./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8 --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 168748c0c54c019ef253d55ab380d3a197e2401ba990ef8210cb41b73a41cb13 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:50:20,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:50:20,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:50:20,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:50:20,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:50:20,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:50:20,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:50:20,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:50:20,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:50:20,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:50:20,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:50:20,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:50:20,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:50:20,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:50:20,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:50:20,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:50:20,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:50:20,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:50:20,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:50:20,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:50:20,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:50:20,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:50:20,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:50:20,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:50:20,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:50:20,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:50:20,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:50:20,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:50:20,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:50:20,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:50:20,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:50:20,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:50:20,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:50:20,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:50:20,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:50:20,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:50:20,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:50:20,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:50:20,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:50:20,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:50:20,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:50:20,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 21:50:20,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:50:20,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:50:20,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:50:20,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:50:20,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:50:20,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:50:20,632 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:50:20,632 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 21:50:20,632 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 21:50:20,632 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 21:50:20,632 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 21:50:20,632 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 21:50:20,632 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 21:50:20,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:50:20,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:50:20,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:50:20,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:50:20,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 21:50:20,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 21:50:20,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 21:50:20,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:50:20,634 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 21:50:20,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:50:20,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 21:50:20,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:50:20,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:50:20,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:50:20,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:50:20,636 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 21:50:20,636 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_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 168748c0c54c019ef253d55ab380d3a197e2401ba990ef8210cb41b73a41cb13 [2022-12-13 21:50:20,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:50:20,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:50:20,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:50:20,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:50:20,840 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:50:20,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2022-12-13 21:50:23,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:50:23,633 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:50:23,633 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2022-12-13 21:50:23,642 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/data/d7da11a27/05660964bf3f49c081b773d662cd0af6/FLAG44a3c4232 [2022-12-13 21:50:23,655 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/data/d7da11a27/05660964bf3f49c081b773d662cd0af6 [2022-12-13 21:50:23,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:50:23,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:50:23,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:50:23,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:50:23,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:50:23,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:23,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214355dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23, skipping insertion in model container [2022-12-13 21:50:23,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:23,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:50:23,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:50:23,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:50:23,920 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:50:23,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:50:23,960 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:50:23,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23 WrapperNode [2022-12-13 21:50:23,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:50:23,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:50:23,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:50:23,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:50:23,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:23,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:23,988 INFO L138 Inliner]: procedures = 152, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-12-13 21:50:23,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:50:23,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:50:23,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:50:23,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:50:23,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:23,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:23,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:23,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:24,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:24,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:24,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:24,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:24,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:50:24,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:50:24,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:50:24,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:50:24,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (1/1) ... [2022-12-13 21:50:24,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:50:24,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:24,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:50:24,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 21:50:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:50:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:50:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:50:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:50:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:50:24,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:50:24,136 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:50:24,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:50:24,230 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:50:24,234 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:50:24,234 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:50:24,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:50:24 BoogieIcfgContainer [2022-12-13 21:50:24,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:50:24,236 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 21:50:24,236 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 21:50:24,239 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 21:50:24,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:50:24,240 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 09:50:23" (1/3) ... [2022-12-13 21:50:24,241 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d001d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:50:24, skipping insertion in model container [2022-12-13 21:50:24,241 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:50:24,241 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:50:23" (2/3) ... [2022-12-13 21:50:24,242 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d001d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:50:24, skipping insertion in model container [2022-12-13 21:50:24,242 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:50:24,242 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:50:24" (3/3) ... [2022-12-13 21:50:24,244 INFO L332 chiAutomizerObserver]: Analyzing ICFG cstrlen_reverse_alloca.i [2022-12-13 21:50:24,297 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 21:50:24,297 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 21:50:24,298 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 21:50:24,298 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 21:50:24,298 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 21:50:24,298 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 21:50:24,298 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 21:50:24,298 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 21:50:24,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-12-13 21:50:24,320 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:50:24,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:50:24,320 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:50:24,324 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-12-13 21:50:24,324 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:50:24,325 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 21:50:24,325 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-12-13 21:50:24,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:50:24,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:50:24,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:50:24,335 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-12-13 21:50:24,335 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:50:24,341 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet207#1, main_#t~malloc208#1.base, main_#t~malloc208#1.offset, main_#t~ret209#1, main_~length1~0#1, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset;main_~length1~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 11#L373true assume !