./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0 --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 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:32:54,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:32:54,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:32:54,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:32:54,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:32:54,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:32:54,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:32:54,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:32:54,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:32:54,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:32:54,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:32:54,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:32:54,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:32:54,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:32:54,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:32:54,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:32:54,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:32:54,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:32:54,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:32:54,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:32:54,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:32:54,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:32:54,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:32:54,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:32:54,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:32:54,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:32:54,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:32:54,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:32:54,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:32:54,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:32:54,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:32:54,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:32:54,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:32:54,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:32:54,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:32:54,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:32:54,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:32:54,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:32:54,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:32:54,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:32:54,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:32:54,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-22 15:32:54,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:32:54,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:32:54,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:32:54,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:32:54,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:32:54,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:32:54,806 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:32:54,806 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-22 15:32:54,806 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-22 15:32:54,806 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-22 15:32:54,808 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-22 15:32:54,808 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-22 15:32:54,808 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-22 15:32:54,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:32:54,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:32:54,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:32:54,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:32:54,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:32:54,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:32:54,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-22 15:32:54,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-22 15:32:54,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-22 15:32:54,811 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:32:54,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:32:54,811 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-22 15:32:54,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:32:54,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-22 15:32:54,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:32:54,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:32:54,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:32:54,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:32:54,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:32:54,816 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-22 15:32:54,816 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_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c [2021-11-22 15:32:55,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:32:55,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:32:55,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:32:55,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:32:55,189 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:32:55,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2021-11-22 15:32:55,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/data/50845e824/bc51c69f0903450a9a4924985e211bcd/FLAG84090949f [2021-11-22 15:32:55,976 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:32:55,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/sv-benchmarks/c/recursive/McCarthy91-2.c [2021-11-22 15:32:55,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/data/50845e824/bc51c69f0903450a9a4924985e211bcd/FLAG84090949f [2021-11-22 15:32:56,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/data/50845e824/bc51c69f0903450a9a4924985e211bcd [2021-11-22 15:32:56,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:32:56,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:32:56,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:32:56,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:32:56,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:32:56,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81325f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56, skipping insertion in model container [2021-11-22 15:32:56,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:32:56,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:32:56,618 WARN L230 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_b256ebf8-f1be-4516-a4e7-e7a132feccd6/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2021-11-22 15:32:56,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:32:56,630 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:32:56,648 WARN L230 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_b256ebf8-f1be-4516-a4e7-e7a132feccd6/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2021-11-22 15:32:56,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:32:56,665 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:32:56,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56 WrapperNode [2021-11-22 15:32:56,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:32:56,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:32:56,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:32:56,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:32:56,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,706 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-11-22 15:32:56,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:32:56,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:32:56,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:32:56,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:32:56,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:32:56,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:32:56,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:32:56,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:32:56,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (1/1) ... [2021-11-22 15:32:56,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:56,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:56,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:56,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-22 15:32:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:32:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:32:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:32:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:32:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2021-11-22 15:32:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2021-11-22 15:32:56,937 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:32:56,939 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:32:57,086 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:32:57,094 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:32:57,094 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:32:57,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:57 BoogieIcfgContainer [2021-11-22 15:32:57,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:32:57,097 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-22 15:32:57,097 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-22 15:32:57,102 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-22 15:32:57,103 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:32:57,103 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 03:32:56" (1/3) ... [2021-11-22 15:32:57,104 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2be813bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:32:57, skipping insertion in model container [2021-11-22 15:32:57,104 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:32:57,104 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:32:56" (2/3) ... [2021-11-22 15:32:57,105 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2be813bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:32:57, skipping insertion in model container [2021-11-22 15:32:57,105 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:32:57,105 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:32:57" (3/3) ... [2021-11-22 15:32:57,107 INFO L388 chiAutomizerObserver]: Analyzing ICFG McCarthy91-2.c [2021-11-22 15:32:57,161 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-22 15:32:57,161 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-22 15:32:57,161 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-22 15:32:57,161 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-22 15:32:57,161 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-22 15:32:57,162 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-22 15:32:57,162 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-22 15:32:57,162 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-22 15:32:57,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-22 15:32:57,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:32:57,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:32:57,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:32:57,216 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-22 15:32:57,216 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:32:57,216 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-22 15:32:57,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-22 15:32:57,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:32:57,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:32:57,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:32:57,220 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-22 15:32:57,220 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:32:57,229 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 15#L28true call main_#t~ret7#1 := f91(main_~x~0#1);< 7#f91ENTRYtrue [2021-11-22 15:32:57,230 INFO L793 eck$LassoCheckResult]: Loop: 7#f91ENTRYtrue ~x := #in~x; 11#L18true assume !(~x > 100); 12#L21true call #t~ret4 := f91(11 + ~x);< 7#f91ENTRYtrue [2021-11-22 15:32:57,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash 29877, now seen corresponding path program 1 times [2021-11-22 15:32:57,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:57,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215875929] [2021-11-22 15:32:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:57,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:57,372 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:32:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:57,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:32:57,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash 44821, now seen corresponding path program 1 times [2021-11-22 15:32:57,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:57,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179230528] [2021-11-22 15:32:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:57,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:57,451 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:32:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:57,462 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:32:57,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 890080737, now seen corresponding path program 1 times [2021-11-22 15:32:57,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:57,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843246199] [2021-11-22 15:32:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:57,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:57,495 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:32:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:57,515 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:32:57,730 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:32:57,731 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:32:57,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:32:57,731 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:32:57,731 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:32:57,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:57,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:32:57,732 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:32:57,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2021-11-22 15:32:57,732 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:32:57,732 