:31:19,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:31:19,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:31:19,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-11 00:31:19,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:31:19,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:31:19,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:31:19,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:31:19,655 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:31:19,655 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:31:19,656 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:31:19,656 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:31:19,656 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:31:19,656 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:31:19,658 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:31:19,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:31:19,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:31:19,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:31:19,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:31:19,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:31:19,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:31:19,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:31:19,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:31:19,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:31:19,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:31:19,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:31:19,662 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:31:19,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:31:19,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:31:19,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:31:19,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:31:19,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:31:19,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:31:19,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:31:19,667 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:31:19,667 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_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c20edfd7ede05443471560aa2c7be34d4e8c171 [2021-10-11 00:31:20,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:31:20,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:31:20,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:31:20,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:31:20,051 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:31:20,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/bitvector/gcd_4.c [2021-10-11 00:31:20,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/data/a21753bef/976b5cb62ddd492ca5a53210b08044e4/FLAGb6a9fb47d [2021-10-11 00:31:20,769 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:31:20,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/sv-benchmarks/c/bitvector/gcd_4.c [2021-10-11 00:31:20,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/data/a21753bef/976b5cb62ddd492ca5a53210b08044e4/FLAGb6a9fb47d [2021-10-11 00:31:21,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/data/a21753bef/976b5cb62ddd492ca5a53210b08044e4 [2021-10-11 00:31:21,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:31:21,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:31:21,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:21,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:31:21,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:31:21,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bacce1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21, skipping insertion in model container [2021-10-11 00:31:21,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:31:21,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:31:21,373 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-11 00:31:21,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:21,394 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:31:21,419 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-11 00:31:21,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:21,439 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:31:21,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21 WrapperNode [2021-10-11 00:31:21,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:21,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:21,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:31:21,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:31:21,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:21,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:31:21,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:31:21,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:31:21,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... [2021-10-11 00:31:21,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:31:21,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:31:21,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:31:21,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:31:21,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:31:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:31:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:31:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:31:21,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:31:21,847 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 00:31:21,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:21 BoogieIcfgContainer [2021-10-11 00:31:21,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:31:21,850 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:31:21,850 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:31:21,854 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:31:21,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:31:21,855 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:31:21" (1/3) ... [2021-10-11 00:31:21,856 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ae6e1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:31:21, skipping insertion in model container [2021-10-11 00:31:21,856 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:31:21,856 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:21" (2/3) ... [2021-10-11 00:31:21,857 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ae6e1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:31:21, skipping insertion in model container [2021-10-11 00:31:21,857 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:31:21,857 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:21" (3/3) ... [2021-10-11 00:31:21,859 INFO L389 chiAutomizerObserver]: Analyzing ICFG gcd_4.c [2021-10-11 00:31:21,906 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:31:21,906 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:31:21,906 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:31:21,907 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:31:21,907 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:31:21,907 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:31:21,907 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:31:21,907 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:31:21,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2021-10-11 00:31:21,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:21,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:21,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:21,947 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-11 00:31:21,947 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:21,947 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:31:21,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2021-10-11 00:31:21,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:21,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:21,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:21,950 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-11 00:31:21,950 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:21,958 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 21#L14true assume !(gcd_test_~a < 0); 17#L14-2true assume !(gcd_test_~b < 0); 22#L15-1true assume !(0 == gcd_test_~a); 11#L22-2true [2021-10-11 00:31:21,958 INFO L796 eck$LassoCheckResult]: Loop: 11#L22-2true assume !!(0 != gcd_test_~b); 15#L22true assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 11#L22-2true [2021-10-11 00:31:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:21,964 INFO L82 PathProgramCache]: Analyzing trace with hash 28695882, now seen corresponding path program 1 times [2021-10-11 00:31:21,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:21,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105310031] [2021-10-11 00:31:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,144 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:22,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 1 times [2021-10-11 00:31:22,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:22,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136580890] [2021-10-11 00:31:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:22,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939727, now seen corresponding path program 1 times [2021-10-11 00:31:22,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:22,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085331126] [2021-10-11 00:31:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:22,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085331126] [2021-10-11 00:31:22,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:22,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:22,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331487919] [2021-10-11 00:31:22,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:22,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:22,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:22,349 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2021-10-11 00:31:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:22,397 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-11 