./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/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_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:14:32,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:14:32,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:14:32,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:14:32,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:14:32,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:14:32,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:14:32,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:14:32,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:14:32,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:14:32,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:14:32,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:14:32,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:14:32,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:14:32,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:14:32,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:14:32,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:14:32,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:14:32,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:14:32,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:14:32,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:14:32,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:14:32,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:14:32,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:14:32,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:14:32,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:14:32,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:14:32,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:14:32,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:14:32,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:14:32,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:14:32,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:14:32,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:14:32,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:14:32,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:14:32,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:14:32,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:14:32,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:14:32,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:14:32,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:14:32,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:14:32,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:14:32,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:14:32,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:14:32,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:14:32,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:14:32,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:14:32,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:14:32,399 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:14:32,399 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:14:32,399 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:14:32,400 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:14:32,400 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:14:32,400 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:14:32,400 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:14:32,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:14:32,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:14:32,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:14:32,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:14:32,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:14:32,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:14:32,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:14:32,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:14:32,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:14:32,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:14:32,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:14:32,403 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:14:32,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:14:32,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:14:32,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:14:32,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:14:32,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:14:32,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:14:32,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:14:32,406 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:14:32,406 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_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2021-10-28 23:14:32,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:14:32,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:14:32,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:14:32,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:14:32,805 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:14:32,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-28 23:14:32,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/data/5c1ab4845/f79839371d1b461aa1a194a6aa3213fa/FLAGd278d76b8 [2021-10-28 23:14:33,401 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:14:33,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-28 23:14:33,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/data/5c1ab4845/f79839371d1b461aa1a194a6aa3213fa/FLAGd278d76b8 [2021-10-28 23:14:33,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/data/5c1ab4845/f79839371d1b461aa1a194a6aa3213fa [2021-10-28 23:14:33,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:14:33,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:14:33,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:14:33,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:14:33,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:14:33,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:14:33" (1/1) ... [2021-10-28 23:14:33,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be6bb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:33, skipping insertion in model container [2021-10-28 23:14:33,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:14:33" (1/1) ... [2021-10-28 23:14:33,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:14:33,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:14:33,983 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_db16ddc8-11de-4b76-b44e-944a19360594/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-10-28 23:14:33,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:14:33,998 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:14:34,026 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_db16ddc8-11de-4b76-b44e-944a19360594/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-10-28 23:14:34,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:14:34,047 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:14:34,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34 WrapperNode [2021-10-28 23:14:34,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:14:34,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:14:34,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:14:34,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:14:34,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:14:34,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:14:34,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:14:34,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:14:34,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:14:34,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:14:34,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:14:34,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:14:34,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (1/1) ... [2021-10-28 23:14:34,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:34,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:34,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:14:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:14:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:14:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:14:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:14:34,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:14:34,587 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:14:34,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:14:34 BoogieIcfgContainer [2021-10-28 23:14:34,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:14:34,591 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:14:34,591 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:14:34,596 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:14:34,596 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:14:34,597 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:14:33" (1/3) ... [2021-10-28 23:14:34,598 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4882e246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:14:34, skipping insertion in model container [2021-10-28 23:14:34,598 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:14:34,599 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:14:34" (2/3) ... [2021-10-28 23:14:34,599 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4882e246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:14:34, skipping insertion in model container [2021-10-28 23:14:34,599 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:14:34,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:14:34" (3/3) ... [2021-10-28 23:14:34,601 INFO L389 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-10-28 23:14:34,669 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:14:34,669 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:14:34,669 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:14:34,669 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:14:34,670 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:14:34,670 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:14:34,670 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:14:34,670 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:14:34,690 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) [2021-10-28 23:14:34,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:14:34,711 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:34,711 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:34,717 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:14:34,718 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:14:34,718 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:14:34,718 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) [2021-10-28 23:14:34,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:14:34,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:34,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:34,722 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:14:34,722 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:14:34,730 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 7#L111true [2021-10-28 23:14:34,731 INFO L793 eck$LassoCheckResult]: Loop: 7#L111true assume !false; 5#L30true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 13#L36true assume 8466 == main_~s__state~0; 15#L37true assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 18#L69-1true assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 7#L111true [2021-10-28 23:14:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 23:14:34,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:34,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889674518] [2021-10-28 23:14:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:34,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:34,927 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:34,982 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-10-28 23:14:34,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:34,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409783118] [2021-10-28 23:14:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:35,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:35,008 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:35,015 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-10-28 23:14:35,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:35,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320742134] [2021-10-28 23:14:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:35,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:35,042 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:35,087 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:35,232 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:35,233 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:35,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:35,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:35,233 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:35,234 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,234 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:35,234 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:35,234 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-10-28 23:14:35,235 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:35,235 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:35,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:35,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:35,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:35,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:35,354 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:35,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:14:35,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:35,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:35,382 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:35,382 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:35,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:35,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:35,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:35,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:14:35,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:35,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:35,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:35,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:14:35,539 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:14:35,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-28 23:14:35,573 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:35,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:35,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:35,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:35,573 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:14:35,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:35,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:35,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-10-28 23:14:35,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:35,574 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:35,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:35,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:35,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:35,661 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:35,665 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:14:35,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:14:35,721 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:35,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:35,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:35,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:35,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:35,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:35,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:35,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:35,751 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:35,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:35,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,793 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,800 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:35,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:35,811 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:35,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:35,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:35,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:35,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:35,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:35,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:14:35,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:14:35,834 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:14:35,835 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:14:35,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:35,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:35,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:35,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:14:35,850 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:14:35,850 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:14:35,850 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:14:35,851 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2021-10-28 23:14:35,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:35,889 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:14:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:35,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:14:35,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:35,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:14:35,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:36,109 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:14:36,110 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) [2021-10-28 23:14:36,225 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. [2021-10-28 23:14:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:14:36,228 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) [2021-10-28 23:14:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-10-28 23:14:36,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-10-28 23:14:36,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:36,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-10-28 23:14:36,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:36,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-10-28 23:14:36,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:36,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-10-28 23:14:36,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:14:36,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-10-28 23:14:36,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-28 23:14:36,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-28 23:14:36,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-10-28 23:14:36,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:36,248 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-10-28 23:14:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-10-28 23:14:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-10-28 23:14:36,280 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) [2021-10-28 23:14:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-28 23:14:36,282 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-28 23:14:36,283 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-28 23:14:36,283 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:14:36,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-10-28 23:14:36,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:14:36,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:36,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:36,286 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:14:36,286 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:14:36,286 INFO L791 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 148#L111 assume !false; 120#L30 [2021-10-28 23:14:36,286 INFO L793 eck$LassoCheckResult]: Loop: 120#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 121#L36 assume 8466 == main_~s__state~0; 144#L37 assume !(0 == main_~blastFlag~0); 151#L69-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 130#L111 assume !false; 120#L30 [2021-10-28 23:14:36,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-10-28 23:14:36,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:36,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731309380] [2021-10-28 23:14:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:36,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,302 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:36,319 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-10-28 23:14:36,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:36,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891319814] [2021-10-28 23:14:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:36,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,325 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:36,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:36,332 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-10-28 23:14:36,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:36,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562186308] [2021-10-28 23:14:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:36,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:36,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:36,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:36,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562186308] [2021-10-28 23:14:36,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562186308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:36,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:36,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:14:36,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66414209] [2021-10-28 23:14:36,487 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:36,488 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:36,488 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:36,488 