./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y --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 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:49:14,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:49:14,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:49:15,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:49:15,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:49:15,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:49:15,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:49:15,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:49:15,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:49:15,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:49:15,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:49:15,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:49:15,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:49:15,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:49:15,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:49:15,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:49:15,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:49:15,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:49:15,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:49:15,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:49:15,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:49:15,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:49:15,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:49:15,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:49:15,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:49:15,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:49:15,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:49:15,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:49:15,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:49:15,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:49:15,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:49:15,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:49:15,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:49:15,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:49:15,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:49:15,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:49:15,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:49:15,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:49:15,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:49:15,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:49:15,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:49:15,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-13 18:49:15,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:49:15,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:49:15,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:49:15,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:49:15,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:49:15,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:49:15,161 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:49:15,162 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-13 18:49:15,162 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-13 18:49:15,162 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-13 18:49:15,164 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-13 18:49:15,164 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-13 18:49:15,164 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-13 18:49:15,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:49:15,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:49:15,166 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:49:15,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:49:15,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:49:15,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:49:15,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-13 18:49:15,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-13 18:49:15,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-13 18:49:15,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:49:15,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:49:15,178 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-13 18:49:15,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:49:15,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-13 18:49:15,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:49:15,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:49:15,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:49:15,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:49:15,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:49:15,182 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-13 18:49:15,182 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_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2021-11-13 18:49:15,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:49:15,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:49:15,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:49:15,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:49:15,585 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:49:15,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-11-13 18:49:15,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/data/96f76996b/ff04b33bdfaf494a85378d44b0cd1c80/FLAGba869c952 [2021-11-13 18:49:16,244 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:49:16,245 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-11-13 18:49:16,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/data/96f76996b/ff04b33bdfaf494a85378d44b0cd1c80/FLAGba869c952 [2021-11-13 18:49:16,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/data/96f76996b/ff04b33bdfaf494a85378d44b0cd1c80 [2021-11-13 18:49:16,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:49:16,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:49:16,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:49:16,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:49:16,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:49:16,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:16,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49531c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16, skipping insertion in model container [2021-11-13 18:49:16,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:16,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:49:16,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:49:16,907 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_d74491f1-7476-477d-8425-6c1619d2728e/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-11-13 18:49:16,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:49:16,919 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:49:16,942 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_d74491f1-7476-477d-8425-6c1619d2728e/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-11-13 18:49:16,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:49:16,964 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:49:16,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16 WrapperNode [2021-11-13 18:49:16,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:49:16,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:49:16,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:49:16,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:49:16,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:16,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:49:17,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:49:17,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:49:17,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:49:17,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:49:17,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:49:17,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:49:17,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:49:17,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (1/1) ... [2021-11-13 18:49:17,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:17,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:17,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:17,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-13 18:49:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:49:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:49:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:49:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:49:17,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:49:17,515 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:49:17,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:49:17 BoogieIcfgContainer [2021-11-13 18:49:17,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:49:17,521 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-13 18:49:17,521 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-13 18:49:17,539 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-13 18:49:17,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:49:17,553 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 06:49:16" (1/3) ... [2021-11-13 18:49:17,555 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44a36073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:49:17, skipping insertion in model container [2021-11-13 18:49:17,556 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:49:17,556 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:49:16" (2/3) ... [2021-11-13 18:49:17,556 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44a36073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:49:17, skipping insertion in model container [2021-11-13 18:49:17,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:49:17,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:49:17" (3/3) ... [2021-11-13 18:49:17,559 INFO L388 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-11-13 18:49:17,615 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-13 18:49:17,615 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-13 18:49:17,616 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-13 18:49:17,616 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-13 18:49:17,616 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-13 18:49:17,616 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-13 18:49:17,616 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-13 18:49:17,617 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-13 18:49:17,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-11-13 18:49:17,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-13 18:49:17,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:17,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:17,704 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-13 18:49:17,716 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-13 18:49:17,717 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-13 18:49:17,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-11-13 18:49:17,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-13 18:49:17,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:17,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:17,723 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-13 18:49:17,724 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-13 18:49:17,732 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 7#L111true [2021-11-13 18:49:17,746 INFO L793 eck$LassoCheckResult]: Loop: 7#L111true assume !false; 5#L30true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 13#L36true assume 8466 == main_~s__state~0#1; 15#L37true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 18#L69-1true assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 7#L111true [2021-11-13 18:49:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:17,755 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-13 18:49:17,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:17,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133247738] [2021-11-13 18:49:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:17,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:17,885 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:17,944 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:17,949 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-11-13 18:49:17,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:17,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162280249] [2021-11-13 18:49:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:17,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:17,982 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:18,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-11-13 18:49:18,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:18,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339694379] [2021-11-13 18:49:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:18,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:18,047 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:18,110 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:18,287 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:18,288 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:18,288 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:18,288 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:18,289 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 18:49:18,289 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:18,289 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:18,289 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:18,290 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-11-13 18:49:18,290 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:18,291 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:18,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:18,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:18,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:18,449 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:18,450 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 18:49:18,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:18,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:18,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-13 18:49:18,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:18,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:18,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:18,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:18,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:18,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:18,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 18:49:18,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:18,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-13 18:49:18,617 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 18:49:18,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:18,663 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:18,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:18,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:18,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:18,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 18:49:18,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:18,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:18,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:18,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-11-13 18:49:18,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:18,664 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:18,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:18,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:18,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:18,759 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:18,765 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 18:49:18,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:18,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:18,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:18,781 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 [2021-11-13 18:49:18,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:18,793 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:18,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:18,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:18,794 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:18,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:18,799 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:18,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-13 18:49:18,816 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 18:49:18,828 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 18:49:18,828 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 18:49:18,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:18,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:18,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:18,839 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 18:49:18,839 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 18:49:18,840 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 18:49:18,841 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0#1) = -1*ULTIMATE.start_main_~blastFlag~0#1 + 1 Supporting invariants [] [2021-11-13 18:49:18,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-13 18:49:18,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-11-13 18:49:18,957 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 18:49:18,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:19,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:49:19,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:19,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:49:19,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:19,271 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 [2021-11-13 18:49:19,273 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:49:19,392 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2021-11-13 18:49:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 18:49:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:49:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-11-13 18:49:19,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-11-13 18:49:19,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:19,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-11-13 18:49:19,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:19,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-11-13 18:49:19,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:19,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-11-13 18:49:19,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-13 18:49:19,432 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-11-13 18:49:19,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-13 18:49:19,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-11-13 18:49:19,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-11-13 18:49:19,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:19,436 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-11-13 18:49:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-11-13 18:49:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-11-13 18:49:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 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) [2021-11-13 18:49:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-11-13 18:49:19,485 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-11-13 18:49:19,486 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-11-13 18:49:19,486 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-13 18:49:19,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-11-13 18:49:19,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-13 18:49:19,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:19,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:19,494 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-13 18:49:19,495 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-13 18:49:19,497 INFO L791 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 148#L111 assume !false; 120#L30 [2021-11-13 18:49:19,497 INFO L793 eck$LassoCheckResult]: Loop: 120#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 121#L36 assume 8466 == main_~s__state~0#1; 144#L37 assume !(0 == main_~blastFlag~0#1); 151#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 130#L111 assume !false; 120#L30 [2021-11-13 18:49:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-13 18:49:19,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:19,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103540597] [2021-11-13 18:49:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:19,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:19,531 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:19,568 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-11-13 18:49:19,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:19,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242489915] [2021-11-13 18:49:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:19,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:19,576 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:19,582 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-11-13 18:49:19,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:19,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922836744] [2021-11-13 18:49:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:19,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:19,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:19,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922836744] [2021-11-13 18:49:19,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922836744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:19,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:19,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:49:19,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860008182] [2021-11-13 18:49:19,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:19,710 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:19,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:19,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:19,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:19,711 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 18:49:19,711 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:19,712 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:19,712 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:19,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-11-13 18:49:19,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:19,712 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:19,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:19,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:19,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:19,809 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:19,810 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 