./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/id_build.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:05:12,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:05:12,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:05:12,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:05:12,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:05:12,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:05:12,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:05:12,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:05:12,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:05:12,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:05:12,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:05:12,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:05:12,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:05:12,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:05:12,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:05:12,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:05:12,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:05:12,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:05:12,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:05:12,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:05:12,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:05:12,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:05:12,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:05:12,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:05:12,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:05:12,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:05:12,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:05:12,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:05:12,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:05:12,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:05:12,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:05:12,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:05:12,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:05:12,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:05:12,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:05:12,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:05:12,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:05:12,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:05:12,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:05:12,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:05:12,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:05:12,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:05:13,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:05:13,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:05:13,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:05:13,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:05:13,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:05:13,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:05:13,025 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:05:13,025 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:05:13,025 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:05:13,026 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:05:13,027 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:05:13,028 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:05:13,028 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:05:13,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:05:13,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:05:13,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:05:13,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:05:13,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:05:13,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:05:13,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:05:13,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:05:13,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:05:13,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:05:13,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:05:13,032 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:05:13,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:05:13,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:05:13,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:05:13,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:05:13,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:05:13,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:05:13,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:05:13,036 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:05:13,037 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_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 [2021-10-28 23:05:13,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:05:13,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:05:13,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:05:13,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:05:13,414 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:05:13,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-invgen/id_build.i [2021-10-28 23:05:13,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/data/169cefad0/69c6f59872d641419a15f43e8035fe15/FLAGa53166b61 [2021-10-28 23:05:14,067 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:05:14,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/sv-benchmarks/c/loop-invgen/id_build.i [2021-10-28 23:05:14,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/data/169cefad0/69c6f59872d641419a15f43e8035fe15/FLAGa53166b61 [2021-10-28 23:05:14,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/data/169cefad0/69c6f59872d641419a15f43e8035fe15 [2021-10-28 23:05:14,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:05:14,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:05:14,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:14,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:05:14,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:05:14,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3c07eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14, skipping insertion in model container [2021-10-28 23:05:14,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:05:14,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:05:14,657 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-28 23:05:14,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:14,700 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:05:14,713 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-28 23:05:14,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:14,734 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:05:14,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14 WrapperNode [2021-10-28 23:05:14,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:14,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:14,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:05:14,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:05:14,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:14,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:05:14,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:05:14,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:05:14,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:05:14,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:05:14,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:05:14,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:05:14,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (1/1) ... [2021-10-28 23:05:14,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:14,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:14,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:14,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:05:14,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:05:14,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:05:14,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:05:14,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:05:15,226 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:05:15,227 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 23:05:15,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:15 BoogieIcfgContainer [2021-10-28 23:05:15,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:05:15,231 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:05:15,231 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:05:15,235 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:05:15,236 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:05:15,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:05:14" (1/3) ... [2021-10-28 23:05:15,239 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e95c5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:05:15, skipping insertion in model container [2021-10-28 23:05:15,239 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:05:15,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:14" (2/3) ... [2021-10-28 23:05:15,240 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e95c5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:05:15, skipping insertion in model container [2021-10-28 23:05:15,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:05:15,241 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:15" (3/3) ... [2021-10-28 23:05:15,243 INFO L389 chiAutomizerObserver]: Analyzing ICFG id_build.i [2021-10-28 23:05:15,322 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:05:15,322 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:05:15,322 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:05:15,323 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:05:15,323 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:05:15,323 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:05:15,323 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:05:15,324 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:05:15,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 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) [2021-10-28 23:05:15,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:05:15,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:15,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:15,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:15,380 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:05:15,380 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:05:15,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 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) [2021-10-28 23:05:15,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:05:15,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:15,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:15,384 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:15,385 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:05:15,393 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 15#L27-3true [2021-10-28 23:05:15,394 INFO L793 eck$LassoCheckResult]: Loop: 15#L27-3true assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 8#L28-2true assume !