./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/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_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/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 64bit --witnessprinter.graph.data.programhash 1a89472887c6d71cf4d1ec04e28f84fbc7b73a39 ..................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:59:52,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:59:52,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:59:52,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:59:52,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:59:52,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:59:52,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:59:52,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:59:52,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:59:52,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:59:52,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:59:52,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:59:52,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:59:52,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:59:52,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:59:52,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:59:52,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:59:52,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:59:52,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:59:52,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:59:52,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:59:52,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:59:52,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:59:52,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:59:52,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:59:52,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:59:52,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:59:52,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:59:52,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:59:52,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:59:52,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:59:52,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:59:52,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:59:52,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:59:52,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:59:52,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:59:52,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:59:52,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:59:52,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:59:52,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:59:52,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:59:52,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 00:59:52,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:59:52,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:59:52,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:59:52,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:59:52,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:59:52,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:59:52,995 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:59:52,996 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:59:52,996 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:59:52,996 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:59:52,996 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:59:52,997 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:59:52,997 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:59:52,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:59:52,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:59:52,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:59:52,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:59:52,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:59:52,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:59:52,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:59:52,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:59:52,999 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:59:52,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:59:52,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:59:52,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:59:53,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:59:53,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:59:53,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:59:53,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:59:53,001 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:59:53,002 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_dd6b640e-5332-4df7-90cd-8a5776a8da05/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a89472887c6d71cf4d1ec04e28f84fbc7b73a39 [2021-10-13 00:59:53,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:59:53,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:59:53,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:59:53,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:59:53,255 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:59:53,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2021-10-13 00:59:53,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/data/22d270155/4743f3cab8024113aa56f8c98001c82c/FLAGe29138750 [2021-10-13 00:59:53,820 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:59:53,821 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2021-10-13 00:59:53,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/data/22d270155/4743f3cab8024113aa56f8c98001c82c/FLAGe29138750 [2021-10-13 00:59:54,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/data/22d270155/4743f3cab8024113aa56f8c98001c82c [2021-10-13 00:59:54,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:59:54,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:59:54,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:59:54,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:59:54,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:59:54,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592aa016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54, skipping insertion in model container [2021-10-13 00:59:54,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:59:54,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:59:54,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:59:54,402 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:59:54,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:59:54,424 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:59:54,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54 WrapperNode [2021-10-13 00:59:54,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:59:54,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:59:54,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:59:54,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:59:54,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:59:54,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:59:54,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:59:54,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:59:54,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:59:54,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:59:54,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:59:54,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:59:54,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (1/1) ... [2021-10-13 00:59:54,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:54,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:54,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:59:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:59:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:59:54,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:59:54,702 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 00:59:54,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:59:54 BoogieIcfgContainer [2021-10-13 00:59:54,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:59:54,707 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:59:54,707 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:59:54,710 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:59:54,711 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:59:54,711 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:59:54" (1/3) ... [2021-10-13 00:59:54,712 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29c28691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:59:54, skipping insertion in model container [2021-10-13 00:59:54,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:59:54,713 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:54" (2/3) ... [2021-10-13 00:59:54,713 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29c28691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:59:54, skipping insertion in model container [2021-10-13 00:59:54,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:59:54,714 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:59:54" (3/3) ... [2021-10-13 00:59:54,715 INFO L389 chiAutomizerObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2021-10-13 00:59:54,772 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:59:54,772 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:59:54,772 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:59:54,772 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:59:54,772 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:59:54,772 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:59:54,773 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:59:54,773 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:59:54,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:59:54,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:59:54,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:59:54,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:59:54,809 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:59:54,809 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 00:59:54,809 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:59:54,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:59:54,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:59:54,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:59:54,810 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:59:54,811 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:59:54,811 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 00:59:54,817 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := 12;main_~y~0 := 0;main_~z~0 := main_#t~nondet0;havoc main_#t~nondet0; 6#L14-2true [2021-10-13 00:59:54,819 INFO L793 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~z~0 > 0);main_~x~0 := 1 + main_~x~0;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_~z~0 - 1; 6#L14-2true [2021-10-13 00:59:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:54,824 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 00:59:54,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:59:54,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867982668] [2021-10-13 00:59:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:54,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:59:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:59:54,913 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:59:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:59:54,938 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:59:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:54,942 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-13 00:59:54,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:59:54,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466151882] [2021-10-13 00:59:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:54,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:59:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:59:54,965 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:59:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:59:54,983 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:59:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-13 