18:49:19,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:19,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:19,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:19,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:19,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:19,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-13 18:49:19,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-13 18:49:19,850 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-13 18:49:19,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:19,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:19,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:19,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:19,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:19,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:19,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-13 18:49:19,945 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-13 18:49:19,945 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=0} Honda state: {ULTIMATE.start_main_~s__hit~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-13 18:49:19,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:19,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:19,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:19,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:19,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-13 18:49:19,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:20,000 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:20,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-11-13 18:49:20,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:20,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:20,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:20,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-13 18:49:20,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 18:49:20,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:20,080 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 18:49:20,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:20,121 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:20,121 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:20,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:20,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:20,121 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 18:49:20,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:20,121 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:20,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:20,122 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-11-13 18:49:20,122 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:20,122 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:20,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:20,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:20,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:20,207 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:20,207 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 18:49:20,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:20,213 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:20,220 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 [2021-11-13 18:49:20,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:20,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:20,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:20,232 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-13 18:49:20,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:20,234 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-13 18:49:20,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:20,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-13 18:49:20,252 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:49:20,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:20,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:20,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:20,300 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:20,310 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 [2021-11-13 18:49:20,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:20,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:20,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:20,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:20,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:20,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:20,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:20,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-13 18:49:20,334 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:49:20,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:20,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:20,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:20,371 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:20,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-13 18:49:20,373 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 [2021-11-13 18:49:20,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:20,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:20,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:20,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:20,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:20,385 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:20,385 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:20,388 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 18:49:20,391 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 18:49:20,391 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 18:49:20,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:20,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:20,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:20,425 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 18:49:20,425 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 18:49:20,425 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 18:49:20,425 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8489 Supporting invariants [] [2021-11-13 18:49:20,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-13 18:49:20,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:20,468 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 18:49:20,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:20,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:49:20,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:20,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:49:20,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:20,598 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-13 18:49:20,599 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-11-13 18:49:20,697 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 104 states and 155 transitions. Complement of second has 7 states. [2021-11-13 18:49:20,699 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 [2021-11-13 18:49:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-11-13 18:49:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-11-13 18:49:20,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-11-13 18:49:20,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:20,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-11-13 18:49:20,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:20,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-11-13 18:49:20,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:20,706 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-11-13 18:49:20,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-13 18:49:20,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-11-13 18:49:20,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-11-13 18:49:20,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-11-13 18:49:20,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-11-13 18:49:20,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:20,726 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-11-13 18:49:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-11-13 18:49:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-11-13 18:49:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 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) [2021-11-13 18:49:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-11-13 18:49:20,740 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-11-13 18:49:20,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:20,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:20,745 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. 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) [2021-11-13 18:49:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:20,791 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-11-13 18:49:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:20,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-11-13 18:49:20,805 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-13 18:49:20,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-11-13 18:49:20,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-11-13 18:49:20,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-11-13 18:49:20,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-11-13 18:49:20,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:20,812 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-11-13 18:49:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-11-13 18:49:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-13 18:49:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 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) [2021-11-13 18:49:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-11-13 18:49:20,820 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-11-13 18:49:20,820 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-11-13 18:49:20,820 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-13 18:49:20,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-11-13 18:49:20,822 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-13 18:49:20,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:20,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:20,822 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-13 18:49:20,823 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:49:20,823 INFO L791 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 460#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 481#L111 assume !false; 455#L30 [2021-11-13 18:49:20,823 INFO L793 eck$LassoCheckResult]: Loop: 455#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 456#L36 assume !