(main_~j~0 < 8); 11#L27-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 15#L27-3true [2021-10-28 23:05:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 23:05:15,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:15,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343683732] [2021-10-28 23:05:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:15,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:15,528 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:15,570 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:15,575 INFO L85 PathProgramCache]: Analyzing trace with hash 39940, now seen corresponding path program 1 times [2021-10-28 23:05:15,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:15,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747571101] [2021-10-28 23:05:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:15,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:15,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:15,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747571101] [2021-10-28 23:05:15,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747571101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:15,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:15,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:05:15,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463588095] [2021-10-28 23:05:15,707 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:15,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:05:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:05:15,730 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:15,756 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-28 23:05:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:05:15,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 23 transitions. [2021-10-28 23:05:15,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:05:15,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 15 transitions. [2021-10-28 23:05:15,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 23:05:15,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 23:05:15,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2021-10-28 23:05:15,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:15,768 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-28 23:05:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2021-10-28 23:05:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2021-10-28 23:05:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-28 23:05:15,814 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 23:05:15,814 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 23:05:15,814 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:05:15,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-28 23:05:15,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:05:15,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:15,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:15,816 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:15,816 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:15,817 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 49#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 53#L27-3 [2021-10-28 23:05:15,817 INFO L793 eck$LassoCheckResult]: Loop: 53#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 54#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 46#L18 assume !(0 == __VERIFIER_assert_~cond); 47#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 50#L18-3 assume !(0 == __VERIFIER_assert_~cond); 51#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 52#L28-2 assume !(main_~j~0 < 8); 55#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 53#L27-3 [2021-10-28 23:05:15,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 23:05:15,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:15,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867698143] [2021-10-28 23:05:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:15,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:15,849 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:15,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:15,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2021355157, now seen corresponding path program 1 times [2021-10-28 23:05:15,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:15,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062813566] [2021-10-28 23:05:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:15,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:15,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:15,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062813566] [2021-10-28 23:05:15,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062813566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:15,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353783052] [2021-10-28 23:05:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:15,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:15,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:15,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:05:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:16,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:05:16,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:16,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353783052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:16,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:16,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 23:05:16,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460245102] [2021-10-28 23:05:16,114 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:16,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:05:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:05:16,116 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:16,139 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 23:05:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:05:16,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2021-10-28 23:05:16,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-28 23:05:16,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2021-10-28 23:05:16,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-28 23:05:16,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-28 23:05:16,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2021-10-28 23:05:16,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:16,146 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-28 23:05:16,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2021-10-28 23:05:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-28 23:05:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-28 23:05:16,150 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 23:05:16,150 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 23:05:16,150 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:05:16,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-10-28 23:05:16,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 23:05:16,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:16,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:16,152 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:16,152 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 1, 1, 1] [2021-10-28 23:05:16,153 INFO L791 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 106#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 111#L27-3 [2021-10-28 23:05:16,153 INFO L793 eck$LassoCheckResult]: Loop: 111#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 112#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 117#L18 assume !(0 == __VERIFIER_assert_~cond); 116#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 115#L18-3 assume !(0 == __VERIFIER_assert_~cond); 107#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 108#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 103#L18 assume !(0 == __VERIFIER_assert_~cond); 104#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 109#L18-3 assume !(0 == __VERIFIER_assert_~cond); 110#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 114#L28-2 assume !(main_~j~0 < 8); 113#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 111#L27-3 [2021-10-28 23:05:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 23:05:16,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:16,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447200451] [2021-10-28 23:05:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:16,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:16,169 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:16,185 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:16,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash -51059612, now seen corresponding path program 2 times [2021-10-28 23:05:16,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:16,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691227448] [2021-10-28 23:05:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:16,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:16,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:16,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691227448] [2021-10-28 23:05:16,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691227448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:16,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827093295] [2021-10-28 23:05:16,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:05:16,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:16,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:16,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:16,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:05:16,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:05:16,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:05:16,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:05:16,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:16,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827093295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:16,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:16,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 23:05:16,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053903856] [2021-10-28 23:05:16,512 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:16,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:05:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:16,514 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:16,543 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-28 23:05:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:05:16,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 25 transitions. [2021-10-28 23:05:16,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2021-10-28 23:05:16,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 25 transitions. [2021-10-28 23:05:16,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 23:05:16,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:05:16,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2021-10-28 23:05:16,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:16,549 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-28 23:05:16,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2021-10-28 23:05:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-10-28 23:05:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.05) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-28 23:05:16,554 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-28 23:05:16,554 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-28 23:05:16,555 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:05:16,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 21 transitions. [2021-10-28 23:05:16,556 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 23:05:16,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:16,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:16,560 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:16,561 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 3, 3, 1, 1, 1] [2021-10-28 23:05:16,561 INFO L791 eck$LassoCheckResult]: Stem: 188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 189#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 194#L27-3 [2021-10-28 23:05:16,561 INFO L793 eck$LassoCheckResult]: Loop: 194#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 195#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 205#L18 assume !(0 == __VERIFIER_assert_~cond); 204#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 203#L18-3 assume !