00:31:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:22,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 24 transitions. [2021-10-11 00:31:22,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:22,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 10 transitions. [2021-10-11 00:31:22,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-11 00:31:22,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-11 00:31:22,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2021-10-11 00:31:22,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:31:22,409 INFO L692 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:31:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2021-10-11 00:31:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:31:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:31:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-11 00:31:22,437 INFO L715 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:31:22,437 INFO L595 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:31:22,437 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:31:22,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-10-11 00:31:22,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:22,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:22,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:22,439 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:22,439 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:22,440 INFO L794 eck$LassoCheckResult]: Stem: 57#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 55#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 56#L14 assume !(gcd_test_~a < 0); 60#L14-2 assume !(gcd_test_~b < 0); 61#L15-1 assume !(0 == gcd_test_~a); 62#L22-2 assume !!(0 != gcd_test_~b); 58#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 59#L22-2 [2021-10-11 00:31:22,440 INFO L796 eck$LassoCheckResult]: Loop: 59#L22-2 assume !!(0 != gcd_test_~b); 63#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 59#L22-2 [2021-10-11 00:31:22,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:22,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939725, now seen corresponding path program 1 times [2021-10-11 00:31:22,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:22,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527533037] [2021-10-11 00:31:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,474 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,480 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:22,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 2 times [2021-10-11 00:31:22,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:22,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838385549] [2021-10-11 00:31:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,493 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:22,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1302289042, now seen corresponding path program 1 times [2021-10-11 00:31:22,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:22,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920552410] [2021-10-11 00:31:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:22,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920552410] [2021-10-11 00:31:22,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991187612] [2021-10-11 00:31:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:22,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:31:22,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:22,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:22,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-11 00:31:22,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209619808] [2021-10-11 00:31:22,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:22,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:31:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:31:22,842 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 6 states. [2021-10-11 00:31:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:22,890 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-10-11 00:31:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:22,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2021-10-11 00:31:22,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:22,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 00:31:22,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-11 00:31:22,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-11 00:31:22,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2021-10-11 00:31:22,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:31:22,897 INFO L692 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 00:31:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2021-10-11 00:31:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 00:31:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:31:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 00:31:22,901 INFO L715 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 00:31:22,902 INFO L595 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 00:31:22,902 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-11 00:31:22,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2021-10-11 00:31:22,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:22,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:22,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:22,906 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-11 00:31:22,907 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:22,907 INFO L794 eck$LassoCheckResult]: Stem: 112#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 110#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 111#L14 assume !(gcd_test_~a < 0); 115#L14-2 assume !(gcd_test_~b < 0); 116#L15-1 assume !(0 == gcd_test_~a); 117#L22-2 assume !!(0 != gcd_test_~b); 113#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 114#L22-2 assume !!(0 != gcd_test_~b); 118#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 120#L22-2 [2021-10-11 00:31:22,907 INFO L796 eck$LassoCheckResult]: Loop: 120#L22-2 assume !!(0 != gcd_test_~b); 119#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 120#L22-2 [2021-10-11 00:31:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:22,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1302289040, now seen corresponding path program 2 times [2021-10-11 00:31:22,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:22,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845213633] [2021-10-11 00:31:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:22,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:22,985 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:22,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 3 times [2021-10-11 00:31:22,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:22,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483828300] [2021-10-11 00:31:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,018 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:23,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1664285205, now seen corresponding path program 2 times [2021-10-11 00:31:23,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:23,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373853986] [2021-10-11 00:31:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:23,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373853986] [2021-10-11 00:31:23,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529038584] [2021-10-11 00:31:23,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:23,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:31:23,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:23,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:31:23,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:23,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:23,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-11 00:31:23,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994582276] [2021-10-11 00:31:23,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:23,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:31:23,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:31:23,279 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 8 states. [2021-10-11 00:31:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:23,308 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-11 00:31:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:31:23,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2021-10-11 00:31:23,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:23,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 00:31:23,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-11 00:31:23,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-11 00:31:23,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2021-10-11 00:31:23,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:31:23,314 INFO L692 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 00:31:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2021-10-11 00:31:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 00:31:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 00:31:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 00:31:23,317 INFO L715 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 00:31:23,317 INFO L595 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 00:31:23,318 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-11 00:31:23,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2021-10-11 00:31:23,323 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:23,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:23,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:23,324 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-11 00:31:23,324 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:23,325 INFO L794 eck$LassoCheckResult]: Stem: 179#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 177#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 178#L14 assume !(gcd_test_~a < 0); 182#L14-2 assume !(gcd_test_~b < 0); 183#L15-1 assume !