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:36,488 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:36,488 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:36,489 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:36,489 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:36,489 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-10-28 23:14:36,489 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:36,489 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:36,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:36,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:36,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:36,561 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:36,561 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:36,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:36,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:36,563 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:36,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:36,571 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:36,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:14:36,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:36,600 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:36,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 23:14:36,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:36,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:36,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:36,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:14:36,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:36,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:36,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:36,668 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:36,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:36,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:36,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:36,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:36,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:36,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:14:36,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:36,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:36,803 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:36,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:36,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:36,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:14:36,834 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:14:36,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:36,861 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:36,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:36,861 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:36,862 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:36,862 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:14:36,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:36,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:36,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:36,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-10-28 23:14:36,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:36,862 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:36,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:36,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:36,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:36,981 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:36,981 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:14:36,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:36,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:36,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:36,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:37,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:37,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:37,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:37,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:37,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:37,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:37,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:37,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:14:37,023 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:37,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:37,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:37,073 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:37,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:37,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:37,092 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:37,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:37,092 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:14:37,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:37,095 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:14:37,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:37,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:14:37,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:37,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:37,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:37,157 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:37,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:37,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:37,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:37,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:37,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:37,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:37,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:37,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:37,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:14:37,199 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:14:37,202 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:14:37,203 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:14:37,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:37,204 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:37,213 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:14:37,213 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:14:37,214 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:14:37,214 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8489 Supporting invariants [] [2021-10-28 23:14:37,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:14:37,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:37,257 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:14:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:37,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:14:37,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:37,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:14:37,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:37,369 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 [2021-10-28 23:14:37,370 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) [2021-10-28 23:14:37,433 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. [2021-10-28 23:14:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:14:37,434 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) [2021-10-28 23:14:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-10-28 23:14:37,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-28 23:14:37,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:37,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-28 23:14:37,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:37,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-28 23:14:37,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:37,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-10-28 23:14:37,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:14:37,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-10-28 23:14:37,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-28 23:14:37,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-10-28 23:14:37,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-10-28 23:14:37,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:37,448 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-10-28 23:14:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-10-28 23:14:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-10-28 23:14:37,454 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) [2021-10-28 23:14:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-10-28 23:14:37,456 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-10-28 23:14:37,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:37,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:37,461 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) [2021-10-28 23:14:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:37,496 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-10-28 23:14:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:37,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-10-28 23:14:37,501 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-28 23:14:37,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-10-28 23:14:37,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-10-28 23:14:37,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-10-28 23:14:37,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-10-28 23:14:37,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:37,505 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-10-28 23:14:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-10-28 23:14:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-10-28 23:14:37,512 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) [2021-10-28 23:14:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-10-28 23:14:37,514 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-10-28 23:14:37,515 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-10-28 23:14:37,515 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:14:37,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-10-28 23:14:37,518 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-28 23:14:37,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:37,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:37,519 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:14:37,519 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:14:37,519 INFO L791 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 481#L111 assume !false; 455#L30 [2021-10-28 23:14:37,519 INFO L793 eck$LassoCheckResult]: Loop: 455#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 456#L36 assume !