(0 == __VERIFIER_assert_~cond); 191#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 192#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 186#L18 assume !(0 == __VERIFIER_assert_~cond); 187#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 190#L18-3 assume !(0 == __VERIFIER_assert_~cond); 193#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 202#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 198#L18 assume !(0 == __VERIFIER_assert_~cond); 201#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 200#L18-3 assume !(0 == __VERIFIER_assert_~cond); 199#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 197#L28-2 assume !(main_~j~0 < 8); 196#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 194#L27-3 [2021-10-28 23:05:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 23:05:16,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:16,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530851197] [2021-10-28 23:05:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:16,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:16,576 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:16,589 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash 63866123, now seen corresponding path program 3 times [2021-10-28 23:05:16,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:16,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445969897] [2021-10-28 23:05:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:16,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:16,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:16,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445969897] [2021-10-28 23:05:16,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445969897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:16,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128013701] [2021-10-28 23:05:16,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:05:16,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:16,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:16,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:16,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:05:16,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 23:05:16,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:05:16,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:05:16,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:16,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128013701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:16,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:16,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 23:05:16,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98001113] [2021-10-28 23:05:16,896 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:16,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:05:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:16,898 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2021-10-28 23:05:16,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:16,926 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-28 23:05:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:05:16,927 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 30 transitions. [2021-10-28 23:05:16,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-10-28 23:05:16,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 30 transitions. [2021-10-28 23:05:16,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 23:05:16,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 23:05:16,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 30 transitions. [2021-10-28 23:05:16,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:16,931 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-28 23:05:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 30 transitions. [2021-10-28 23:05:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-10-28 23:05:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 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) [2021-10-28 23:05:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-28 23:05:16,935 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 23:05:16,935 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 23:05:16,935 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:05:16,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2021-10-28 23:05:16,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-28 23:05:16,937 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:16,937 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:16,937 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:16,938 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 4, 4, 1, 1, 1] [2021-10-28 23:05:16,938 INFO L791 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 298#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 303#L27-3 [2021-10-28 23:05:16,938 INFO L793 eck$LassoCheckResult]: Loop: 303#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 304#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 319#L18 assume !(0 == __VERIFIER_assert_~cond); 318#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 317#L18-3 assume !(0 == __VERIFIER_assert_~cond); 300#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 301#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 295#L18 assume !(0 == __VERIFIER_assert_~cond); 296#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 299#L18-3 assume !(0 == __VERIFIER_assert_~cond); 302#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 316#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 315#L18 assume !(0 == __VERIFIER_assert_~cond); 314#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 313#L18-3 assume !(0 == __VERIFIER_assert_~cond); 312#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 311#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 307#L18 assume !(0 == __VERIFIER_assert_~cond); 310#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 309#L18-3 assume !(0 == __VERIFIER_assert_~cond); 308#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 306#L28-2 assume !(main_~j~0 < 8); 305#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 303#L27-3 [2021-10-28 23:05:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 23:05:16,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:16,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036527639] [2021-10-28 23:05:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:16,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:16,950 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:16,962 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2131610428, now seen corresponding path program 4 times [2021-10-28 23:05:16,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:16,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337783544] [2021-10-28 23:05:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:16,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:17,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:17,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337783544] [2021-10-28 23:05:17,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337783544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:17,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84779396] [2021-10-28 23:05:17,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:05:17,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:17,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:17,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:05:17,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:05:17,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:05:17,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:05:17,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:17,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84779396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:17,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:17,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:05:17,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227548697] [2021-10-28 23:05:17,372 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:17,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:05:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:05:17,376 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. cyclomatic complexity: 2 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:17,427 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-28 23:05:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:05:17,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 35 transitions. [2021-10-28 23:05:17,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-28 23:05:17,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 35 transitions. [2021-10-28 23:05:17,439 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-28 23:05:17,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-28 23:05:17,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 35 transitions. [2021-10-28 23:05:17,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:17,441 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-10-28 23:05:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 35 transitions. [2021-10-28 23:05:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-28 23:05:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-28 23:05:17,452 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-28 23:05:17,453 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-28 23:05:17,453 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:05:17,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 31 transitions. [2021-10-28 23:05:17,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-28 23:05:17,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:17,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:17,463 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:17,464 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 5, 5, 5, 1, 1, 1] [2021-10-28 23:05:17,464 INFO L791 eck$LassoCheckResult]: Stem: 432#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 433#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 438#L27-3 [2021-10-28 23:05:17,465 INFO L793 eck$LassoCheckResult]: Loop: 438#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 439#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 459#L18 assume !(0 == __VERIFIER_assert_~cond); 458#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 457#L18-3 assume !(0 == __VERIFIER_assert_~cond); 435#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 436#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 430#L18 assume !(0 == __VERIFIER_assert_~cond); 431#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 434#L18-3 assume !(0 == __VERIFIER_assert_~cond); 437#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 456#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 455#L18 assume !(0 == __VERIFIER_assert_~cond); 454#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 453#L18-3 assume !(0 == __VERIFIER_assert_~cond); 452#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 451#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 450#L18 assume !(0 == __VERIFIER_assert_~cond); 449#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 448#L18-3 assume !(0 == __VERIFIER_assert_~cond); 447#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 446#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 442#L18 assume !(0 == __VERIFIER_assert_~cond); 445#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 444#L18-3 assume !(0 == __VERIFIER_assert_~cond); 443#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 441#L28-2 assume !