(main_~length1~0#1 < 1); 9#L373-2true call main_#t~malloc208#1.base, main_#t~malloc208#1.offset := #Ultimate.allocOnStack(main_~length1~0#1 % 18446744073709551616);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_#t~malloc208#1.base, main_#t~malloc208#1.offset;call write~int(0, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, 1);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset + (main_~length1~0#1 - 1);assume { :begin_inline_cstrlen } true;cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset;havoc cstrlen_#res#1;havoc cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset, cstrlen_#t~mem205#1, cstrlen_~s#1.base, cstrlen_~s#1.offset, cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~s#1.base, cstrlen_~s#1.offset := cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_~s#1.base, cstrlen_~s#1.offset; 2#L367-3true [2022-12-13 21:50:24,342 INFO L750 eck$LassoCheckResult]: Loop: 2#L367-3true call cstrlen_#t~mem205#1 := read~int(cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset, 1); 10#L367-1true assume !!(0 != cstrlen_#t~mem205#1);havoc cstrlen_#t~mem205#1;cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset := cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset - 1;havoc cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset; 2#L367-3true [2022-12-13 21:50:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-12-13 21:50:24,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:24,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254140690] [2022-12-13 21:50:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:50:24,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:50:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:50:24,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:50:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2022-12-13 21:50:24,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:24,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165708521] [2022-12-13 21:50:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:50:24,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:50:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:50:24,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:50:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2022-12-13 21:50:24,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:24,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660734576] [2022-12-13 21:50:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:50:24,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:50:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:50:24,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:50:24,898 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:50:24,899 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:50:24,899 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:50:24,899 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:50:24,899 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:50:24,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:50:24,900 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:50:24,900 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:50:24,900 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_reverse_alloca.i_Iteration1_Lasso [2022-12-13 21:50:24,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:50:24,900 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:50:24,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,137 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,140 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,141 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,143 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,145 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,147 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,148 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,151 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,153 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:50:25,446 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:50:25,449 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:50:25,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:50:25,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:25,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:50:25,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 21:50:25,453 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 [2022-12-13 21:50:25,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:50:25,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:50:25,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:50:25,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:50:25,473 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 21:50:25,473 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 21:50:25,483 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:50:25,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:50:25,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:50:25,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:25,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:50:25,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 21:50:25,491 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 [2022-12-13 21:50:25,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:50:25,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:50:25,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:50:25,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:50:25,510 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 21:50:25,510 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 21:50:25,525 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:50:25,549 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-12-13 21:50:25,549 INFO L444 ModelExtractionUtils]: 17 out of 31 variables were initially zero. Simplification set additionally 11 variables to zero. [2022-12-13 21:50:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:50:25,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:25,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:50:25,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 21:50:25,583 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:50:25,597 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-12-13 21:50:25,597 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:50:25,597 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0#1.offset) = 2*ULTIMATE.start_cstrlen_~p~0#1.offset + 1 Supporting invariants [] [2022-12-13 21:50:25,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:50:25,616 INFO L156 tatePredicateManager]: 5 out of 5 supporting invariants were superfluous and have been removed [2022-12-13 21:50:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:25,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:50:25,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:50:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:25,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:50:25,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:50:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:25,702 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 21:50:25,704 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-13 21:50:25,733 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 23 states and 26 transitions. Complement of second has 5 states. [2022-12-13 21:50:25,735 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 [2022-12-13 21:50:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-13 21:50:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-12-13 21:50:25,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2022-12-13 21:50:25,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:50:25,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 2 letters. [2022-12-13 21:50:25,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:50:25,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 4 letters. [2022-12-13 21:50:25,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:50:25,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 26 transitions. [2022-12-13 21:50:25,742 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:50:25,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2022-12-13 21:50:25,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 21:50:25,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 21:50:25,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 21:50:25,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:50:25,745 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:50:25,745 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:50:25,745 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:50:25,745 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 21:50:25,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 21:50:25,745 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:50:25,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 21:50:25,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 09:50:25 BoogieIcfgContainer [2022-12-13 21:50:25,750 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 21:50:25,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:50:25,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:50:25,751 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:50:25,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:50:24" (3/4) ... [2022-12-13 21:50:25,753 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 21:50:25,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:50:25,754 INFO L158 Benchmark]: Toolchain (without parser) took 2094.29ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 94.2MB in the beginning and 106.7MB in the end (delta: -12.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 21:50:25,754 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:50:25,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.62ms. Allocated memory is still 130.0MB. Free memory was 94.2MB in the beginning and 77.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 21:50:25,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.54ms. Allocated memory is still 130.0MB. Free memory was 77.0MB in the beginning and 75.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:50:25,755 INFO L158 Benchmark]: Boogie Preprocessor took 15.62ms. Allocated memory is still 130.0MB. Free memory was 74.9MB in the beginning and 73.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:50:25,755 INFO L158 Benchmark]: RCFGBuilder took 230.44ms. Allocated memory is still 130.0MB. Free memory was 73.6MB in the beginning and 63.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 21:50:25,756 INFO L158 Benchmark]: BuchiAutomizer took 1514.29ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 63.5MB in the beginning and 106.7MB in the end (delta: -43.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:50:25,756 INFO L158 Benchmark]: Witness Printer took 2.61ms. Allocated memory is still 165.7MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:50:25,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.62ms. Allocated memory is still 130.0MB. Free memory was 94.2MB in the beginning and 77.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.54ms. Allocated memory is still 130.0MB. Free memory was 77.0MB in the beginning and 75.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.62ms. Allocated memory is still 130.0MB. Free memory was 74.9MB in the beginning and 73.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 230.44ms. Allocated memory is still 130.0MB. Free memory was 73.6MB in the beginning and 63.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1514.29ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 63.5MB in the beginning and 106.7MB in the end (delta: -43.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.61ms. Allocated memory is still 165.7MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. * 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 2 * p + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 9 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital122 mio100 ax100 hnf100 lsp95 ukn103 mio100 lsp54 div153 bol100 ite100 ukn100 eq170 hnf91 smp76 dnf100 smp100 tf100 neg99 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 6 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 21:50:25,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 21:50:25,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7358552e-085b-4c12-9a5b-3a01c37cee60/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE