./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-dietlibc/strrchr.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_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/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_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-dietlibc/strrchr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/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_b199a625-980b-4368-b4a9-57aa87dcd0af/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 b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf --- 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 16:27:55,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:27:55,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:27:55,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:27:55,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:27:55,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:27:55,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:27:55,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:27:55,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:27:55,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:27:55,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:27:55,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:27:55,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:27:55,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:27:55,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:27:55,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:27:55,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:27:55,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:27:55,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:27:55,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:27:55,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:27:55,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:27:55,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:27:55,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:27:55,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:27:55,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:27:55,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:27:55,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:27:55,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:27:55,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:27:55,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:27:55,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:27:55,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:27:55,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:27:55,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:27:55,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:27:55,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:27:55,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:27:55,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:27:55,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:27:55,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:27:55,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 16:27:55,513 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:27:55,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:27:55,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:27:55,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:27:55,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:27:55,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:27:55,521 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:27:55,521 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 16:27:55,521 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 16:27:55,521 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 16:27:55,521 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 16:27:55,522 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 16:27:55,522 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 16:27:55,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:27:55,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:27:55,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:27:55,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:27:55,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 16:27:55,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 16:27:55,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 16:27:55,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:27:55,523 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 16:27:55,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:27:55,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 16:27:55,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:27:55,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:27:55,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:27:55,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:27:55,526 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 16:27:55,526 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_b199a625-980b-4368-b4a9-57aa87dcd0af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf [2022-12-13 16:27:55,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:27:55,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:27:55,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:27:55,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:27:55,756 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:27:55,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-dietlibc/strrchr.i [2022-12-13 16:27:58,357 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:27:58,499 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:27:58,499 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/sv-benchmarks/c/termination-dietlibc/strrchr.i [2022-12-13 16:27:58,506 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/data/c80ac133c/1e8e9490d89f427d86fe6c80b016f482/FLAG519268625 [2022-12-13 16:27:58,518 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/data/c80ac133c/1e8e9490d89f427d86fe6c80b016f482 [2022-12-13 16:27:58,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:27:58,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:27:58,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:27:58,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:27:58,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:27:58,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1623bc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58, skipping insertion in model container [2022-12-13 16:27:58,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:27:58,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:27:58,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:27:58,767 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:27:58,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:27:58,812 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:27:58,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58 WrapperNode [2022-12-13 16:27:58,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:27:58,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:27:58,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:27:58,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:27:58,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,846 INFO L138 Inliner]: procedures = 114, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2022-12-13 16:27:58,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:27:58,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:27:58,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:27:58,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:27:58,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,872 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:27:58,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:27:58,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:27:58,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:27:58,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (1/1) ... [2022-12-13 16:27:58,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:27:58,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:58,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:27:58,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 16:27:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:27:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:27:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:27:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:27:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:27:58,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:27:59,002 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:27:59,003 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:27:59,149 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:27:59,154 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:27:59,154 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 16:27:59,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:27:59 BoogieIcfgContainer [2022-12-13 16:27:59,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:27:59,156 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 16:27:59,156 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 16:27:59,159 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 16:27:59,159 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 16:27:59,159 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 04:27:58" (1/3) ... [2022-12-13 16:27:59,160 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@621a7490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 04:27:59, skipping insertion in model container [2022-12-13 16:27:59,160 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 16:27:59,160 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:27:58" (2/3) ... [2022-12-13 16:27:59,160 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@621a7490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 04:27:59, skipping insertion in model container [2022-12-13 16:27:59,160 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 16:27:59,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:27:59" (3/3) ... [2022-12-13 16:27:59,162 INFO L332 chiAutomizerObserver]: Analyzing ICFG strrchr.i [2022-12-13 16:27:59,200 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 16:27:59,200 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 16:27:59,201 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 16:27:59,201 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 16:27:59,201 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 16:27:59,201 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 16:27:59,201 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 16:27:59,201 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 16:27:59,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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 16:27:59,231 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-12-13 16:27:59,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 16:27:59,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 16:27:59,236 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 16:27:59,236 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 16:27:59,236 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 16:27:59,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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 16:27:59,238 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-12-13 16:27:59,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 