(main_~j~0 < 8); 440#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 438#L27-3 [2021-10-28 23:05:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-28 23:05:17,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:17,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108308250] [2021-10-28 23:05:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:17,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:17,488 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:17,525 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1653313365, now seen corresponding path program 5 times [2021-10-28 23:05:17,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:17,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62590373] [2021-10-28 23:05:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:17,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:17,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:17,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62590373] [2021-10-28 23:05:17,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62590373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:17,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488032539] [2021-10-28 23:05:17,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:05:17,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:17,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:17,684 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:17,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:05:17,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 23:05:17,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:05:17,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:05:17,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:17,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488032539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:17,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:17,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 23:05:17,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472478333] [2021-10-28 23:05:17,947 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:17,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:05:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:17,949 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:17,989 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-28 23:05:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:05:17,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 40 transitions. [2021-10-28 23:05:17,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 23:05:17,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 40 transitions. [2021-10-28 23:05:17,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 23:05:17,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-28 23:05:17,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 40 transitions. [2021-10-28 23:05:17,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:17,998 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-28 23:05:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 40 transitions. [2021-10-28 23:05:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-28 23:05:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 34 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) [2021-10-28 23:05:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-28 23:05:18,010 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-28 23:05:18,010 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-28 23:05:18,011 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:05:18,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 36 transitions. [2021-10-28 23:05:18,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-28 23:05:18,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:18,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:18,015 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:18,016 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 6, 6, 6, 1, 1, 1] [2021-10-28 23:05:18,016 INFO L791 eck$LassoCheckResult]: Stem: 593#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 594#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 599#L27-3 [2021-10-28 23:05:18,018 INFO L793 eck$LassoCheckResult]: Loop: 599#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 600#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 625#L18 assume !(0 == __VERIFIER_assert_~cond); 624#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 623#L18-3 assume !(0 == __VERIFIER_assert_~cond); 596#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 597#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 591#L18 assume !(0 == __VERIFIER_assert_~cond); 592#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 595#L18-3 assume !(0 == __VERIFIER_assert_~cond); 598#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 622#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 621#L18 assume !(0 == __VERIFIER_assert_~cond); 620#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 619#L18-3 assume !(0 == __VERIFIER_assert_~cond); 618#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 617#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 616#L18 assume !(0 == __VERIFIER_assert_~cond); 615#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 614#L18-3 assume !(0 == __VERIFIER_assert_~cond); 613#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 612#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 611#L18 assume !(0 == __VERIFIER_assert_~cond); 610#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 609#L18-3 assume !(0 == __VERIFIER_assert_~cond); 608#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 607#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 603#L18 assume !(0 == __VERIFIER_assert_~cond); 606#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 605#L18-3 assume !(0 == __VERIFIER_assert_~cond); 604#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 602#L28-2 assume !(main_~j~0 < 8); 601#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 599#L27-3 [2021-10-28 23:05:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:18,019 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-28 23:05:18,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:18,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110120781] [2021-10-28 23:05:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:18,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:18,043 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:18,064 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:18,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash 978226468, now seen corresponding path program 6 times [2021-10-28 23:05:18,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:18,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912269804] [2021-10-28 23:05:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:18,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:18,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:18,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912269804] [2021-10-28 23:05:18,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912269804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:18,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290455749] [2021-10-28 23:05:18,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:05:18,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:18,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:18,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:18,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:05:18,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 23:05:18,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:05:18,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:05:18,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:18,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290455749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:18,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:18,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 23:05:18,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984406061] [2021-10-28 23:05:18,506 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:18,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:05:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:05:18,507 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. cyclomatic complexity: 2 Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:18,558 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-28 23:05:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:05:18,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 45 transitions. [2021-10-28 23:05:18,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-10-28 23:05:18,566 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 45 transitions. [2021-10-28 23:05:18,566 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-28 23:05:18,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-28 23:05:18,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 45 transitions. [2021-10-28 23:05:18,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:18,567 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-28 23:05:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 45 transitions. [2021-10-28 23:05:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-28 23:05:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.025) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-28 23:05:18,575 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-28 23:05:18,575 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-28 23:05:18,576 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:05:18,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 41 transitions. [2021-10-28 23:05:18,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-10-28 23:05:18,577 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:18,577 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:18,579 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:18,579 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 7, 7, 7, 7, 1, 1, 1] [2021-10-28 23:05:18,580 INFO L791 eck$LassoCheckResult]: Stem: 780#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 781#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 786#L27-3 [2021-10-28 23:05:18,580 INFO L793 eck$LassoCheckResult]: Loop: 786#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 787#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 817#L18 assume !(0 == __VERIFIER_assert_~cond); 816#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 815#L18-3 assume !(0 == __VERIFIER_assert_~cond); 783#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 784#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 778#L18 assume !(0 == __VERIFIER_assert_~cond); 779#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 782#L18-3 assume !(0 == __VERIFIER_assert_~cond); 785#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 814#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 813#L18 assume !(0 == __VERIFIER_assert_~cond); 812#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 811#L18-3 assume !(0 == __VERIFIER_assert_~cond); 810#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 809#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 808#L18 assume !(0 == __VERIFIER_assert_~cond); 807#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 806#L18-3 assume !(0 == __VERIFIER_assert_~cond); 805#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 804#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 803#L18 assume !(0 == __VERIFIER_assert_~cond); 802#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 801#L18-3 assume !(0 == __VERIFIER_assert_~cond); 800#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 799#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 798#L18 assume !(0 == __VERIFIER_assert_~cond); 797#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 796#L18-3 assume !