(8466 == main_~s__state~0#1); 478#L41 assume 8512 == main_~s__state~0#1; 482#L42 main_~tmp___1~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 476#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 465#L111 assume !false; 455#L30 [2021-11-13 18:49:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-11-13 18:49:20,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:20,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246209129] [2021-11-13 18:49:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:20,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:20,839 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:20,851 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-11-13 18:49:20,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:20,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939957013] [2021-11-13 18:49:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:20,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:20,857 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:20,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:20,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:20,863 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-11-13 18:49:20,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:20,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483205746] [2021-11-13 18:49:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:20,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:20,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:20,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483205746] [2021-11-13 18:49:20,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483205746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:20,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:20,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:49:20,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023646011] [2021-11-13 18:49:20,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:20,968 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:20,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:20,968 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:20,968 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:20,968 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 18:49:20,969 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:20,969 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:20,969 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:20,969 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-11-13 18:49:20,969 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:20,970 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:20,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:20,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:20,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:21,053 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:21,053 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 18:49:21,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:21,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:21,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-13 18:49:21,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:21,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:21,085 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-13 18:49:21,085 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=2} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-13 18:49:21,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:21,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:21,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:21,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:21,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:21,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-13 18:49:21,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:21,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:21,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:21,216 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:21,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-13 18:49:21,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 18:49:21,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:21,240 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 18:49:21,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:21,264 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:21,264 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:21,264 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:21,264 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:21,265 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 18:49:21,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:21,265 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:21,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:21,265 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-11-13 18:49:21,265 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:21,265 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:21,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:21,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:21,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:21,347 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:21,347 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 18:49:21,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:21,349 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:21,358 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 [2021-11-13 18:49:21,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:21,371 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:21,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:21,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:21,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:21,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:21,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:21,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-13 18:49:21,375 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:49:21,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:21,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:21,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:21,406 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:21,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-13 18:49:21,423 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 [2021-11-13 18:49:21,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:21,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:21,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:21,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:21,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:21,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:21,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:21,442 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 18:49:21,444 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-13 18:49:21,445 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 18:49:21,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:21,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:21,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:21,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-13 18:49:21,448 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 18:49:21,448 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 18:49:21,448 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 18:49:21,448 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2021-11-13 18:49:21,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:21,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 18:49:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:21,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:49:21,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:21,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:49:21,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:21,607 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-13 18:49:21,607 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-13 18:49:21,709 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 170 states and 232 transitions. Complement of second has 9 states. [2021-11-13 18:49:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-13 18:49:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-13 18:49:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-11-13 18:49:21,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-11-13 18:49:21,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:21,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-11-13 18:49:21,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:21,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-11-13 18:49:21,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:21,714 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-11-13 18:49:21,716 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-13 18:49:21,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-11-13 18:49:21,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-11-13 18:49:21,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-11-13 18:49:21,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-11-13 18:49:21,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:21,720 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-11-13 18:49:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-11-13 18:49:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-11-13 18:49:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 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) [2021-11-13 18:49:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-11-13 18:49:21,739 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-11-13 18:49:21,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:21,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:21,740 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-13 18:49:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:21,768 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-11-13 18:49:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:21,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-11-13 18:49:21,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-11-13 18:49:21,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-11-13 18:49:21,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-11-13 18:49:21,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-11-13 18:49:21,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-11-13 18:49:21,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:21,779 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-13 18:49:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-11-13 18:49:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-13 18:49:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 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) [2021-11-13 18:49:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-11-13 18:49:21,785 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-13 18:49:21,785 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-13 18:49:21,785 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-13 18:49:21,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-11-13 18:49:21,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-11-13 18:49:21,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:21,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:21,789 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:21,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:49:21,790 INFO L791 eck$LassoCheckResult]: Stem: 941#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 942#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 947#L111 assume !false; 939#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 940#L36 assume 8466 == main_~s__state~0#1; 969#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 987#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 983#L111 assume !false; 982#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 980#L36 assume !(8466 == main_~s__state~0#1); 975#L41 [2021-11-13 18:49:21,790 INFO L793 eck$LassoCheckResult]: Loop: 975#L41 assume 8512 == main_~s__state~0#1; 970#L42 main_~tmp___1~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 961#L81 assume !(0 != main_~tmp___1~0#1);main_~s__state~0#1 := 8640; 963#L111 assume !false; 937#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 938#L36 assume !