./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt --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 601aa02d8073825ca8af8297fbd6b010f8103f99 ................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:26:17,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:26:17,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:26:17,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:26:17,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:26:18,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:26:18,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:26:18,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:26:18,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:26:18,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:26:18,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:26:18,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:26:18,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:26:18,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:26:18,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:26:18,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:26:18,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:26:18,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:26:18,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:26:18,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:26:18,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:26:18,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:26:18,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:26:18,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:26:18,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:26:18,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:26:18,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:26:18,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:26:18,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:26:18,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:26:18,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:26:18,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:26:18,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:26:18,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:26:18,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:26:18,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:26:18,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:26:18,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:26:18,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:26:18,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:26:18,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:26:18,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 00:26:18,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:26:18,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:26:18,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:26:18,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:26:18,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:26:18,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:26:18,124 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:26:18,125 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:26:18,125 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:26:18,125 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:26:18,126 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:26:18,127 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:26:18,127 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:26:18,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:26:18,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:26:18,128 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:26:18,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:26:18,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:26:18,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:26:18,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:26:18,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:26:18,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:26:18,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:26:18,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:26:18,130 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:26:18,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:26:18,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:26:18,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:26:18,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:26:18,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:26:18,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:26:18,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:26:18,135 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:26:18,136 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_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 601aa02d8073825ca8af8297fbd6b010f8103f99 [2021-10-13 00:26:18,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:26:18,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:26:18,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:26:18,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:26:18,480 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:26:18,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2021-10-13 00:26:18,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/data/71eda3031/866bc45eb66648e8a2543869825e577f/FLAGcd196b377 [2021-10-13 00:26:19,082 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:26:19,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2021-10-13 00:26:19,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/data/71eda3031/866bc45eb66648e8a2543869825e577f/FLAGcd196b377 [2021-10-13 00:26:19,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/data/71eda3031/866bc45eb66648e8a2543869825e577f [2021-10-13 00:26:19,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:26:19,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:26:19,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:19,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:26:19,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:26:19,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b326367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19, skipping insertion in model container [2021-10-13 00:26:19,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:26:19,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:26:19,665 WARN L228 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_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[354,367] [2021-10-13 00:26:19,667 WARN L228 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_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[442,455] [2021-10-13 00:26:19,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:19,678 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:26:19,691 WARN L228 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_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[354,367] [2021-10-13 00:26:19,692 WARN L228 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_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[442,455] [2021-10-13 00:26:19,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:19,706 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:26:19,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19 WrapperNode [2021-10-13 00:26:19,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:19,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:19,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:26:19,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:26:19,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:19,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:26:19,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:26:19,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:26:19,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:26:19,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:26:19,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:26:19,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:26:19,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (1/1) ... [2021-10-13 00:26:19,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:19,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:19,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:19,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:26:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 00:26:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 00:26:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:26:19,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:26:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:26:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2021-10-13 00:26:19,841 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2021-10-13 00:26:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:26:19,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:26:19,998 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 00:26:19,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:19 BoogieIcfgContainer [2021-10-13 00:26:20,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:26:20,001 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:26:20,001 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:26:20,004 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:26:20,005 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:26:20,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:26:19" (1/3) ... [2021-10-13 00:26:20,006 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18d6f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:26:20, skipping insertion in model container [2021-10-13 00:26:20,006 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:26:20,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:19" (2/3) ... [2021-10-13 00:26:20,007 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18d6f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:26:20, skipping insertion in model container [2021-10-13 00:26:20,007 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:26:20,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:19" (3/3) ... [2021-10-13 00:26:20,009 INFO L389 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-1.c [2021-10-13 00:26:20,052 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:26:20,053 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:26:20,053 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:26:20,053 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:26:20,053 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:26:20,053 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:26:20,054 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:26:20,054 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:26:20,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:26:20,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:26:20,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:26:20,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:26:20,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:26:20,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:26:20,097 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:26:20,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:26:20,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:26:20,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:26:20,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:26:20,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:26:20,100 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:26:20,107 INFO L791 eck$LassoCheckResult]: Stem: 8#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(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res; 16#L23true call f(4);< 13#fENTRYtrue [2021-10-13 00:26:20,107 INFO L793 eck$LassoCheckResult]: Loop: 13#fENTRYtrue ~n := #in~n; 6#L9true assume !(~n < 3);#t~post9 := ~n;~n := #t~post9 - 1;havoc #t~post9; 9#L11true call f2(~n);< 7#f2ENTRYtrue ~n := #in~n; 15#L16true assume !