(8466 == main_~s__state~0); 478#L41 assume 8512 == main_~s__state~0; 482#L42 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 476#L81 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 465#L111 assume !false; 455#L30 [2021-10-28 23:14:37,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-10-28 23:14:37,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:37,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770149297] [2021-10-28 23:14:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:37,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:37,548 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:37,560 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:37,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-10-28 23:14:37,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:37,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31400844] [2021-10-28 23:14:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:37,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:37,579 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:37,599 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-10-28 23:14:37,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:37,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195511924] [2021-10-28 23:14:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:37,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:37,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:37,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195511924] [2021-10-28 23:14:37,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195511924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:37,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:37,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:14:37,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800348444] [2021-10-28 23:14:37,706 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:37,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:37,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:37,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:37,707 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:37,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:37,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:37,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-10-28 23:14:37,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:37,708 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:37,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:37,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:37,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:37,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:37,774 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:37,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:37,776 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:37,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:37,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:37,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:14:37,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:37,823 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Honda state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:37,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:37,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:37,849 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:37,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:14:37,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:37,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:37,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:37,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:37,935 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:37,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:14:37,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:37,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:37,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:14:37,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:37,983 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:37,983 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:37,984 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:37,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:37,984 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:14:37,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:37,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:37,984 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:37,984 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-10-28 23:14:37,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:37,984 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:37,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:38,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:38,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:38,109 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:38,109 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:14:38,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:38,114 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:38,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-10-28 23:14:38,125 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:38,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:38,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:38,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:38,137 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:14:38,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:38,143 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:14:38,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:38,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:14:38,155 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:38,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:38,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:38,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:38,197 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:38,209 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:38,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:38,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:38,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:38,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:38,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:38,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:38,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:14:38,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:14:38,245 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:14:38,246 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:14:38,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:38,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:38,247 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:38,253 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:14:38,253 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:14:38,253 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:14:38,253 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-10-28 23:14:38,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:14:38,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:38,293 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:14:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:38,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:14:38,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:38,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:14:38,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:38,418 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 [2021-10-28 23:14:38,418 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) [2021-10-28 23:14:38,532 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. [2021-10-28 23:14:38,534 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 [2021-10-28 23:14:38,535 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) [2021-10-28 23:14:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-10-28 23:14:38,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-28 23:14:38,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:38,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-10-28 23:14:38,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:38,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-10-28 23:14:38,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:38,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-10-28 23:14:38,553 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-28 23:14:38,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-10-28 23:14:38,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-10-28 23:14:38,567 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-28 23:14:38,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-10-28 23:14:38,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:38,568 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-10-28 23:14:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-10-28 23:14:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-10-28 23:14:38,586 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) [2021-10-28 23:14:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-10-28 23:14:38,590 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-10-28 23:14:38,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:38,593 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) [2021-10-28 23:14:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:38,616 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-10-28 23:14:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:38,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-10-28 23:14:38,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-10-28 23:14:38,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-10-28 23:14:38,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-28 23:14:38,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-28 23:14:38,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-10-28 23:14:38,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:38,629 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-10-28 23:14:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-10-28 23:14:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 23:14:38,637 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) [2021-10-28 23:14:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-10-28 23:14:38,638 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-10-28 23:14:38,638 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-10-28 23:14:38,638 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:14:38,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-10-28 23:14:38,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-10-28 23:14:38,641 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:38,641 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:38,642 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:38,642 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:14:38,642 INFO L791 eck$LassoCheckResult]: Stem: 941#ULTIMATE.startENTRY #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 947#L111 assume !false; 939#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 940#L36 assume 8466 == main_~s__state~0; 969#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 987#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 983#L111 assume !false; 982#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 980#L36 assume !(8466 == main_~s__state~0); 975#L41 [2021-10-28 23:14:38,643 INFO L793 eck$LassoCheckResult]: Loop: 975#L41 assume 8512 == main_~s__state~0; 970#L42 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 961#L81 assume !