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:32:57,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:57,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:57,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:57,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:57,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:57,896 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:32:57,897 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:32:57,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:57,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:57,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:57,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:32:57,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:32:57,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-22 15:32:57,935 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:32:57,936 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-22 15:32:57,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:57,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:57,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:57,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:32:57,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:32:58,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-22 15:32:58,015 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:32:58,016 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-22 15:32:58,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:58,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:58,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:58,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:58,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:32:58,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:32:58,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-22 15:32:58,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:58,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:58,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:58,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:58,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:32:58,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:32:58,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-22 15:32:58,220 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:32:58,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:58,227 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:32:58,227 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:32:58,227 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:32:58,227 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:32:58,227 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:32:58,227 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:58,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:32:58,228 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:32:58,228 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2021-11-22 15:32:58,228 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:32:58,228 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:32:58,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:58,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:58,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:58,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:58,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:58,324 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:32:58,330 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:32:58,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:58,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:58,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:58,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-22 15:32:58,355 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:32:58,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:32:58,367 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:32:58,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:32:58,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:32:58,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:32:58,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:32:58,370 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:32:58,384 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:32:58,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:58,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:58,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:58,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:58,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-22 15:32:58,436 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:32:58,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:32:58,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:32:58,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:32:58,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:32:58,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:32:58,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:32:58,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:32:58,467 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:32:58,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:58,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:58,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:58,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:58,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:32:58,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:32:58,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:32:58,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:32:58,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:32:58,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:32:58,527 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:32:58,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:32:58,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-22 15:32:58,547 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:32:58,551 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:32:58,551 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:32:58,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:58,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:58,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:58,559 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:32:58,560 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:32:58,560 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:32:58,560 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2021-11-22 15:32:58,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-22 15:32:58,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:58,607 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:32:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:32:58,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:32:58,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:32:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:32:58,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:32:58,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:32:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:32:58,805 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-22 15:32:58,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:58,989 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 42 transitions. Complement of second has 12 states. [2021-11-22 15:32:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-22 15:32:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:32:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-11-22 15:32:59,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2021-11-22 15:32:59,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:32:59,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2021-11-22 15:32:59,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:32:59,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2021-11-22 15:32:59,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:32:59,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2021-11-22 15:32:59,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:32:59,032 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 19 states and 25 transitions. [2021-11-22 15:32:59,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-11-22 15:32:59,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-11-22 15:32:59,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2021-11-22 15:32:59,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:32:59,038 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-22 15:32:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2021-11-22 15:32:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-22 15:32:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-22 15:32:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-22 15:32:59,075 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-22 15:32:59,075 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-22 15:32:59,075 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-22 15:32:59,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-11-22 15:32:59,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:32:59,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:32:59,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:32:59,080 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:32:59,081 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-22 15:32:59,081 INFO L791 eck$LassoCheckResult]: Stem: 103#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 104#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 109#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 111#f91ENTRY ~x := #in~x; 112#L18 assume !(~x > 100); 106#L21 call #t~ret4 := f91(11 + ~x);< 113#f91ENTRY ~x := #in~x; 114#L18 assume ~x > 100;#res := ~x - 10; 118#f91FINAL assume true; 105#f91EXIT >#27#return; 107#L21-1 [2021-11-22 15:32:59,081 INFO L793 eck$LassoCheckResult]: Loop: 107#L21-1 call #t~ret5 := f91(#t~ret4);< 110#f91ENTRY ~x := #in~x; 119#L18 assume !(~x > 100); 108#L21 call #t~ret4 := f91(11 + ~x);< 110#f91ENTRY ~x := #in~x; 119#L18 assume ~x > 100;#res := ~x - 10; 116#f91FINAL assume true; 117#f91EXIT >#27#return; 107#L21-1 [2021-11-22 15:32:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1243034264, now seen corresponding path program 1 times [2021-11-22 15:32:59,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:59,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119151175] [2021-11-22 15:32:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:59,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:59,118 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:32:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:59,148 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:32:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 1 times [2021-11-22 15:32:59,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:59,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473380884] [2021-11-22 15:32:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:59,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:59,174 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:32:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:59,186 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:32:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:32:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash -291973751, now seen corresponding path program 1 times [2021-11-22 15:32:59,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:32:59,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585205995] [2021-11-22 15:32:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:32:59,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:32:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:59,221 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:32:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:32:59,267 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:32:59,509 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:32:59,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:32:59,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:32:59,509 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:32:59,509 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:32:59,510 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:59,510 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:32:59,510 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:32:59,510 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2021-11-22 15:32:59,510 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:32:59,510 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:32:59,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:59,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:59,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:32:59,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:59,656 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:32:59,659 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:32:59,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:59,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:59,661 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:59,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:32:59,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:32:59,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-22 15:32:59,700 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:32:59,701 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret5=0} Honda state: {f91_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-22 15:32:59,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:59,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:59,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:59,744 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:59,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:32:59,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:32:59,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-22 15:32:59,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:32:59,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:32:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:32:59,841 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:32:59,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:32:59,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:32:59,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b256ebf8-f1be-4516-a4e7-e7a132feccd6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process