(0 == __VERIFIER_assert_~cond); 795#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 794#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 790#L18 assume !(0 == __VERIFIER_assert_~cond); 793#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 792#L18-3 assume !(0 == __VERIFIER_assert_~cond); 791#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 789#L28-2 assume !(main_~j~0 < 8); 788#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 786#L27-3 [2021-10-28 23:05:18,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-28 23:05:18,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:18,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911506842] [2021-10-28 23:05:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:18,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:18,611 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:18,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 736121931, now seen corresponding path program 7 times [2021-10-28 23:05:18,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:18,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448489070] [2021-10-28 23:05:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:18,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:18,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:18,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448489070] [2021-10-28 23:05:18,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448489070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:18,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379073754] [2021-10-28 23:05:18,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:05:18,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:18,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:18,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:05:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:18,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:05:18,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:19,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379073754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:19,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:19,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 23:05:19,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643667002] [2021-10-28 23:05:19,068 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:19,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:05:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:05:19,070 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:19,119 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-10-28 23:05:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:05:19,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 46 transitions. [2021-10-28 23:05:19,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-28 23:05:19,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 46 transitions. [2021-10-28 23:05:19,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-28 23:05:19,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-28 23:05:19,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 46 transitions. [2021-10-28 23:05:19,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:19,129 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 23:05:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 46 transitions. [2021-10-28 23:05:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-28 23:05:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-28 23:05:19,145 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 23:05:19,146 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 23:05:19,146 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:05:19,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 46 transitions. [2021-10-28 23:05:19,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-28 23:05:19,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:19,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:19,148 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:05:19,149 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 8, 8, 8, 8, 1, 1, 1] [2021-10-28 23:05:19,149 INFO L791 eck$LassoCheckResult]: Stem: 989#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 990#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 995#L27-3 [2021-10-28 23:05:19,149 INFO L793 eck$LassoCheckResult]: Loop: 995#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 996#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1031#L18 assume !(0 == __VERIFIER_assert_~cond); 1030#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1029#L18-3 assume !(0 == __VERIFIER_assert_~cond); 992#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 993#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 987#L18 assume !(0 == __VERIFIER_assert_~cond); 988#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 991#L18-3 assume !(0 == __VERIFIER_assert_~cond); 994#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1028#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1027#L18 assume !(0 == __VERIFIER_assert_~cond); 1026#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1025#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1024#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1023#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1022#L18 assume !(0 == __VERIFIER_assert_~cond); 1021#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1020#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1019#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1018#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1017#L18 assume !(0 == __VERIFIER_assert_~cond); 1016#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1015#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1014#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1013#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1012#L18 assume !(0 == __VERIFIER_assert_~cond); 1011#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1010#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1009#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1008#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1007#L18 assume !(0 == __VERIFIER_assert_~cond); 1006#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1005#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1004#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1003#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 999#L18 assume !(0 == __VERIFIER_assert_~cond); 1002#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1001#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1000#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 998#L28-2 assume !(main_~j~0 < 8); 997#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 995#L27-3 [2021-10-28 23:05:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-28 23:05:19,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:19,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160321935] [2021-10-28 23:05:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:19,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:19,167 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:19,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1675619716, now seen corresponding path program 8 times [2021-10-28 23:05:19,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:19,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500428170] [2021-10-28 23:05:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:19,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:19,222 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:19,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:19,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:19,261 INFO L85 PathProgramCache]: Analyzing trace with hash -532421502, now seen corresponding path program 1 times [2021-10-28 23:05:19,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:19,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381457714] [2021-10-28 23:05:19,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:19,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:19,296 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:19,330 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:20,162 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:05:20,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:05:20,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:05:20,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:05:20,163 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:05:20,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:05:20,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:05:20,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-28 23:05:20,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:05:20,164 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:05:20,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,294 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:05:20,295 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:05:20,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:05:20,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:20,311 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:20,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:05:20,334 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:05:20,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 23:05:20,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,369 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:05:20,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:20,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:20,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:20,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,459 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:05:20,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:20,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:05:20,621 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:05:20,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:20,631 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:05:20,631 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:05:20,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:05:20,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:05:20,632 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:05:20,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,632 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:05:20,632 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:05:20,632 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-28 23:05:20,632 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:05:20,632 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:05:20,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:20,735 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:05:20,741 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:05:20,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,746 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:05:20,749 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:20,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:20,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:20,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:20,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:20,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:20,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:20,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:20,765 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:05:20,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:20,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,797 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:05:20,799 