(0 == gcd_test_~a); 184#L22-2 assume !!(0 != gcd_test_~b); 180#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 181#L22-2 assume !!(0 != gcd_test_~b); 185#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 189#L22-2 assume !!(0 != gcd_test_~b); 188#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 187#L22-2 [2021-10-11 00:31:23,325 INFO L796 eck$LassoCheckResult]: Loop: 187#L22-2 assume !!(0 != gcd_test_~b); 186#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 187#L22-2 [2021-10-11 00:31:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:23,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1664285203, now seen corresponding path program 3 times [2021-10-11 00:31:23,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:23,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188994718] [2021-10-11 00:31:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,388 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:23,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 4 times [2021-10-11 00:31:23,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:23,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565958469] [2021-10-11 00:31:23,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,408 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:23,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:23,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1650246872, now seen corresponding path program 3 times [2021-10-11 00:31:23,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:23,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619555211] [2021-10-11 00:31:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:23,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:23,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:23,784 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2021-10-11 00:31:23,894 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:31:23,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:31:23,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:31:23,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:31:23,895 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:31:23,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:23,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:31:23,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:31:23,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd_4.c_Iteration4_Lasso [2021-10-11 00:31:23,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:31:23,896 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:31:23,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:23,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:23,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:31:24,339 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:31:24,343 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:24,355 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 [2021-10-11 00:31:24,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,363 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,363 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,373 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,409 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 [2021-10-11 00:31:24,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:31:24,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:31:24,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:31:24,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:24,471 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 [2021-10-11 00:31:24,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,477 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,477 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,502 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:24,543 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 [2021-10-11 00:31:24,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,549 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,562 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:24,599 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 [2021-10-11 00:31:24,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,606 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,606 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:24,663 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 [2021-10-11 00:31:24,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,678 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,679 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:31:24,692 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:24,735 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 [2021-10-11 00:31:24,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,746 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,746 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,770 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,802 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 [2021-10-11 00:31:24,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,806 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,806 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:31:24,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,847 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 [2021-10-11 00:31:24,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,851 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,851 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:31:24,882 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:24,909 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 [2021-10-11 00:31:24,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,912 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,912 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:31:24,937 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:24,957 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 [2021-10-11 00:31:24,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:24,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:24,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:24,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:24,961 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:24,961 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:31:24,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:25,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:25,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:25,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:25,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:25,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:25,018 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:25,020 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:31:25,035 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:25,065 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 [2021-10-11 00:31:25,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:25,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:25,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:25,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:25,070 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:25,070 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:31:25,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:25,135 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 [2021-10-11 00:31:25,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:25,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:25,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:25,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:25,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:31:25,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:25,162 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:25,200 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 [2021-10-11 00:31:25,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:25,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:31:25,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:25,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:31:25,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:25,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:31:25,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:25,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:25,252 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 [2021-10-11 00:31:25,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:31:25,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:31:25,255 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:25,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:31:25,291 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-11 00:31:25,291 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-11 00:31:25,336 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:31:25,422 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-11 00:31:25,422 INFO L444 ModelExtractionUtils]: 25 out of 36 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:31:25,450 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:31:25,470 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-11 00:31:25,471 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:31:25,471 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_gcd_test_~b) = 1*ULTIMATE.start_gcd_test_~b Supporting invariants [1*ULTIMATE.start_gcd_test_~a - 2 >= 0] [2021-10-11 00:31:25,527 INFO L297 tatePredicateManager]: 7 out of 8 supporting invariants were superfluous and have been removed [2021-10-11 00:31:25,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:25,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:31:25,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:25,665 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:31:25,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:25,677 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 1 loop predicates [2021-10-11 00:31:25,678 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2021-10-11 00:31:25,775 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2021-10-11 