(0 != main_~tmp___1~0);main_~s__state~0 := 8640; 963#L111 assume !false; 937#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 938#L36 assume !(8466 == main_~s__state~0); 975#L41 [2021-10-28 23:14:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-10-28 23:14:38,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:38,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530161034] [2021-10-28 23:14:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:38,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:38,659 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:38,688 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:38,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-10-28 23:14:38,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:38,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244021621] [2021-10-28 23:14:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:38,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:38,694 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:38,699 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-10-28 23:14:38,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:38,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068911435] [2021-10-28 23:14:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:38,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:38,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:38,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068911435] [2021-10-28 23:14:38,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068911435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:38,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:38,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:14:38,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883917939] [2021-10-28 23:14:38,803 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:38,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:38,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:38,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:38,804 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:38,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:38,805 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:38,805 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:38,805 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-10-28 23:14:38,805 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:38,805 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:38,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:38,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:38,850 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:38,850 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:38,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:38,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:38,855 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:38,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:38,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:38,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:14:38,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:38,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:38,902 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:38,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:14:38,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:38,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:38,939 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:14:38,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:38,964 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:38,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:38,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:38,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:38,964 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:14:38,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:38,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:38,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:38,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-10-28 23:14:38,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:38,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:38,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:38,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:39,014 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:39,014 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:14:39,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:39,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:39,016 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:39,026 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:39,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:39,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:39,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:39,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:39,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:39,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:39,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:39,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:14:39,051 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:14:39,064 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:14:39,064 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:14:39,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:39,067 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:39,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:14:39,068 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:14:39,068 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:14:39,069 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2021-10-28 23:14:39,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:14:39,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:39,112 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:14:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:39,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:14:39,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:39,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:14:39,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:39,252 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 [2021-10-28 23:14:39,253 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) [2021-10-28 23:14:39,362 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. [2021-10-28 23:14:39,363 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 [2021-10-28 23:14:39,364 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) [2021-10-28 23:14:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-10-28 23:14:39,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-10-28 23:14:39,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:39,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-10-28 23:14:39,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:39,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-10-28 23:14:39,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:39,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-10-28 23:14:39,373 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-10-28 23:14:39,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-10-28 23:14:39,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-10-28 23:14:39,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-10-28 23:14:39,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-10-28 23:14:39,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:39,379 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-10-28 23:14:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-10-28 23:14:39,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-10-28 23:14:39,402 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) [2021-10-28 23:14:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-10-28 23:14:39,404 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-10-28 23:14:39,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:39,405 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) [2021-10-28 23:14:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:39,438 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-10-28 23:14:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:39,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-10-28 23:14:39,442 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-10-28 23:14:39,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-10-28 23:14:39,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-10-28 23:14:39,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 23:14:39,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-10-28 23:14:39,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:39,452 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-10-28 23:14:39,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-10-28 23:14:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-10-28 23:14:39,466 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) [2021-10-28 23:14:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-10-28 23:14:39,475 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-10-28 23:14:39,475 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-10-28 23:14:39,475 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:14:39,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-10-28 23:14:39,476 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-10-28 23:14:39,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:39,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:39,477 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,496 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,497 INFO L791 eck$LassoCheckResult]: Stem: 1552#ULTIMATE.startENTRY #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1577#L111 assume !false; 1674#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1672#L36 assume 8466 == main_~s__state~0; 1648#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1645#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1558#L111 [2021-10-28 23:14:39,497 INFO L793 eck$LassoCheckResult]: Loop: 1558#L111 assume !false; 1548#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1549#L36 assume !(8466 == main_~s__state~0); 1575#L41 assume !(8512 == main_~s__state~0); 1591#L57 assume !(8640 == main_~s__state~0); 1554#L61 assume 8656 == main_~s__state~0; 1555#L62 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1564#L100-1 assume 4 == main_~blastFlag~0;main_~blastFlag~0 := 5; 1566#L104-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1590#L111 assume !false; 1624#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1625#L36 assume 8466 == main_~s__state~0; 1581#L37 assume !