16:27:59,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 16:27:59,239 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 16:27:59,239 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 16:27:59,246 INFO L748 eck$LassoCheckResult]: Stem: 21#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 10#L521true assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 11#L523-3true [2022-12-13 16:27:59,246 INFO L750 eck$LassoCheckResult]: Loop: 11#L523-3true assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 19#L523-2true main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 11#L523-3true [2022-12-13 16:27:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-12-13 16:27:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:59,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444398223] [2022-12-13 16:27:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:27:59,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:27:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:27:59,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:27:59,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:59,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1443, now seen corresponding path program 1 times [2022-12-13 16:27:59,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:59,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128286818] [2022-12-13 16:27:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:59,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:27:59,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:27:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:27:59,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:27:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash 28695942, now seen corresponding path program 1 times [2022-12-13 16:27:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:59,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727040288] [2022-12-13 16:27:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:59,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:27:59,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:27:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:27:59,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:27:59,597 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 16:27:59,598 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 16:27:59,598 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 16:27:59,598 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 16:27:59,598 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 16:27:59,598 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:27:59,598 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 16:27:59,599 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 16:27:59,599 INFO L133 ssoRankerPreferences]: Filename of dumped script: strrchr.i_Iteration1_Lasso [2022-12-13 16:27:59,599 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 16:27:59,599 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 16:27:59,613 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 16:27:59,620 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 16:27:59,622 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 16:27:59,626 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 16:27:59,628 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 16:27:59,630 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 16:27:59,631 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 16:27:59,634 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 16:27:59,636 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 16:27:59,754 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 16:27:59,937 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 16:27:59,941 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 16:27:59,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:27:59,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:59,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:27:59,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 16:27:59,946 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 16:27:59,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:27:59,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:27:59,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:27:59,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:27:59,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:27:59,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:27:59,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:27:59,962 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:27:59,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:27:59,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:27:59,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:59,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:27:59,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 16:27:59,980 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 16:27:59,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:27:59,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:27:59,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:27:59,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:27:59,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:27:59,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:27:59,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:27:59,993 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:27:59,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 16:27:59,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:27:59,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:59,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:27:59,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 16:27:59,999 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 16:28:00,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,013 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:00,013 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:00,017 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 16:28:00,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 16:28:00,023 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 16:28:00,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:00,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:00,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:00,036 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-12-13 16:28:00,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 16:28:00,043 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 16:28:00,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,053 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:00,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,054 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:00,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:00,056 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 16:28:00,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 16:28:00,062 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 16:28:00,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,072 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:00,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,073 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:00,073 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:00,074 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 16:28:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 16:28:00,080 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 16:28:00,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,093 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:00,093 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:00,103 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-12-13 16:28:00,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 16:28:00,109 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 16:28:00,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:00,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:00,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:00,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 16:28:00,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 16:28:00,128 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 16:28:00,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,143 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:00,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:00,149 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 16:28:00,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,153 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 16:28:00,155 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 16:28:00,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,170 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:00,170 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:00,177 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 16:28:00,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 16:28:00,184 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 16:28:00,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,197 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:00,197 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:00,202 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 16:28:00,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,206 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 16:28:00,209 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 16:28:00,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:00,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:00,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:00,221 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 16:28:00,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,226 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 16:28:00,228 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 16:28:00,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:00,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:00,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:00,240 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:00,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 16:28:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,244 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 16:28:00,246 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 16:28:00,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:00,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:00,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:00,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:00,262 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:00,262 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:00,282 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 16:28:00,315 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2022-12-13 16:28:00,315 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2022-12-13 16:28:00,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:00,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:00,340 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:00,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 16:28:00,342 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 16:28:00,353 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-12-13 16:28:00,354 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 16:28:00,354 