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:20,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:20,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:20,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:20,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:20,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:20,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:20,811 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:20,817 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:05:20,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:20,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,845 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:05:20,849 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:20,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:20,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:20,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:20,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:20,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:20,860 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:20,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:20,872 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:05:20,878 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:05:20,879 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:05:20,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:20,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:20,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:05:20,905 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:05:20,905 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:05:20,905 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:05:20,905 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nlen~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nlen~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:05:20,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:20,934 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:05:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:20,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:05:20,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:21,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:05:21,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:21,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-28 23:05:21,510 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:05:21,510 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:21,555 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 88 states and 91 transitions. Complement of second has 4 states. [2021-10-28 23:05:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:05:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-28 23:05:21,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 43 letters. [2021-10-28 23:05:21,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:21,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 45 letters. Loop has 43 letters. [2021-10-28 23:05:21,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:21,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 86 letters. [2021-10-28 23:05:21,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:21,571 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 91 transitions. [2021-10-28 23:05:21,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:05:21,573 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 87 states and 90 transitions. [2021-10-28 23:05:21,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-28 23:05:21,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-28 23:05:21,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 90 transitions. [2021-10-28 23:05:21,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:05:21,574 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-10-28 23:05:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 90 transitions. [2021-10-28 23:05:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 51. [2021-10-28 23:05:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 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) [2021-10-28 23:05:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-10-28 23:05:21,579 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-28 23:05:21,579 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-28 23:05:21,579 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:05:21,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 54 transitions. [2021-10-28 23:05:21,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:05:21,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:21,580 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:21,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:05:21,580 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:05:21,580 INFO L791 eck$LassoCheckResult]: Stem: 1279#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 1280#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1289#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1285#L28-2 [2021-10-28 23:05:21,580 INFO L793 eck$LassoCheckResult]: Loop: 1285#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1275#L18 assume !(0 == __VERIFIER_assert_~cond); 1276#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1281#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1284#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1285#L28-2 [2021-10-28 23:05:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2021-10-28 23:05:21,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584409326] [2021-10-28 23:05:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,603 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,614 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 1 times [2021-10-28 23:05:21,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687384590] [2021-10-28 23:05:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,622 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,628 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 271240594, now seen corresponding path program 1 times [2021-10-28 23:05:21,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629617660] [2021-10-28 23:05:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,639 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,648 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:21,734 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:05:21,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:05:21,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:05:21,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:05:21,734 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:05:21,734 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:21,734 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:05:21,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:05:21,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-28 23:05:21,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:05:21,735 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:05:21,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:21,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:21,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:21,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:21,805 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:05:21,805 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:05:21,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:21,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:21,806 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:21,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:21,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:21,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:05:21,851 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:05:21,851 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:05:21,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-28 23:05:21,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:21,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:21,900 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:21,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:05:21,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:21,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:21,942 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:05:21,943 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:05:21,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:21,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:21,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:21,988 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:22,000 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:22,000 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:22,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:05:22,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:05:22,023 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:05:22,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:22,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:22,074 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:22,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:22,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:22,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:05:22,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:22,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:22,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:22,157 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:22,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:05:22,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:05:22,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:22,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:05:22,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:22,213 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:05:22,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:05:22,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:05:22,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:05:22,213 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:05:22,213 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:22,213 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:05:22,213 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:05:22,213 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-28 23:05:22,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:05:22,214 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:05:22,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:22,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:22,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:22,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:22,294 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:05:22,294 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:05:22,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:22,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:22,295 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:22,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:22,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:22,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:22,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:22,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:22,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:22,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:22,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:22,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:05:22,335 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:05:22,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:22,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:22,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:22,385 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:22,392 