(0 == main_~blastFlag~0); 1582#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1558#L111 [2021-10-28 23:14:39,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-10-28 23:14:39,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871378610] [2021-10-28 23:14:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,514 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,525 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-10-28 23:14:39,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436940714] [2021-10-28 23:14:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:39,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:39,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436940714] [2021-10-28 23:14:39,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436940714] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:39,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:39,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:14:39,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537323228] [2021-10-28 23:14:39,547 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:14:39,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:39,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:39,548 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) [2021-10-28 23:14:39,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:39,610 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-10-28 23:14:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:39,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-10-28 23:14:39,614 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-10-28 23:14:39,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-10-28 23:14:39,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-10-28 23:14:39,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-10-28 23:14:39,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-10-28 23:14:39,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:39,618 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-10-28 23:14:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-10-28 23:14:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-10-28 23:14:39,632 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) [2021-10-28 23:14:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-10-28 23:14:39,634 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-10-28 23:14:39,634 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-10-28 23:14:39,634 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:14:39,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-10-28 23:14:39,636 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-10-28 23:14:39,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:39,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:39,638 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,638 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,638 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1875#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1880#L111 assume !false; 1881#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2008#L36 assume 8466 == main_~s__state~0; 1992#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1989#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L111 [2021-10-28 23:14:39,638 INFO L793 eck$LassoCheckResult]: Loop: 1940#L111 assume !false; 1960#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1958#L36 assume !(8466 == main_~s__state~0); 1955#L41 assume !(8512 == main_~s__state~0); 1952#L57 assume !(8640 == main_~s__state~0); 1876#L61 assume 8656 == main_~s__state~0; 1877#L62 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1883#L100-1 assume !(4 == main_~blastFlag~0); 1884#L107 assume !(5 == main_~blastFlag~0); 1918#L104-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1919#L111 assume !false; 1978#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1979#L36 assume 8466 == main_~s__state~0; 1968#L37 assume !(0 == main_~blastFlag~0); 1965#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L111 [2021-10-28 23:14:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-10-28 23:14:39,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18836022] [2021-10-28 23:14:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,678 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:39,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-10-28 23:14:39,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769549165] [2021-10-28 23:14:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:39,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:39,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769549165] [2021-10-28 23:14:39,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769549165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:39,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:39,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:14:39,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513420049] [2021-10-28 23:14:39,741 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:14:39,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:39,744 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) [2021-10-28 23:14:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:39,783 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-10-28 23:14:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:39,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-10-28 23:14:39,786 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-10-28 23:14:39,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-10-28 23:14:39,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-10-28 23:14:39,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-28 23:14:39,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-10-28 23:14:39,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:39,789 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-10-28 23:14:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-10-28 23:14:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-10-28 23:14:39,792 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) [2021-10-28 23:14:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-10-28 23:14:39,793 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-10-28 23:14:39,793 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-10-28 23:14:39,793 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:14:39,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-10-28 23:14:39,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-10-28 23:14:39,794 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:39,794 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:39,796 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,796 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,796 INFO L791 eck$LassoCheckResult]: Stem: 2215#ULTIMATE.startENTRY #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2234#L111 assume !false; 2300#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2237#L36 assume 8466 == main_~s__state~0; 2238#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2266#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2268#L111 [2021-10-28 23:14:39,796 INFO L793 eck$LassoCheckResult]: Loop: 2268#L111 assume !false; 2310#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2308#L36 assume !(8466 == main_~s__state~0); 2306#L41 assume !(8512 == main_~s__state~0); 2252#L57 assume !(8640 == main_~s__state~0); 2221#L61 assume 8656 == main_~s__state~0; 2222#L62 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 2228#L100-1 assume !(4 == main_~blastFlag~0); 2229#L107 assume !(5 == main_~blastFlag~0); 2245#L104-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2223#L111 assume !false; 2224#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2235#L36 assume !(8466 == main_~s__state~0); 2236#L41 assume !(8512 == main_~s__state~0); 2246#L57 assume 8640 == main_~s__state~0; 2304#L58 assume !(3 == main_~blastFlag~0); 2311#L89-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2268#L111 [2021-10-28 23:14:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-10-28 23:14:39,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854777355] [2021-10-28 23:14:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,814 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,833 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-10-28 23:14:39,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786580334] [2021-10-28 23:14:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:39,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:39,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786580334] [2021-10-28 23:14:39,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786580334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:39,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:39,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:14:39,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925928980] [2021-10-28 23:14:39,878 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:14:39,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:39,882 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) [2021-10-28 23:14:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:39,906 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-10-28 23:14:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:39,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-10-28 23:14:39,908 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-10-28 23:14:39,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-10-28 23:14:39,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-10-28 23:14:39,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-10-28 23:14:39,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-10-28 23:14:39,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:39,911 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-10-28 23:14:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-10-28 23:14:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-28 23:14:39,914 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) [2021-10-28 23:14:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-10-28 23:14:39,915 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-10-28 23:14:39,915 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-10-28 23:14:39,915 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:14:39,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-10-28 23:14:39,917 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-10-28 23:14:39,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:39,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:39,919 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,919 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,920 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2443#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2460#L111 assume !false; 2541#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2540#L36 assume 8466 == main_~s__state~0; 2500#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2495#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2450#L111 [2021-10-28 23:14:39,921 INFO L793 eck$LassoCheckResult]: Loop: 2450#L111 assume !false; 2444#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2445#L36 assume !(8466 == main_~s__state~0); 2461#L41 assume !(8512 == main_~s__state~0); 2472#L57 assume !(8640 == main_~s__state~0); 2478#L61 assume 8656 == main_~s__state~0; 2546#L62 assume !(2 == main_~blastFlag~0); 2454#L100-1 assume !(4 == main_~blastFlag~0); 2455#L107 assume !