(~n < 3);#t~post10 := ~n;~n := #t~post10 - 1;havoc #t~post10; 17#L18true call f(~n);< 13#fENTRYtrue [2021-10-13 00:26:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:20,113 INFO L82 PathProgramCache]: Analyzing trace with hash 38808, now seen corresponding path program 1 times [2021-10-13 00:26:20,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:20,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495296378] [2021-10-13 00:26:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:20,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:20,221 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:20,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:20,258 INFO L82 PathProgramCache]: Analyzing trace with hash 891958565, now seen corresponding path program 1 times [2021-10-13 00:26:20,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:20,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247262684] [2021-10-13 00:26:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:20,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:20,270 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:20,279 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:20,281 INFO L82 PathProgramCache]: Analyzing trace with hash 904560508, now seen corresponding path program 1 times [2021-10-13 00:26:20,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:20,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993295504] [2021-10-13 00:26:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:20,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:20,302 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:20,327 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:20,509 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:26:20,510 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:26:20,510 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:26:20,510 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:26:20,510 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:26:20,511 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:20,511 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:26:20,511 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:26:20,511 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2021-10-13 00:26:20,511 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:26:20,512 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:26:20,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,601 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:26:20,601 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:26:20,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:20,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:20,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:20,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:20,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:26:20,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:26:20,649 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2_#t~post10=0} Honda state: {f2_#t~post10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:26:20,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:20,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:20,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:20,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:20,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:20,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:20,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:26:20,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:20,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:20,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:20,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:20,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:26:20,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:20,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:26:20,890 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:26:20,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:20,898 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:26:20,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:26:20,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:26:20,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:26:20,898 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:26:20,898 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:20,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:26:20,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:26:20,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2021-10-13 00:26:20,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:26:20,899 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:26:20,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:20,987 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:26:20,992 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:26:20,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:20,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:20,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:21,003 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 [2021-10-13 00:26:21,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:21,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:26:21,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:21,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:21,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:21,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:26:21,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:26:21,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:26:21,029 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:26:21,043 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:26:21,043 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:26:21,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:21,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:21,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:21,053 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:26:21,053 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:26:21,054 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:26:21,054 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2021-10-13 00:26:21,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:26:21,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:21,094 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:26:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:21,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:26:21,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:26:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:21,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:26:21,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:26:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:21,375 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-10-13 00:26:21,376 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:21,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-13 00:26:21,602 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 62 transitions. Complement of second has 26 states. [2021-10-13 00:26:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-13 00:26:21,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 24 transitions. [2021-10-13 00:26:21,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-13 00:26:21,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:21,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 9 letters. Loop has 6 letters. [2021-10-13 00:26:21,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:21,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 3 letters. Loop has 12 letters. [2021-10-13 00:26:21,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:21,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 62 transitions. [2021-10-13 00:26:21,616 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:26:21,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 0 states and 0 transitions. [2021-10-13 00:26:21,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:26:21,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:26:21,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:26:21,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:26:21,621 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:26:21,621 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:26:21,622 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:26:21,622 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:26:21,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:26:21,622 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:26:21,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:26:21,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:26:21 BoogieIcfgContainer [2021-10-13 00:26:21,628 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:26:21,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:26:21,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:26:21,629 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:26:21,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:19" (3/4) ... [2021-10-13 00:26:21,632 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:26:21,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:26:21,634 INFO L168 Benchmark]: Toolchain (without parser) took 2171.41 ms. Allocated memory was 144.7 MB in the beginning and 180.4 MB in the end (delta: 35.7 MB). Free memory was 104.6 MB in the beginning and 152.8 MB in the end (delta: -48.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:21,635 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 161.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:21,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.00 ms. Allocated memory is still 144.7 MB. Free memory was 104.5 MB in the beginning and 117.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:21,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.42 ms. Allocated memory is still 144.7 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:21,637 INFO L168 Benchmark]: Boogie Preprocessor took 16.79 ms. Allocated memory is still 144.7 MB. Free memory was 115.9 MB in the beginning and 115.2 MB in the end (delta: 666.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:21,638 INFO L168 Benchmark]: RCFGBuilder took 243.82 ms. Allocated memory is still 144.7 MB. Free memory was 115.2 MB in the beginning and 106.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:21,639 INFO L168 Benchmark]: BuchiAutomizer took 1627.36 ms. Allocated memory was 144.7 MB in the beginning and 180.4 MB in the end (delta: 35.7 MB). Free memory was 106.0 MB in the beginning and 152.8 MB in the end (delta: -46.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:21,639 INFO L168 Benchmark]: Witness Printer took 4.15 ms. Allocated memory is still 180.4 MB. Free memory is still 152.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:21,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 161.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.00 ms. Allocated memory is still 144.7 MB. Free memory was 104.5 MB in the beginning and 117.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.42 ms. Allocated memory is still 144.7 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.79 ms. Allocated memory is still 144.7 MB. Free memory was 115.9 MB in the beginning and 115.2 MB in the end (delta: 666.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 243.82 ms. Allocated memory is still 144.7 MB. Free memory was 115.2 MB in the beginning and 106.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1627.36 ms. Allocated memory was 144.7 MB in the beginning and 180.4 MB in the end (delta: 35.7 MB). Free memory was 106.0 MB in the beginning and 152.8 MB in the end (delta: -46.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.15 ms. Allocated memory is still 180.4 MB. Free memory is still 152.8 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 12 SDslu, 9 SDs, 0 SdLazy, 56 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.9ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 59ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:26:21,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f9f4ac-cf2a-498e-ac26-c447b8192a0c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...