(8466 == main_~s__state~0#1); 975#L41 [2021-11-13 18:49:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-11-13 18:49:21,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:21,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284374519] [2021-11-13 18:49:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:21,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:21,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:21,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-11-13 18:49:21,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:21,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082521328] [2021-11-13 18:49:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:21,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:21,825 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:21,831 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:21,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-11-13 18:49:21,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:21,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357934873] [2021-11-13 18:49:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:21,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:21,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:21,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:21,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357934873] [2021-11-13 18:49:21,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357934873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:21,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:21,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:49:21,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533112785] [2021-11-13 18:49:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:21,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:21,998 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:21,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:21,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:21,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:21,999 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 18:49:21,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,000 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:22,000 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:22,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-11-13 18:49:22,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:22,000 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:22,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:22,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:22,049 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:22,049 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 18:49:22,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:22,057 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:22,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:22,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:22,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-13 18:49:22,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-13 18:49:22,092 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet8#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet8#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-13 18:49:22,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:22,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:22,140 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:22,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-13 18:49:22,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:22,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:22,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:22,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:22,195 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:22,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-13 18:49:22,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 18:49:22,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:22,247 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 18:49:22,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:22,287 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:22,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:22,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:22,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:22,287 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 18:49:22,287 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,287 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:22,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:22,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-11-13 18:49:22,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:22,287 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:22,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:22,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:22,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:22,336 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 18:49:22,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:22,338 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:22,350 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 [2021-11-13 18:49:22,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:22,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:22,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:22,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:22,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:22,365 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:22,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:22,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-13 18:49:22,384 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:49:22,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:22,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:22,431 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:22,436 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 [2021-11-13 18:49:22,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:22,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:22,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:22,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:22,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:22,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:22,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:22,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-13 18:49:22,469 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 18:49:22,473 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 18:49:22,473 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 18:49:22,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:22,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:22,475 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:22,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-13 18:49:22,476 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 18:49:22,476 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 18:49:22,476 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 18:49:22,476 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8576 Supporting invariants [] [2021-11-13 18:49:22,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-11-13 18:49:22,501 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 18:49:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:22,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:49:22,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:22,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:49:22,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:22,683 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-13 18:49:22,683 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-13 18:49:22,786 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 183 states and 281 transitions. Complement of second has 9 states. [2021-11-13 18:49:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-13 18:49:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-13 18:49:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-11-13 18:49:22,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-11-13 18:49:22,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:22,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-11-13 18:49:22,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:22,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-11-13 18:49:22,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:22,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-11-13 18:49:22,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-11-13 18:49:22,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-11-13 18:49:22,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-11-13 18:49:22,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-11-13 18:49:22,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-11-13 18:49:22,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:22,798 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-11-13 18:49:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-11-13 18:49:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-11-13 18:49:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 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) [2021-11-13 18:49:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-11-13 18:49:22,809 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-11-13 18:49:22,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:22,811 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. 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) [2021-11-13 18:49:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:22,843 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-11-13 18:49:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:22,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-11-13 18:49:22,849 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-11-13 18:49:22,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-11-13 18:49:22,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-11-13 18:49:22,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-13 18:49:22,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-11-13 18:49:22,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:22,851 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-11-13 18:49:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-11-13 18:49:22,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-11-13 18:49:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 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) [2021-11-13 18:49:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-11-13 18:49:22,860 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-11-13 18:49:22,860 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-11-13 18:49:22,860 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-13 18:49:22,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-11-13 18:49:22,861 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-11-13 18:49:22,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:22,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:22,862 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:22,862 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:22,863 INFO L791 eck$LassoCheckResult]: Stem: 1552#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1553#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1577#L111 assume !false; 1674#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1672#L36 assume 8466 == main_~s__state~0#1; 1648#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1645#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1558#L111 [2021-11-13 18:49:22,863 INFO L793 eck$LassoCheckResult]: Loop: 1558#L111 assume !false; 1548#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1549#L36 assume !