00:31:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:31:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 00:31:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-11 00:31:25,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2021-10-11 00:31:25,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:31:25,780 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:31:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:25,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:31:25,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:25,918 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:31:25,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:25,930 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 1 loop predicates [2021-10-11 00:31:25,930 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2021-10-11 00:31:25,988 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2021-10-11 00:31:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:31:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 00:31:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-11 00:31:25,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2021-10-11 00:31:25,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:31:25,990 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:31:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:26,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:31:26,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:26,144 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:31:26,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:26,152 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 1 loop predicates [2021-10-11 00:31:26,152 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 6 states. [2021-10-11 00:31:26,294 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 21 states and 25 transitions. Complement of second has 12 states. [2021-10-11 00:31:26,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2021-10-11 00:31:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 00:31:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2021-10-11 00:31:26,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 2 letters. [2021-10-11 00:31:26,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:31:26,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 13 letters. Loop has 2 letters. [2021-10-11 00:31:26,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:31:26,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-11 00:31:26,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:31:26,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 25 transitions. [2021-10-11 00:31:26,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-11 00:31:26,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 19 states and 23 transitions. [2021-10-11 00:31:26,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-11 00:31:26,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-11 00:31:26,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2021-10-11 00:31:26,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:31:26,302 INFO L692 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-11 00:31:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2021-10-11 00:31:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-10-11 00:31:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:31:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-10-11 00:31:26,307 INFO L715 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-10-11 00:31:26,307 INFO L595 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-10-11 00:31:26,307 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-11 00:31:26,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2021-10-11 00:31:26,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:26,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:26,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:26,310 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2021-10-11 00:31:26,310 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:26,311 INFO L794 eck$LassoCheckResult]: Stem: 460#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 458#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 459#L14 assume !(gcd_test_~a < 0); 465#L14-2 assume !(gcd_test_~b < 0); 466#L15-1 assume !(0 == gcd_test_~a); 467#L22-2 assume !!(0 != gcd_test_~b); 474#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 473#L22-2 assume !!(0 != gcd_test_~b); 472#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 471#L22-2 assume !!(0 != gcd_test_~b); 470#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 469#L22-2 assume !!(0 != gcd_test_~b); 461#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 462#L22-2 [2021-10-11 00:31:26,311 INFO L796 eck$LassoCheckResult]: Loop: 462#L22-2 assume !!(0 != gcd_test_~b); 468#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 462#L22-2 [2021-10-11 00:31:26,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:26,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1650246870, now seen corresponding path program 4 times [2021-10-11 00:31:26,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:26,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224013950] [2021-10-11 00:31:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:26,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224013950] [2021-10-11 00:31:26,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:26,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:31:26,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474799808] [2021-10-11 00:31:26,413 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:31:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 5 times [2021-10-11 00:31:26,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:26,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524222387] [2021-10-11 00:31:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:26,418 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:26,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:26,424 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:26,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:31:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:31:26,443 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand 6 states. [2021-10-11 00:31:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:26,479 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-11 00:31:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:31:26,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2021-10-11 00:31:26,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:26,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 20 transitions. [2021-10-11 00:31:26,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-10-11 00:31:26,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-10-11 00:31:26,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 20 transitions. [2021-10-11 00:31:26,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:31:26,483 INFO L692 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-11 00:31:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 20 transitions. [2021-10-11 00:31:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-11 00:31:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:31:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 00:31:26,487 INFO L715 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 00:31:26,487 INFO L595 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 00:31:26,487 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-11 00:31:26,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2021-10-11 00:31:26,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:26,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:26,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:26,490 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:26,490 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:26,491 INFO L794 eck$LassoCheckResult]: Stem: 505#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 503#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 504#L14 assume !(gcd_test_~a < 0); 510#L14-2 assume !(gcd_test_~b < 0); 511#L15-1 assume !(0 == gcd_test_~a); 512#L22-2 assume !!(0 != gcd_test_~b); 519#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 518#L22-2 assume !!(0 != gcd_test_~b); 517#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 516#L22-2 assume !!(0 != gcd_test_~b); 515#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 514#L22-2 assume !!(0 != gcd_test_~b); 508#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 509#L22-2 assume !!(0 != gcd_test_~b); 506#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 507#L22-2 [2021-10-11 00:31:26,491 INFO L796 eck$LassoCheckResult]: Loop: 507#L22-2 assume !!