(5 == main_~blastFlag~0); 2471#L104-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2477#L111 assume !false; 2525#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2522#L36 assume !(8466 == main_~s__state~0); 2515#L41 assume !(8512 == main_~s__state~0); 2512#L57 assume 8640 == main_~s__state~0; 2482#L58 assume !(3 == main_~blastFlag~0); 2479#L89-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2450#L111 [2021-10-28 23:14:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-10-28 23:14:39,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526646988] [2021-10-28 23:14:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,948 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:39,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-10-28 23:14:39,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235077486] [2021-10-28 23:14:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:39,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:39,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235077486] [2021-10-28 23:14:39,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235077486] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:39,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:39,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:14:39,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925268018] [2021-10-28 23:14:39,974 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:14:39,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:39,976 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) [2021-10-28 23:14:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:39,983 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-10-28 23:14:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:39,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-10-28 23:14:39,987 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-10-28 23:14:39,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-10-28 23:14:39,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-10-28 23:14:39,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-10-28 23:14:39,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-10-28 23:14:39,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:39,991 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-10-28 23:14:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-10-28 23:14:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-10-28 23:14:39,994 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) [2021-10-28 23:14:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-10-28 23:14:39,995 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-10-28 23:14:39,995 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-10-28 23:14:39,995 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:14:39,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-10-28 23:14:39,996 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-10-28 23:14:39,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:39,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:39,997 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,997 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:39,997 INFO L791 eck$LassoCheckResult]: Stem: 2706#ULTIMATE.startENTRY #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2725#L111 assume !false; 2780#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2775#L36 assume 8466 == main_~s__state~0; 2773#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2770#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2714#L111 [2021-10-28 23:14:39,997 INFO L793 eck$LassoCheckResult]: Loop: 2714#L111 assume !false; 2708#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2709#L36 assume !(8466 == main_~s__state~0); 2726#L41 assume !(8512 == main_~s__state~0); 2735#L57 assume !(8640 == main_~s__state~0); 2712#L61 assume 8656 == main_~s__state~0; 2713#L62 assume !(2 == main_~blastFlag~0); 2807#L100-1 assume !(4 == main_~blastFlag~0); 2733#L107 assume !(5 == main_~blastFlag~0); 2734#L104-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2714#L111 [2021-10-28 23:14:39,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-10-28 23:14:39,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:39,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601829597] [2021-10-28 23:14:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:39,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:40,007 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:40,024 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-10-28 23:14:40,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:40,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109051087] [2021-10-28 23:14:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:40,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:40,037 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:40,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:40,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:40,047 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-10-28 23:14:40,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:40,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440629682] [2021-10-28 23:14:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:40,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:40,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:14:40,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440629682] [2021-10-28 23:14:40,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440629682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:14:40,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:14:40,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:14:40,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659246178] [2021-10-28 23:14:40,137 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:40,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:40,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:40,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:40,137 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:14:40,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:40,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:40,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-10-28 23:14:40,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:40,138 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:40,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:40,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:40,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:40,229 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:40,229 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:14:40,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:40,231 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:40,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:40,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:40,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:14:40,267 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:14:40,267 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=4} Honda state: {ULTIMATE.start_main_~s__hit~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:14:40,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:40,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:40,311 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:40,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:14:40,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:40,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:14:40,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:40,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:40,380 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:40,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:14:40,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:14:40,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:14:40,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:14:40,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:40,458 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:14:40,458 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:14:40,459 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:14:40,459 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:14:40,459 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:14:40,459 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,459 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:14:40,459 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:14:40,459 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-10-28 23:14:40,459 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:14:40,459 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:14:40,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:40,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:40,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:14:40,570 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:14:40,570 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:14:40,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:40,575 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:40,581 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:40,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:40,593 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:40,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:40,593 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:14:40,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:40,598 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:14:40,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:40,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:14:40,611 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:14:40,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:40,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:40,657 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:40,664 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:14:40,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:14:40,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:14:40,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:14:40,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:14:40,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:14:40,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:14:40,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:14:40,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:14:40,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:14:40,700 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:14:40,700 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:14:40,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:14:40,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:14:40,704 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:14:40,719 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:14:40,719 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:14:40,720 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:14:40,720 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-10-28 23:14:40,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:14:40,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-28 