(8466 == main_~s__state~0#1); 1575#L41 assume !(8512 == main_~s__state~0#1); 1591#L57 assume !(8640 == main_~s__state~0#1); 1554#L61 assume 8656 == main_~s__state~0#1; 1555#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1564#L100-1 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 1566#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1590#L111 assume !false; 1624#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1625#L36 assume 8466 == main_~s__state~0#1; 1581#L37 assume !(0 == main_~blastFlag~0#1); 1582#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1558#L111 [2021-11-13 18:49:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:22,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-11-13 18:49:22,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:22,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600769165] [2021-11-13 18:49:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:22,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:22,875 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:22,888 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-11-13 18:49:22,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:22,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512725844] [2021-11-13 18:49:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:22,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:22,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:22,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512725844] [2021-11-13 18:49:22,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512725844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:22,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:22,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:49:22,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973983253] [2021-11-13 18:49:22,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:22,914 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:49:22,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:22,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:22,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:22,915 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-13 18:49:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:22,958 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-11-13 18:49:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:22,960 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-11-13 18:49:22,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-11-13 18:49:22,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-11-13 18:49:22,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-11-13 18:49:22,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-11-13 18:49:22,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-11-13 18:49:22,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:22,966 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-13 18:49:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-11-13 18:49:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-13 18:49:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 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) [2021-11-13 18:49:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-11-13 18:49:22,976 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-13 18:49:22,976 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-13 18:49:22,976 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-13 18:49:22,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-11-13 18:49:22,978 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-11-13 18:49:22,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:22,979 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:22,980 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:22,980 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:22,980 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1875#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1880#L111 assume !false; 1881#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2008#L36 assume 8466 == main_~s__state~0#1; 1992#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1989#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1940#L111 [2021-11-13 18:49:22,980 INFO L793 eck$LassoCheckResult]: Loop: 1940#L111 assume !false; 1960#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1958#L36 assume !(8466 == main_~s__state~0#1); 1955#L41 assume !(8512 == main_~s__state~0#1); 1952#L57 assume !(8640 == main_~s__state~0#1); 1876#L61 assume 8656 == main_~s__state~0#1; 1877#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1883#L100-1 assume !(4 == main_~blastFlag~0#1); 1884#L107 assume !(5 == main_~blastFlag~0#1); 1918#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1919#L111 assume !false; 1978#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1979#L36 assume 8466 == main_~s__state~0#1; 1968#L37 assume !(0 == main_~blastFlag~0#1); 1965#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1940#L111 [2021-11-13 18:49:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-11-13 18:49:22,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:22,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059964583] [2021-11-13 18:49:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:22,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,004 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-11-13 18:49:23,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723366253] [2021-11-13 18:49:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:23,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:23,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723366253] [2021-11-13 18:49:23,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723366253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:23,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:23,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:49:23,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844508063] [2021-11-13 18:49:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:23,049 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:49:23,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:23,050 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-13 18:49:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:23,101 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-11-13 18:49:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:23,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-11-13 18:49:23,104 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-11-13 18:49:23,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-11-13 18:49:23,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-11-13 18:49:23,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-11-13 18:49:23,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-11-13 18:49:23,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:23,106 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-11-13 18:49:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-11-13 18:49:23,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-11-13 18:49:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 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) [2021-11-13 18:49:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-11-13 18:49:23,111 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-11-13 18:49:23,111 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-11-13 18:49:23,111 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-13 18:49:23,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-11-13 18:49:23,112 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-11-13 18:49:23,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:23,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:23,113 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:23,113 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:23,114 INFO L791 eck$LassoCheckResult]: Stem: 2215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2234#L111 assume !false; 2300#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2237#L36 assume 8466 == main_~s__state~0#1; 2238#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2266#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2268#L111 [2021-11-13 18:49:23,114 INFO L793 eck$LassoCheckResult]: Loop: 2268#L111 assume !false; 2310#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2308#L36 assume !(8466 == main_~s__state~0#1); 2306#L41 assume !(8512 == main_~s__state~0#1); 2252#L57 assume !(8640 == main_~s__state~0#1); 2221#L61 assume 8656 == main_~s__state~0#1; 2222#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 2228#L100-1 assume !(4 == main_~blastFlag~0#1); 2229#L107 assume !(5 == main_~blastFlag~0#1); 2245#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2223#L111 assume !false; 2224#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2235#L36 assume !(8466 == main_~s__state~0#1); 2236#L41 assume !(8512 == main_~s__state~0#1); 2246#L57 assume 8640 == main_~s__state~0#1; 2304#L58 assume !(3 == main_~blastFlag~0#1); 2311#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2268#L111 [2021-11-13 18:49:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-11-13 18:49:23,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794739439] [2021-11-13 18:49:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,137 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,153 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-11-13 18:49:23,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336443656] [2021-11-13 18:49:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:23,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:23,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336443656] [2021-11-13 18:49:23,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336443656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:23,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:23,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:49:23,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554855555] [2021-11-13 18:49:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:23,179 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:49:23,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:23,179 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-13 18:49:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:23,200 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-11-13 18:49:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:23,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-11-13 18:49:23,203 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-11-13 18:49:23,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-11-13 18:49:23,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-11-13 18:49:23,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-11-13 18:49:23,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-11-13 18:49:23,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:23,205 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-13 18:49:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-11-13 18:49:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-13 18:49:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 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) [2021-11-13 18:49:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-11-13 18:49:23,210 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-13 18:49:23,210 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-13 18:49:23,210 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-13 18:49:23,211 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-11-13 18:49:23,212 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-11-13 18:49:23,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:23,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:23,212 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:23,213 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:23,213 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2443#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2460#L111 assume !false; 2541#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2540#L36 assume 8466 == main_~s__state~0#1; 2500#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2495#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2450#L111 [2021-11-13 18:49:23,213 INFO L793 eck$LassoCheckResult]: Loop: 2450#L111 assume !false; 2444#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2445#L36 assume !