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:22,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:05:22,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:22,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:22,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:22,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:22,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:22,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:22,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:22,419 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:05:22,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:22,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:22,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:22,468 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:22,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:22,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:22,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:22,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:22,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:22,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:22,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:22,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:22,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:05:22,511 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:05:22,513 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:05:22,514 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:05:22,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:22,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:22,515 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:22,523 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:05:22,523 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:05:22,523 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:05:22,523 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-28 23:05:22,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:05:22,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:22,572 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:05:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:22,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:05:22,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:22,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:05:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:22,697 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:05:22,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:22,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:22,755 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 138 states and 145 transitions. Complement of second has 7 states. [2021-10-28 23:05:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:05:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 23:05:22,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-28 23:05:22,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:22,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-28 23:05:22,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:22,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-28 23:05:22,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:22,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 145 transitions. [2021-10-28 23:05:22,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:05:22,761 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 94 states and 98 transitions. [2021-10-28 23:05:22,761 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 23:05:22,761 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 23:05:22,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 98 transitions. [2021-10-28 23:05:22,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:05:22,761 INFO L681 BuchiCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-28 23:05:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 98 transitions. [2021-10-28 23:05:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 51. [2021-10-28 23:05:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 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) [2021-10-28 23:05:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-10-28 23:05:22,777 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-28 23:05:22,777 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-28 23:05:22,777 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 23:05:22,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 53 transitions. [2021-10-28 23:05:22,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:05:22,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:22,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:22,782 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 8, 8, 8, 2, 1, 1, 1, 1] [2021-10-28 23:05:22,782 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:05:22,785 INFO L791 eck$LassoCheckResult]: Stem: 1516#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 1517#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1525#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1526#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1562#L18 assume !(0 == __VERIFIER_assert_~cond); 1561#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1560#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1520#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1521#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1514#L18 assume !(0 == __VERIFIER_assert_~cond); 1515#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1523#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1524#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1559#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1558#L18 assume !(0 == __VERIFIER_assert_~cond); 1557#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1556#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1555#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1554#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1553#L18 assume !(0 == __VERIFIER_assert_~cond); 1552#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1551#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1550#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1549#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1548#L18 assume !(0 == __VERIFIER_assert_~cond); 1547#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1546#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1545#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1544#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1543#L18 assume !(0 == __VERIFIER_assert_~cond); 1542#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1541#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1540#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1539#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1538#L18 assume !(0 == __VERIFIER_assert_~cond); 1537#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1536#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1535#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1534#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1530#L18 assume !(0 == __VERIFIER_assert_~cond); 1533#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1532#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1531#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1529#L28-2 assume !(main_~j~0 < 8); 1528#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1527#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1519#L28-2 [2021-10-28 23:05:22,791 INFO L793 eck$LassoCheckResult]: Loop: 1519#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1512#L18 assume !(0 == __VERIFIER_assert_~cond); 1513#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1522#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1518#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1519#L28-2 [2021-10-28 23:05:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 674802632, now seen corresponding path program 2 times [2021-10-28 23:05:22,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:22,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522486221] [2021-10-28 23:05:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:22,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:22,825 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:22,860 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 2 times [2021-10-28 23:05:22,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:22,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387546469] [2021-10-28 23:05:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:22,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:22,873 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:22,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1573708561, now seen corresponding path program 3 times [2021-10-28 23:05:22,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:22,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225203233] [2021-10-28 23:05:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:22,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:22,915 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:22,936 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:23,009 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:05:23,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:05:23,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:05:23,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:05:23,010 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:05:23,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:05:23,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:05:23,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-28 23:05:23,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:05:23,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:05:23,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,080 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:05:23,080 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:05:23,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,082 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:23,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:23,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:05:23,111 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:05:23,111 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:05:23,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,162 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:23,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:23,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:05:23,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:05:23,195 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:05:23,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,243 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:23,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:23,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:05:23,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:05:23,268 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:05:23,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,305 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:05:23,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:05:23,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:23,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,346 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:05:23,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:05:23,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:05:23,410 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:05:23,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,418 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:05:23,418 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:05:23,418 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:05:23,418 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:05:23,418 