23:14:40,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:14:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:40,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:14:40,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:14:40,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:14:40,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:14:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:14:40,891 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:14:40,891 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) [2021-10-28 23:14:40,942 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. [2021-10-28 23:14:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:14:40,944 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) [2021-10-28 23:14:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-10-28 23:14:40,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-10-28 23:14:40,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:40,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-10-28 23:14:40,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:40,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-10-28 23:14:40,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:14:40,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-10-28 23:14:40,950 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-10-28 23:14:40,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-10-28 23:14:40,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 23:14:40,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 23:14:40,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-10-28 23:14:40,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:40,953 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-10-28 23:14:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-10-28 23:14:40,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-28 23:14:40,957 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) [2021-10-28 23:14:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-10-28 23:14:40,958 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-10-28 23:14:40,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:14:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:14:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:14:40,960 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) [2021-10-28 23:14:40,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:14:40,979 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-10-28 23:14:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:14:40,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-10-28 23:14:40,981 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-28 23:14:40,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-10-28 23:14:40,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-10-28 23:14:40,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-28 23:14:40,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-10-28 23:14:40,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:14:40,984 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-28 23:14:40,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-10-28 23:14:40,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 23:14:40,986 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) [2021-10-28 23:14:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-10-28 23:14:40,987 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-28 23:14:40,988 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-28 23:14:40,988 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:14:40,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-10-28 23:14:40,989 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-28 23:14:40,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:14:40,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:14:40,990 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:40,990 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:14:40,991 INFO L791 eck$LassoCheckResult]: Stem: 3244#ULTIMATE.startENTRY #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 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 3248#L111 assume !false; 3240#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3241#L36 assume 8466 == main_~s__state~0; 3294#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 3293#L69-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3291#L111 assume !false; 3250#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3292#L36 assume !(8466 == main_~s__state~0); 3290#L41 assume 8512 == main_~s__state~0; 3263#L42 [2021-10-28 23:14:40,991 INFO L793 eck$LassoCheckResult]: Loop: 3263#L42 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 3255#L81 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 3256#L111 assume !false; 3300#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3297#L36 assume 8466 == main_~s__state~0; 3266#L37 assume !(0 == main_~blastFlag~0); 3267#L69-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3272#L111 assume !false; 3299#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3298#L36 assume !(8466 == main_~s__state~0); 3269#L41 assume 8512 == main_~s__state~0; 3263#L42 [2021-10-28 23:14:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-10-28 23:14:40,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:40,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914424889] [2021-10-28 23:14:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:40,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:41,016 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:41,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:41,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-10-28 23:14:41,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:41,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452799329] [2021-10-28 23:14:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:41,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:41,057 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:41,065 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:14:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-10-28 23:14:41,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:14:41,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987043982] [2021-10-28 23:14:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:14:41,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:14:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:41,084 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:14:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:14:41,116 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:14:41,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:14:41,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:14:41 BoogieIcfgContainer [2021-10-28 23:14:41,708 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:14:41,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:14:41,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:14:41,710 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:14:41,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:14:34" (3/4) ... [2021-10-28 23:14:41,715 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:14:41,764 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:14:41,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:14:41,766 INFO L168 Benchmark]: Toolchain (without parser) took 8016.56 ms. Allocated memory was 88.1 MB in the beginning and 148.9 MB in the end (delta: 60.8 MB). Free memory was 49.9 MB in the beginning and 101.2 MB in the end (delta: -51.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:41,767 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 66.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:14:41,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.42 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 49.7 MB in the beginning and 100.0 MB in the end (delta: -50.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:41,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.25 ms. Allocated memory is still 123.7 MB. Free memory was 100.0 MB in the beginning and 98.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:41,769 INFO L168 Benchmark]: Boogie Preprocessor took 59.34 ms. Allocated memory is still 123.7 MB. Free memory was 98.5 MB in the beginning and 97.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:41,769 INFO L168 Benchmark]: RCFGBuilder took 424.50 ms. Allocated memory is still 123.7 MB. Free memory was 97.4 MB in the beginning and 86.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:41,770 INFO L168 Benchmark]: BuchiAutomizer took 7117.29 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 86.9 MB in the beginning and 103.3 MB in the end (delta: -16.3 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:41,771 INFO L168 Benchmark]: Witness Printer took 54.58 ms. Allocated memory is still 148.9 MB. Free memory was 103.3 MB in the beginning and 101.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:14:41,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 66.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.42 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 49.7 MB in the beginning and 100.0 MB in the end (delta: -50.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.25 ms. Allocated memory is still 123.7 MB. Free memory was 100.0 MB in the beginning and 98.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.34 ms. Allocated memory is still 123.7 MB. Free memory was 98.5 MB in the beginning and 97.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 424.50 ms. Allocated memory is still 123.7 MB. Free memory was 97.4 MB in the beginning and 86.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7117.29 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 86.9 MB in the beginning and 103.3 MB in the end (delta: -16.3 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. * Witness Printer took 54.58 ms. Allocated memory is still 148.9 MB. Free memory was 103.3 MB in the beginning and 101.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 8489 + -1 * s__state 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 5.1s. Construction of modules took 0.3s. Büchi inclusion checks took 1.1s. 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 0.1s 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: 352 SDtfs, 248 SDslu, 196 SDs, 0 SdLazy, 269 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time 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: 43ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 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=9999} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=10000, NULL=0, \result=0, tmp___1=9, NULL=10002, NULL=9999, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@817b88c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a3531a6=9, NULL=0, s__hit=0, NULL=10001, blastFlag=2, s__state=8512} - 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! [2021-10-28 23:14:41,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db16ddc8-11de-4b76-b44e-944a19360594/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...