00:59:54,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:59:54,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414836992] [2021-10-13 00:59:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:54,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:59:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:59:55,002 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:59:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:59:55,018 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:59:55,157 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:59:55,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:59:55,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:59:55,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:59:55,159 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:59:55,159 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,159 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:59:55,159 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:59:55,159 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c_Iteration1_Loop [2021-10-13 00:59:55,160 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:59:55,160 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:59:55,190 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 00:59:55,198 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 00:59:55,205 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 00:59:55,281 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:59:55,281 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:59:55,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:55,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:55,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:59:55,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:59:55,296 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:59:55,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-13 00:59:55,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:55,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:55,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:59:55,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:59:55,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:59:55,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:59:55,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=-3}, {ULTIMATE.start_main_~y~0=-1}, {ULTIMATE.start_main_~y~0=3}] Lambdas: [1, 4, 1] Nus: [0, 1] [2021-10-13 00:59:55,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:55,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:55,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:55,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:59:55,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:59:55,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:59:55,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:55,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:55,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:55,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:59:55,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:59:55,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:59:55,503 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:59:55,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:55,509 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:59:55,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:59:55,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:59:55,510 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:59:55,510 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:59:55,510 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,510 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:59:55,510 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:59:55,510 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c_Iteration1_Loop [2021-10-13 00:59:55,510 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:59:55,511 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:59:55,512 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 00:59:55,516 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 00:59:55,523 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 00:59:55,562 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:59:55,566 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:59:55,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:55,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:55,582 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 00:59:55,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:59:55,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:59:55,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:59:55,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:59:55,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:59:55,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:59:55,594 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:59:55,595 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:59:55,601 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:59:55,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-13 00:59:55,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:55,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:55,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 00:59:55,627 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 00:59:55,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:59:55,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:59:55,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:59:55,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:59:55,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:59:55,637 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:59:55,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:59:55,647 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:59:55,649 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:59:55,651 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:59:55,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:59:55,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:55,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:55,666 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:59:55,666 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:59:55,667 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:59:55,667 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-10-13 00:59:55,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 00:59:55,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:55,691 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:59:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:59:55,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:59:55,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:59:55,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:59:55,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:55,742 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 00:59:55,756 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-13 00:59:55,757 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:59:55,799 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 18 transitions. Complement of second has 5 states. [2021-10-13 00:59:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:59:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:59:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 00:59:55,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2021-10-13 00:59:55,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:59:55,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-13 00:59:55,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:59:55,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-13 00:59:55,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:59:55,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-13 00:59:55,805 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:59:55,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2021-10-13 00:59:55,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:59:55,808 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:59:55,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:59:55,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:59:55,809 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:59:55,809 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:59:55,809 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:59:55,809 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:59:55,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:59:55,809 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:59:55,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:59:55,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:59:55 BoogieIcfgContainer [2021-10-13 00:59:55,814 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:59:55,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:59:55,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:59:55,815 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:59:55,815 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:59:54" (3/4) ... [2021-10-13 00:59:55,818 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:59:55,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:59:55,819 INFO L168 Benchmark]: Toolchain (without parser) took 1610.49 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 65.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:55,820 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:59:55,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.49 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 67.1 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:55,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.80 ms. Allocated memory is still 104.9 MB. Free memory was 67.1 MB in the beginning and 65.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:59:55,822 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 ms. Allocated memory is still 104.9 MB. Free memory was 65.9 MB in the beginning and 64.9 MB in the end (delta: 947.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:55,822 INFO L168 Benchmark]: RCFGBuilder took 224.11 ms. Allocated memory is still 104.9 MB. Free memory was 64.9 MB in the beginning and 57.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:55,823 INFO L168 Benchmark]: BuchiAutomizer took 1107.21 ms. Allocated memory is still 104.9 MB. Free memory was 57.1 MB in the beginning and 66.1 MB in the end (delta: -9.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:59:55,823 INFO L168 Benchmark]: Witness Printer took 3.32 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 65.7 MB in the end (delta: 427.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:59:55,827 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 83.9 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.49 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 67.1 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.80 ms. Allocated memory is still 104.9 MB. Free memory was 67.1 MB in the beginning and 65.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.64 ms. Allocated memory is still 104.9 MB. Free memory was 65.9 MB in the beginning and 64.9 MB in the end (delta: 947.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 224.11 ms. Allocated memory is still 104.9 MB. Free memory was 64.9 MB in the beginning and 57.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1107.21 ms. Allocated memory is still 104.9 MB. Free memory was 57.1 MB in the beginning and 66.1 MB in the end (delta: -9.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.32 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 65.7 MB in the end (delta: 427.0 kB). 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 z and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. 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: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:59:55,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-13 00:59:56,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd6b640e-5332-4df7-90cd-8a5776a8da05/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...