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~in_len~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~in_len~0#1 Supporting invariants [] [2022-12-13 16:28:00,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 16:28:00,367 INFO L156 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2022-12-13 16:28:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:00,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:28:00,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:00,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:28:00,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:00,428 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 16:28:00,454 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 16:28:00,456 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:00,500 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 65 states and 97 transitions. Complement of second has 7 states. [2022-12-13 16:28:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 16:28:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2022-12-13 16:28:00,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 65 transitions. Stem has 3 letters. Loop has 2 letters. [2022-12-13 16:28:00,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 16:28:00,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 65 transitions. Stem has 5 letters. Loop has 2 letters. [2022-12-13 16:28:00,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 16:28:00,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 65 transitions. Stem has 3 letters. Loop has 4 letters. [2022-12-13 16:28:00,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 16:28:00,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 97 transitions. [2022-12-13 16:28:00,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:00,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 20 states and 26 transitions. [2022-12-13 16:28:00,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-12-13 16:28:00,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 16:28:00,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2022-12-13 16:28:00,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:28:00,517 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 16:28:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2022-12-13 16:28:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 16:28:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 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 16:28:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-12-13 16:28:00,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 16:28:00,535 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 16:28:00,535 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 16:28:00,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-12-13 16:28:00,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:00,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 16:28:00,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 16:28:00,536 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 16:28:00,536 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:00,537 INFO L748 eck$LassoCheckResult]: Stem: 161#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 149#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 150#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 153#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 142#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 143#L511-2 [2022-12-13 16:28:00,537 INFO L750 eck$LassoCheckResult]: Loop: 143#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 158#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 146#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 144#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 145#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 159#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 156#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 157#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 160#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 152#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 151#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 147#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 148#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 143#L511-2 [2022-12-13 16:28:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash 28695884, now seen corresponding path program 1 times [2022-12-13 16:28:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:00,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104008906] [2022-12-13 16:28:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:00,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:00,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 1 times [2022-12-13 16:28:00,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:00,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748662769] [2022-12-13 16:28:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:00,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:00,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash 149619625, now seen corresponding path program 1 times [2022-12-13 16:28:00,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:00,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687218020] [2022-12-13 16:28:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:00,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:00,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 16:28:00,944 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 16:28:00,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:00,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687218020] [2022-12-13 16:28:00,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687218020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:28:00,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:28:00,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:28:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989539663] [2022-12-13 16:28:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:28:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:28:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:28:01,161 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 16:28:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:01,267 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-13 16:28:01,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-12-13 16:28:01,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:01,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 21 states and 26 transitions. [2022-12-13 16:28:01,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-12-13 16:28:01,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 16:28:01,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 26 transitions. [2022-12-13 16:28:01,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:28:01,269 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-12-13 16:28:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 26 transitions. [2022-12-13 16:28:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-12-13 16:28:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 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 16:28:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-12-13 16:28:01,271 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-12-13 16:28:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:28:01,272 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-12-13 16:28:01,272 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 16:28:01,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2022-12-13 16:28:01,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:01,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 16:28:01,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 16:28:01,273 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:01,273 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:01,274 INFO L748 eck$LassoCheckResult]: Stem: 223#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 212#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 213#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 215#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 216#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 217#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 204#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 205#L511-2 [2022-12-13 16:28:01,274 INFO L750 eck$LassoCheckResult]: Loop: 205#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 220#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 208#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 206#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 207#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 221#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 218#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 219#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 222#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 214#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 211#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 209#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 210#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 205#L511-2 [2022-12-13 16:28:01,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1806996910, now seen corresponding path program 1 times [2022-12-13 16:28:01,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:01,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762419066] [2022-12-13 16:28:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:01,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:01,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:01,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 2 times [2022-12-13 16:28:01,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:01,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385106215] [2022-12-13 16:28:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:01,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:01,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:01,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:01,317 INFO L85 PathProgramCache]: Analyzing trace with hash 729709191, now seen corresponding path program 1 times [2022-12-13 16:28:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:01,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036269065] [2022-12-13 16:28:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:01,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036269065] [2022-12-13 16:28:01,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036269065] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:28:01,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318746112] [2022-12-13 16:28:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:01,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:01,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:01,631 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:01,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 16:28:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:01,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 16:28:01,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:01,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-13 16:28:02,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:28:02,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:28:02,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 17 [2022-12-13 