(8466 == main_~s__state~0#1); 2461#L41 assume !(8512 == main_~s__state~0#1); 2472#L57 assume !(8640 == main_~s__state~0#1); 2478#L61 assume 8656 == main_~s__state~0#1; 2546#L62 assume !(2 == main_~blastFlag~0#1); 2454#L100-1 assume !(4 == main_~blastFlag~0#1); 2455#L107 assume !(5 == main_~blastFlag~0#1); 2471#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2477#L111 assume !false; 2525#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2522#L36 assume !(8466 == main_~s__state~0#1); 2515#L41 assume !(8512 == main_~s__state~0#1); 2512#L57 assume 8640 == main_~s__state~0#1; 2482#L58 assume !(3 == main_~blastFlag~0#1); 2479#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2450#L111 [2021-11-13 18:49:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-11-13 18:49:23,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313013442] [2021-11-13 18:49:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,223 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,235 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-11-13 18:49:23,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082712752] [2021-11-13 18:49:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:23,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:23,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082712752] [2021-11-13 18:49:23,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082712752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:23,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:23,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:49:23,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3650166] [2021-11-13 18:49:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:23,266 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:49:23,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:23,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:23,268 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-13 18:49:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:23,283 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-11-13 18:49:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:23,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-11-13 18:49:23,286 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-13 18:49:23,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-11-13 18:49:23,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-11-13 18:49:23,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-11-13 18:49:23,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-11-13 18:49:23,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:23,290 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-11-13 18:49:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-11-13 18:49:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-11-13 18:49:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 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) [2021-11-13 18:49:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-11-13 18:49:23,295 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-11-13 18:49:23,295 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-11-13 18:49:23,295 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-13 18:49:23,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-11-13 18:49:23,298 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-13 18:49:23,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:23,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:23,299 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:23,299 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:23,299 INFO L791 eck$LassoCheckResult]: Stem: 2706#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2707#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2725#L111 assume !false; 2780#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2775#L36 assume 8466 == main_~s__state~0#1; 2773#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2770#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2714#L111 [2021-11-13 18:49:23,299 INFO L793 eck$LassoCheckResult]: Loop: 2714#L111 assume !false; 2708#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2709#L36 assume !(8466 == main_~s__state~0#1); 2726#L41 assume !(8512 == main_~s__state~0#1); 2735#L57 assume !(8640 == main_~s__state~0#1); 2712#L61 assume 8656 == main_~s__state~0#1; 2713#L62 assume !(2 == main_~blastFlag~0#1); 2807#L100-1 assume !(4 == main_~blastFlag~0#1); 2733#L107 assume !(5 == main_~blastFlag~0#1); 2734#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2714#L111 [2021-11-13 18:49:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-11-13 18:49:23,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683640364] [2021-11-13 18:49:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,335 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,349 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-11-13 18:49:23,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700018491] [2021-11-13 18:49:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,366 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:23,371 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-11-13 18:49:23,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:23,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509399605] [2021-11-13 18:49:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:23,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:23,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:23,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509399605] [2021-11-13 18:49:23,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509399605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:23,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:23,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:49:23,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041710651] [2021-11-13 18:49:23,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:23,482 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:23,482 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:23,482 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:23,482 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:23,482 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 18:49:23,482 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:23,482 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:23,482 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:23,483 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-11-13 18:49:23,483 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:23,483 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:23,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:23,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:23,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:23,583 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:23,583 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 18:49:23,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:23,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:23,586 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:23,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:49:23,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:23,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-13 18:49:23,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:23,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:23,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:23,663 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:23,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 18:49:23,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:49:23,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-13 18:49:23,689 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 18:49:23,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:23,736 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:49:23,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:49:23,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:49:23,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:49:23,737 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 18:49:23,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:23,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:49:23,737 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:49:23,737 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-11-13 18:49:23,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:49:23,737 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:49:23,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:23,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:23,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:49:23,845 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:49:23,846 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 18:49:23,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:23,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:23,847 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:23,852 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 [2021-11-13 18:49:23,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-13 18:49:23,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:49:23,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:49:23,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:49:23,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:49:23,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:49:23,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:49:23,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:49:23,876 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 18:49:23,880 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 18:49:23,880 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-13 18:49:23,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:49:23,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:49:23,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:49:23,903 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 18:49:23,903 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 18:49:23,903 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 18:49:23,904 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2021-11-13 18:49:23,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-13 18:49:23,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-13 