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:05:23,418 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:05:23,419 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:05:23,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-28 23:05:23,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:05:23,419 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:05:23,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:05:23,485 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:05:23,485 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:05:23,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,487 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:23,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:05:23,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:23,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:23,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:23,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:23,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:23,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:23,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:23,513 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:05:23,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,540 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:05:23,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:23,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:23,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:23,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:23,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:23,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:23,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:23,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:23,556 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:05:23,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-10-28 23:05:23,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,584 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:05:23,592 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:23,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:23,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:23,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:23,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:23,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:23,605 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:23,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:23,609 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:05:23,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,636 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:05:23,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:05:23,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:05:23,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:05:23,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:05:23,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:05:23,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:05:23,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:05:23,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:05:23,660 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:05:23,662 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:05:23,662 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:05:23,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:23,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:23,663 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:23,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 23:05:23,665 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:05:23,665 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:05:23,665 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:05:23,665 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-28 23:05:23,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:23,700 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:05:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:23,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:05:23,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:05:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:23,990 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:05:23,990 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:24,008 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 128 states and 133 transitions. Complement of second has 7 states. [2021-10-28 23:05:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:05:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 23:05:24,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-28 23:05:24,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:24,010 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:05:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:24,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:05:24,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:05:24,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:24,303 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:05:24,304 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:24,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:24,325 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 128 states and 133 transitions. Complement of second has 7 states. [2021-10-28 23:05:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:05:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 23:05:24,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-28 23:05:24,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:24,327 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:05:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:24,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:05:24,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:24,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:05:24,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:24,616 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:05:24,616 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:24,642 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 90 states and 94 transitions. Complement of second has 6 states. [2021-10-28 23:05:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:05:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:05:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 23:05:24,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-28 23:05:24,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:24,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 51 letters. Loop has 5 letters. [2021-10-28 23:05:24,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:24,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 10 letters. [2021-10-28 23:05:24,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:05:24,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 94 transitions. [2021-10-28 23:05:24,649 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:05:24,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 0 states and 0 transitions. [2021-10-28 23:05:24,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:05:24,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:05:24,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:05:24,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:24,650 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:05:24,650 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:05:24,650 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:05:24,650 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 23:05:24,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:05:24,651 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:05:24,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:05:24,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:05:24 BoogieIcfgContainer [2021-10-28 23:05:24,660 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:05:24,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:05:24,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:05:24,661 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:05:24,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:15" (3/4) ... [2021-10-28 23:05:24,665 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:05:24,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:05:24,667 INFO L168 Benchmark]: Toolchain (without parser) took 10258.89 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 61.7 MB in the beginning and 76.9 MB in the end (delta: -15.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:24,667 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:24,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.48 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 72.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:24,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.53 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:24,669 INFO L168 Benchmark]: Boogie Preprocessor took 28.78 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 70.1 MB in the end (delta: 892.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:24,670 INFO L168 Benchmark]: RCFGBuilder took 409.57 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 60.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:24,670 INFO L168 Benchmark]: BuchiAutomizer took 9429.18 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 60.5 MB in the beginning and 76.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:05:24,670 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 142.6 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:05:24,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.48 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 72.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.53 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.78 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 70.1 MB in the end (delta: 892.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 409.57 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 60.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9429.18 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 60.5 MB in the beginning and 76.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 142.6 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (8 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function nlen + -1 * i and consists of 3 locations. One deterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. One nondeterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.3s and 12 iterations. TraceHistogramMax:8. Analysis of lassos took 6.9s. Construction of modules took 0.1s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 9. Minimization of nondet autom 2. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 107 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 51 states and ocurred in iteration 9. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 148/148 HoareTripleCheckerStatistics: 115 SDtfs, 197 SDslu, 163 SDs, 0 SdLazy, 157 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI8 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax100 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq133 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:05:24,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-28 23:05:24,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-28 23:05:25,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-28 23:05:25,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:25,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:25,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 23:05:25,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 23:05:26,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919fd35c-6a45-48be-a8c9-f78334716443/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...