(0 != gcd_test_~b); 513#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 507#L22-2 [2021-10-11 00:31:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:26,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1044312667, now seen corresponding path program 4 times [2021-10-11 00:31:26,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:26,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415163822] [2021-10-11 00:31:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:26,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415163822] [2021-10-11 00:31:26,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698415524] [2021-10-11 00:31:26,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:26,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:31:26,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:31:26,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:26,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:26,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-11 00:31:26,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157242669] [2021-10-11 00:31:26,782 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:31:26,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:26,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 6 times [2021-10-11 00:31:26,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:26,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16945619] [2021-10-11 00:31:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:26,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:26,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:26,801 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:26,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:31:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:31:26,823 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand 12 states. [2021-10-11 00:31:26,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:26,899 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-11 00:31:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:31:26,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2021-10-11 00:31:26,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:26,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 22 transitions. [2021-10-11 00:31:26,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-10-11 00:31:26,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-10-11 00:31:26,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2021-10-11 00:31:26,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:31:26,905 INFO L692 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-11 00:31:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2021-10-11 00:31:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-11 00:31:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:31:26,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-11 00:31:26,907 INFO L715 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 00:31:26,907 INFO L595 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 00:31:26,911 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-11 00:31:26,911 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2021-10-11 00:31:26,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:31:26,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:31:26,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:31:26,915 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 2, 1, 1, 1, 1, 1] [2021-10-11 00:31:26,915 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:31:26,916 INFO L794 eck$LassoCheckResult]: Stem: 602#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 600#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 601#L14 assume !(gcd_test_~a < 0); 607#L14-2 assume !(gcd_test_~b < 0); 608#L15-1 assume !(0 == gcd_test_~a); 609#L22-2 assume !!(0 != gcd_test_~b); 618#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 617#L22-2 assume !!(0 != gcd_test_~b); 616#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 615#L22-2 assume !!(0 != gcd_test_~b); 614#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 612#L22-2 assume !!(0 != gcd_test_~b); 613#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 611#L22-2 assume !!(0 != gcd_test_~b); 605#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 606#L22-2 assume !!(0 != gcd_test_~b); 603#L22 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 604#L22-2 [2021-10-11 00:31:26,916 INFO L796 eck$LassoCheckResult]: Loop: 604#L22-2 assume !!(0 != gcd_test_~b); 610#L22 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 604#L22-2 [2021-10-11 00:31:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1437871456, now seen corresponding path program 5 times [2021-10-11 00:31:26,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:26,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072194286] [2021-10-11 00:31:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:27,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072194286] [2021-10-11 00:31:27,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148261284] [2021-10-11 00:31:27,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcec41db-97de-4e96-9866-a9b0ed8aef44/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:27,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-11 00:31:27,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 00:31:27,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:27,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:27,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-11 00:31:27,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366806799] [2021-10-11 00:31:27,189 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:31:27,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:27,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 7 times [2021-10-11 00:31:27,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:27,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209570902] [2021-10-11 00:31:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:27,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:27,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:27,195 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:27,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:27,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:31:27,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:31:27,211 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. cyclomatic complexity: 4 Second operand 13 states. [2021-10-11 00:31:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:27,366 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-11 00:31:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:31:27,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 15 transitions. [2021-10-11 00:31:27,366 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:31:27,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2021-10-11 00:31:27,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:31:27,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:31:27,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:31:27,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:31:27,367 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:31:27,367 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:31:27,367 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:31:27,367 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-11 00:31:27,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:31:27,368 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:31:27,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-11 00:31:27,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:31:27 BoogieIcfgContainer [2021-10-11 00:31:27,373 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:31:27,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:31:27,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:31:27,377 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:31:27,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:21" (3/4) ... [2021-10-11 00:31:27,380 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:31:27,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:31:27,382 INFO L168 Benchmark]: Toolchain (without parser) took 6212.57 ms. Allocated memory was 83.9 MB in the beginning and 161.5 MB in the end (delta: 77.6 MB). Free memory was 50.3 MB in the beginning and 124.9 MB in the end (delta: -74.6 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:27,382 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 56.4 MB in the beginning and 56.4 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:27,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.32 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 50.0 MB in the beginning and 86.1 MB in the end (delta: -36.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:27,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.29 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:27,391 INFO L168 Benchmark]: Boogie Preprocessor took 23.10 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 83.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:27,391 INFO L168 Benchmark]: RCFGBuilder took 343.76 ms. Allocated memory is still 109.1 MB. Free memory was 83.3 MB in the beginning and 70.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:27,393 INFO L168 Benchmark]: BuchiAutomizer took 5523.69 ms. Allocated memory was 109.1 MB in the beginning and 161.5 MB in the end (delta: 52.4 MB). Free memory was 70.0 MB in the beginning and 124.9 MB in the end (delta: -54.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:27,396 INFO L168 Benchmark]: Witness Printer took 6.24 ms. Allocated memory is still 161.5 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:27,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 56.4 MB in the beginning and 56.4 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.32 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 50.0 MB in the beginning and 86.1 MB in the end (delta: -36.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.29 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.10 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 83.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 343.76 ms. Allocated memory is still 109.1 MB. Free memory was 83.3 MB in the beginning and 70.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5523.69 ms. Allocated memory was 109.1 MB in the beginning and 161.5 MB in the end (delta: 52.4 MB). Free memory was 70.0 MB in the beginning and 124.9 MB in the end (delta: -54.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.24 ms. Allocated memory is still 161.5 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (6 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function b and consists of 7 locations. 6 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 8 iterations. TraceHistogramMax:6. Analysis of lassos took 4.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 6. Nontrivial modules had stage [0, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 36 SDtfs, 71 SDslu, 45 SDs, 0 SdLazy, 271 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN3 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital139 mio100 ax100 hnf100 lsp66 ukn47 mio100 lsp81 div100 bol100 ite100 ukn100 eq205 hnf90 smp100 dnf122 smp100 tf100 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 225ms VariablesStem: 6 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...