16:28:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:02,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:28:02,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-12-13 16:28:02,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2022-12-13 16:28:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:02,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318746112] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:28:02,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:28:02,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2022-12-13 16:28:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174665957] [2022-12-13 16:28:02,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:28:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:02,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 16:28:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-12-13 16:28:02,607 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 7 Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 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 16:28:03,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:03,313 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-12-13 16:28:03,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 41 transitions. [2022-12-13 16:28:03,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:03,314 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 23 states and 28 transitions. [2022-12-13 16:28:03,314 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-12-13 16:28:03,314 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 16:28:03,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 28 transitions. [2022-12-13 16:28:03,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:28:03,314 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-12-13 16:28:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 28 transitions. [2022-12-13 16:28:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-12-13 16:28:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 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 16:28:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-12-13 16:28:03,316 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-12-13 16:28:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:28:03,316 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-12-13 16:28:03,316 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 16:28:03,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2022-12-13 16:28:03,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:03,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 16:28:03,317 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 16:28:03,317 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 16:28:03,317 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:03,317 INFO L748 eck$LassoCheckResult]: Stem: 444#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 432#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 433#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 435#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 436#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 437#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 438#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 445#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 424#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 425#L511-2 [2022-12-13 16:28:03,317 INFO L750 eck$LassoCheckResult]: Loop: 425#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 441#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 428#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 426#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 427#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 442#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 439#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 440#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 443#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 434#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 431#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 429#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 430#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 425#L511-2 [2022-12-13 16:28:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:03,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1357299088, now seen corresponding path program 2 times [2022-12-13 16:28:03,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:03,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333347751] [2022-12-13 16:28:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:03,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:03,329 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:03,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 3 times [2022-12-13 16:28:03,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:03,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682761116] [2022-12-13 16:28:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:03,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:03,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:03,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash -149966363, now seen corresponding path program 2 times [2022-12-13 16:28:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:03,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464535701] [2022-12-13 16:28:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:03,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464535701] [2022-12-13 16:28:03,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464535701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:28:03,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327487014] [2022-12-13 16:28:03,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:28:03,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:03,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:03,695 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:03,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 16:28:03,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:28:03,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:28:03,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 16:28:03,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:03,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-13 16:28:04,203 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-13 16:28:04,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 33 [2022-12-13 16:28:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:04,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:28:04,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2022-12-13 16:28:04,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 150 [2022-12-13 16:28:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:04,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327487014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:28:04,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:28:04,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 32 [2022-12-13 16:28:04,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92299792] [2022-12-13 16:28:04,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:28:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 16:28:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:28:04,895 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. cyclomatic complexity: 7 Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 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 16:28:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:05,924 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-12-13 16:28:05,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 54 transitions. [2022-12-13 16:28:05,925 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:05,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 25 states and 30 transitions. [2022-12-13 16:28:05,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-12-13 16:28:05,925 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 16:28:05,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2022-12-13 16:28:05,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:28:05,926 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-13 16:28:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2022-12-13 16:28:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-12-13 16:28:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 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 16:28:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-12-13 16:28:05,927 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-12-13 16:28:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 16:28:05,928 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-12-13 16:28:05,928 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 16:28:05,928 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 29 transitions. [2022-12-13 16:28:05,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:05,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 16:28:05,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 16:28:05,929 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-13 16:28:05,929 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:05,929 INFO L748 eck$LassoCheckResult]: Stem: 706#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 692#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 693#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 695#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 696#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 705#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 708#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 697#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 698#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 707#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 685#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 686#L511-2 [2022-12-13 16:28:05,929 INFO L750 eck$LassoCheckResult]: Loop: 686#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 702#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 689#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 687#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 688#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 703#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 700#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 701#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 704#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 699#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 694#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 690#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 691#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 686#L511-2 [2022-12-13 16:28:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1305578254, now seen corresponding path program 3 times [2022-12-13 16:28:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:05,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194414591] [2022-12-13 16:28:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:05,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:05,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:05,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:05,950 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 4 times [2022-12-13 16:28:05,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:05,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120941356] [2022-12-13 