18:49:23,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-11-13 18:49:23,961 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 18:49:23,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:24,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:49:24,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:24,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:49:24,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:49:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:24,105 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 [2021-11-13 18:49:24,106 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-13 18:49:24,146 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 148 states and 178 transitions. Complement of second has 6 states. [2021-11-13 18:49:24,146 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 [2021-11-13 18:49:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-13 18:49:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-11-13 18:49:24,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-11-13 18:49:24,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:24,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-11-13 18:49:24,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:24,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-11-13 18:49:24,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:49:24,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-11-13 18:49:24,150 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-13 18:49:24,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-11-13 18:49:24,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-11-13 18:49:24,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-13 18:49:24,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-11-13 18:49:24,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:24,152 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-13 18:49:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-11-13 18:49:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-13 18:49:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 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) [2021-11-13 18:49:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-11-13 18:49:24,157 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-13 18:49:24,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:24,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:49:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:49:24,158 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-13 18:49:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:24,180 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-11-13 18:49:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:49:24,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-11-13 18:49:24,182 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-11-13 18:49:24,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-11-13 18:49:24,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-11-13 18:49:24,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-11-13 18:49:24,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-11-13 18:49:24,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 18:49:24,185 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-13 18:49:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-11-13 18:49:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-13 18:49:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 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) [2021-11-13 18:49:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-11-13 18:49:24,187 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-13 18:49:24,187 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-13 18:49:24,188 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-13 18:49:24,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-11-13 18:49:24,188 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-11-13 18:49:24,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:49:24,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:49:24,189 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:24,190 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:24,190 INFO L791 eck$LassoCheckResult]: Stem: 3244#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3245#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 3248#L111 assume !false; 3240#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3241#L36 assume 8466 == main_~s__state~0#1; 3294#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 3293#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3291#L111 assume !false; 3250#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3292#L36 assume !(8466 == main_~s__state~0#1); 3290#L41 assume 8512 == main_~s__state~0#1; 3263#L42 [2021-11-13 18:49:24,190 INFO L793 eck$LassoCheckResult]: Loop: 3263#L42 main_~tmp___1~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 3255#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 3256#L111 assume !false; 3300#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3297#L36 assume 8466 == main_~s__state~0#1; 3266#L37 assume !(0 == main_~blastFlag~0#1); 3267#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3272#L111 assume !false; 3299#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3298#L36 assume !(8466 == main_~s__state~0#1); 3269#L41 assume 8512 == main_~s__state~0#1; 3263#L42 [2021-11-13 18:49:24,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:24,191 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-11-13 18:49:24,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:24,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699459278] [2021-11-13 18:49:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:24,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:24,201 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:24,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-11-13 18:49:24,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:24,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794854855] [2021-11-13 18:49:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:24,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:24,217 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:24,222 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:24,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-11-13 18:49:24,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:24,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934316352] [2021-11-13 18:49:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:24,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:24,232 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:49:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:24,245 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:49:24,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 06:49:24 BoogieIcfgContainer [2021-11-13 18:49:24,711 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-13 18:49:24,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:49:24,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:49:24,712 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:49:24,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:49:17" (3/4) ... [2021-11-13 18:49:24,716 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-13 18:49:24,758 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:49:24,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:49:24,759 INFO L158 Benchmark]: Toolchain (without parser) took 8136.73ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 62.7MB in the beginning and 88.3MB in the end (delta: -25.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-11-13 18:49:24,760 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 104.9MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:49:24,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.86ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 79.0MB in the end (delta: -16.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:49:24,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.06ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 77.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:49:24,762 INFO L158 Benchmark]: Boogie Preprocessor took 60.61ms. Allocated memory is still 104.9MB. Free memory was 77.8MB in the beginning and 76.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:49:24,762 INFO L158 Benchmark]: RCFGBuilder took 436.22ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 66.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:49:24,763 INFO L158 Benchmark]: BuchiAutomizer took 7190.18ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 66.4MB in the beginning and 90.4MB in the end (delta: -23.9MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2021-11-13 18:49:24,763 INFO L158 Benchmark]: Witness Printer took 46.72ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:49:24,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 104.9MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.86ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 79.0MB in the end (delta: -16.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.06ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 77.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.61ms. Allocated memory is still 104.9MB. Free memory was 77.8MB in the beginning and 76.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 436.22ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 66.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 7190.18ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 66.4MB in the beginning and 90.4MB in the end (delta: -23.9MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Witness Printer took 46.72ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8489 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function 8576 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 62 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.0s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.3s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 182 states and ocurred in iteration 5. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 437.81ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 548 SdHoareTripleChecker+Invalid, 337.64ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 352 mSDtfsCounter, 269 mSolverCounterSat, 25.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf91 smp100 dnf177 smp79 tf112 neg94 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=21331} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e9262f9=10, NULL=21332, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@743dc97e=0, s__hit=0, NULL=21333, s__state=8512, tmp___1=10, NULL=21331, \result=0, NULL=0, NULL=21334, blastFlag=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int blastFlag ; [L24] int tmp___1; [L26] s__state = 8466 [L27] blastFlag = 0 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND TRUE blastFlag == 0 [L70] blastFlag = 2 [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 Loop: [L80] tmp___1 = __VERIFIER_nondet_int() [L81] COND TRUE \read(tmp___1) [L82] s__state = 8466 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND FALSE !(blastFlag == 0) [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-13 18:49:24,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-13 18:49:25,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74491f1-7476-477d-8425-6c1619d2728e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)