16:28:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:05,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:05,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash 590383555, now seen corresponding path program 3 times [2022-12-13 16:28:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112268895] [2022-12-13 16:28:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:05,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:06,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:06,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112268895] [2022-12-13 16:28:06,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112268895] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:28:06,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018747679] [2022-12-13 16:28:06,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:28:06,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:06,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:06,319 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:06,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 16:28:06,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 16:28:06,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:28:06,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 16:28:06,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:06,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-13 16:28:08,506 INFO L321 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2022-12-13 16:28:08,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 32 [2022-12-13 16:28:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:08,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:28:09,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 71 [2022-12-13 16:28:09,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:28:09,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 139 treesize of output 105 [2022-12-13 16:28:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:09,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018747679] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:28:09,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:28:09,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 43 [2022-12-13 16:28:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26371211] [2022-12-13 16:28:09,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:28:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 16:28:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1610, Unknown=6, NotChecked=0, Total=1806 [2022-12-13 16:28:09,470 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. cyclomatic complexity: 7 Second operand has 43 states, 43 states have (on average 1.558139534883721) internal successors, (67), 43 states have internal predecessors, (67), 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 16:28:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:17,584 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2022-12-13 16:28:17,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 91 transitions. [2022-12-13 16:28:17,585 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 26 [2022-12-13 16:28:17,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 63 states and 76 transitions. [2022-12-13 16:28:17,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2022-12-13 16:28:17,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2022-12-13 16:28:17,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 76 transitions. [2022-12-13 16:28:17,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:28:17,587 INFO L218 hiAutomatonCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-12-13 16:28:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 76 transitions. [2022-12-13 16:28:17,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2022-12-13 16:28:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 43 states have internal predecessors, (53), 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 16:28:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-12-13 16:28:17,590 INFO L240 hiAutomatonCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-12-13 16:28:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 16:28:17,591 INFO L428 stractBuchiCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-12-13 16:28:17,591 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 16:28:17,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 53 transitions. [2022-12-13 16:28:17,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 16:28:17,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 16:28:17,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 16:28:17,593 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2022-12-13 16:28:17,593 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:28:17,593 INFO L748 eck$LassoCheckResult]: Stem: 1049#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1034#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 1035#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 1037#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1038#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1039#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1040#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1067#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1066#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1053#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1055#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1057#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 1027#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 1028#L511-2 [2022-12-13 16:28:17,593 INFO L750 eck$LassoCheckResult]: Loop: 1028#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1044#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1050#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1070#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1069#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1068#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1042#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1043#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1056#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1052#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1051#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1032#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1033#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 1028#L511-2 [2022-12-13 16:28:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash -530195500, now seen corresponding path program 4 times [2022-12-13 16:28:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:17,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369587663] [2022-12-13 16:28:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:17,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:17,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 5 times [2022-12-13 16:28:17,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:17,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156136639] [2022-12-13 16:28:17,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:17,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:17,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:17,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash -897916383, now seen corresponding path program 4 times [2022-12-13 16:28:17,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:17,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271697546] [2022-12-13 16:28:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:17,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:17,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:28:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:28:17,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:28:18,804 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 16:28:18,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 16:28:18,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 16:28:18,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 16:28:18,804 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 16:28:18,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:18,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 16:28:18,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 16:28:18,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: strrchr.i_Iteration6_Lasso [2022-12-13 16:28:18,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 16:28:18,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 16:28:18,807 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 16:28:18,809 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 16:28:18,810 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 16:28:19,307 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 16:28:19,308 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 16:28:19,309 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 16:28:19,311 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 16:28:19,312 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 16:28:19,313 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 16:28:19,315 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 16:28:19,316 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 16:28:19,318 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 16:28:19,319 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 16:28:19,320 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 16:28:19,322 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 16:28:19,323 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 16:28:19,324 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 16:28:19,325 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 16:28:19,327 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 16:28:19,328 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 16:28:19,329 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 16:28:19,331 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 16:28:19,332 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 16:28:19,333 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 16:28:19,334 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 16:28:19,335 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 16:28:19,337 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 16:28:19,338 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 16:28:19,339 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 16:28:19,850 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 16:28:19,850 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 16:28:19,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:19,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:19,852 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:19,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 16:28:19,854 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 16:28:19,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:19,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:19,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:19,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:19,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:19,864 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:19,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:19,866 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:19,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 16:28:19,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:19,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:19,869 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:19,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 16:28:19,872 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 16:28:19,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:19,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 16:28:19,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:19,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:19,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:19,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 16:28:19,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 16:28:19,883 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:19,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-12-13 16:28:19,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:19,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:19,887 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:19,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 16:28:19,889 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 16:28:19,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:19,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:19,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:19,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:19,900 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:19,900 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:19,903 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:19,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 16:28:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:19,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:19,907 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:19,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 16:28:19,909 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 16:28:19,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:19,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:19,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:19,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:19,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:19,920 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:19,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 16:28:19,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 16:28:19,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:19,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:19,926 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:19,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 16:28:19,929 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 16:28:19,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 16:28:19,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 16:28:19,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 16:28:19,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 16:28:19,943 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 16:28:19,943 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 16:28:19,958 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 16:28:19,987 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2022-12-13 16:28:19,987 INFO L444 ModelExtractionUtils]: 12 out of 31 variables were initially zero. Simplification set additionally 16 variables to zero. [2022-12-13 16:28:19,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 16:28:19,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:19,989 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 16:28:19,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 16:28:19,990 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 16:28:20,001 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-12-13 16:28:20,002 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 16:28:20,002 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_strrchr_~t#1.base)_1, ULTIMATE.start_strrchr_~t#1.offset) = 1*v_rep(select #length ULTIMATE.start_strrchr_~t#1.base)_1 - 1*ULTIMATE.start_strrchr_~t#1.offset Supporting invariants [] [2022-12-13 16:28:20,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 16:28:20,030 INFO L156 tatePredicateManager]: 10 out of 10 supporting invariants were superfluous and have been removed [2022-12-13 16:28:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:20,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:28:20,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:20,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 16:28:20,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:20,154 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 16:28:20,154 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-12-13 16:28:20,155 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 44 states and 53 transitions. cyclomatic complexity: 11 Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 16:28:20,184 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 44 states and 53 transitions. cyclomatic complexity: 11. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 65 states and 83 transitions. Complement of second has 6 states. [2022-12-13 16:28:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 16:28:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 16:28:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2022-12-13 16:28:20,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 13 letters. Loop has 13 letters. [2022-12-13 16:28:20,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 16:28:20,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 26 letters. Loop has 13 letters. [2022-12-13 16:28:20,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 16:28:20,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 13 letters. Loop has 26 letters. [2022-12-13 16:28:20,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 16:28:20,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 83 transitions. [2022-12-13 16:28:20,187 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 16:28:20,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 0 states and 0 transitions. [2022-12-13 16:28:20,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 16:28:20,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 16:28:20,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 16:28:20,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:28:20,188 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 16:28:20,188 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 16:28:20,188 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 16:28:20,188 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 16:28:20,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 16:28:20,188 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 16:28:20,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 16:28:20,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 04:28:20 BoogieIcfgContainer [2022-12-13 16:28:20,195 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 16:28:20,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:28:20,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:28:20,195 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:28:20,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:27:59" (3/4) ... [2022-12-13 16:28:20,198 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 16:28:20,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:28:20,199 INFO L158 Benchmark]: Toolchain (without parser) took 21678.28ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 100.7MB in the beginning and 76.2MB in the end (delta: 24.6MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2022-12-13 16:28:20,199 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:28:20,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.38ms. Allocated memory is still 138.4MB. Free memory was 100.4MB in the beginning and 84.3MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 16:28:20,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.61ms. Allocated memory is still 138.4MB. Free memory was 84.3MB in the beginning and 82.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:28:20,200 INFO L158 Benchmark]: Boogie Preprocessor took 30.09ms. Allocated memory is still 138.4MB. Free memory was 82.6MB in the beginning and 81.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:28:20,200 INFO L158 Benchmark]: RCFGBuilder took 277.81ms. Allocated memory is still 138.4MB. Free memory was 80.7MB in the beginning and 67.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 16:28:20,201 INFO L158 Benchmark]: BuchiAutomizer took 21038.84ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 67.6MB in the beginning and 77.2MB in the end (delta: -9.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-12-13 16:28:20,201 INFO L158 Benchmark]: Witness Printer took 3.33ms. Allocated memory is still 167.8MB. Free memory was 77.2MB in the beginning and 76.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:28:20,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.38ms. Allocated memory is still 138.4MB. Free memory was 100.4MB in the beginning and 84.3MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.61ms. Allocated memory is still 138.4MB. Free memory was 84.3MB in the beginning and 82.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.09ms. Allocated memory is still 138.4MB. Free memory was 82.6MB in the beginning and 81.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 277.81ms. Allocated memory is still 138.4MB. Free memory was 80.7MB in the beginning and 67.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 21038.84ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 67.6MB in the beginning and 77.2MB in the end (delta: -9.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Witness Printer took 3.33ms. Allocated memory is still 167.8MB. Free memory was 77.2MB in the beginning and 76.2MB in the end (delta: 1.0MB). 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 6 terminating modules (4 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + in_len and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[t] + -1 * t and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 43 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 21.0s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 10.6s. Construction of modules took 3.8s. Büchi inclusion checks took 6.4s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations. 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 578 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 576 mSDsluCounter, 576 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 494 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1455 IncrementalHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 82 mSDtfsCounter, 1455 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc4 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital158 mio100 ax100 hnf100 lsp97 ukn84 mio100 lsp49 div162 bol100 ite100 ukn100 eq160 hnf92 smp73 dnf150 smp85 tf100 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 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 16:28:20,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 16:28:20,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 16:28:20,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 16:28:20,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 16:28:21,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199a625-980b-4368-b4a9-57aa87dcd0af/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