./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 f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/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_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:02,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:02,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:02,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:02,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:02,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:02,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:02,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:02,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:02,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:02,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:02,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:02,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:02,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:02,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:02,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:02,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:02,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:02,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:02,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:02,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:02,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:02,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:02,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:02,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:02,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:02,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:02,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:02,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:02,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:02,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:02,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:02,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:02,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:02,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:02,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:02,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:02,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:02,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:02,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:02,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:02,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-09 09:09:02,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:02,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:02,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:02,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:02,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:02,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:02,419 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:02,419 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 09:09:02,419 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 09:09:02,420 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 09:09:02,420 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 09:09:02,420 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 09:09:02,420 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 09:09:02,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:02,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:02,428 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:02,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:02,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:02,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:02,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 09:09:02,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 09:09:02,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 09:09:02,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:02,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:02,431 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 09:09:02,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:02,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 09:09:02,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:02,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:02,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:02,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:02,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:02,436 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 09:09:02,436 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_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2021-11-09 09:09:02,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:02,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:02,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:02,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:02,746 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:02,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-11-09 09:09:02,821 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/data/d8134f926/5e7dfa45e6a44575956155927d6f8b3e/FLAG0b352521f [2021-11-09 09:09:03,419 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:03,420 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-11-09 09:09:03,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/data/d8134f926/5e7dfa45e6a44575956155927d6f8b3e/FLAG0b352521f [2021-11-09 09:09:03,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/data/d8134f926/5e7dfa45e6a44575956155927d6f8b3e [2021-11-09 09:09:03,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:03,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:03,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:03,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:03,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:03,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264d7280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:03, skipping insertion in model container [2021-11-09 09:09:03,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:03,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:04,072 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_b58b4cf7-b42b-46ce-be50-ce80bef1639f/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-11-09 09:09:04,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,094 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:04,115 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_b58b4cf7-b42b-46ce-be50-ce80bef1639f/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-11-09 09:09:04,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,132 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:04,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04 WrapperNode [2021-11-09 09:09:04,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:04,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:04,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:04,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:04,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:04,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:04,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:04,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:04,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:04,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:04,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:04,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:04,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:04,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:09:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:04,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:04,569 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-09 09:09:04,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:04 BoogieIcfgContainer [2021-11-09 09:09:04,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:04,573 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 09:09:04,573 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 09:09:04,578 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 09:09:04,579 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:09:04,579 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 09:09:03" (1/3) ... [2021-11-09 09:09:04,581 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3821fe33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:09:04, skipping insertion in model container [2021-11-09 09:09:04,581 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:09:04,582 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (2/3) ... [2021-11-09 09:09:04,582 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3821fe33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:09:04, skipping insertion in model container [2021-11-09 09:09:04,582 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:09:04,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:04" (3/3) ... [2021-11-09 09:09:04,584 INFO L389 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-11-09 09:09:04,642 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 09:09:04,642 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 09:09:04,643 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 09:09:04,643 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 09:09:04,643 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 09:09:04,643 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 09:09:04,644 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 09:09:04,644 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 09:09:04,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:04,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-09 09:09:04,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:04,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:04,749 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-09 09:09:04,749 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-09 09:09:04,749 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 09:09:04,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:04,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-09 09:09:04,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:04,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:04,755 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-09 09:09:04,756 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-09 09:09:04,780 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 [2021-11-09 09:09:04,781 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 [2021-11-09 09:09:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:04,789 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-09 09:09:04,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:04,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646373702] [2021-11-09 09:09:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:04,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:04,967 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:05,024 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-11-09 09:09:05,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:05,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716176552] [2021-11-09 09:09:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:05,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:05,038 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:05,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-11-09 09:09:05,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:05,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219276216] [2021-11-09 09:09:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:05,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:05,067 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:05,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:05,245 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:05,246 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:05,246 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:05,246 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:05,246 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 09:09:05,247 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,247 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:05,247 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:05,247 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-11-09 09:09:05,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:05,248 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:05,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:05,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:05,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:05,345 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:05,346 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 09:09:05,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:05,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:05,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-09 09:09:05,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:05,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:05,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 09:09:05,395 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: [] [2021-11-09 09:09:05,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:05,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:05,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:05,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-09 09:09:05,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:05,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:05,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:05,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:05,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:05,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-09 09:09:05,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 09:09:05,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:05,531 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 09:09:05,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:05,566 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:05,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:05,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:05,566 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:05,566 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 09:09:05,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:05,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:05,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-11-09 09:09:05,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:05,567 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:05,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:05,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:05,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:05,663 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:05,668 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 09:09:05,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:05,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:05,682 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:05,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:05,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:05,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:05,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:09:05,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:05,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:09:05,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:05,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-09 09:09:05,711 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 09:09:05,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:05,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:05,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:05,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-09 09:09:05,756 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:05,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:05,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:05,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:05,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:09:05,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:05,766 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:09:05,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:05,777 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 09:09:05,783 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 09:09:05,784 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 09:09:05,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:05,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:05,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:05,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-09 09:09:05,793 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 09:09:05,793 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 09:09:05,793 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 09:09:05,793 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2021-11-09 09:09:05,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:05,820 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 09:09:05,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:05,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:05,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:05,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:05,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:06,021 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-09 09:09:06,022 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,104 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2021-11-09 09:09:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 09:09:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-11-09 09:09:06,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-11-09 09:09:06,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:06,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-11-09 09:09:06,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:06,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-11-09 09:09:06,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:06,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-11-09 09:09:06,132 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-09 09:09:06,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-11-09 09:09:06,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-09 09:09:06,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-11-09 09:09:06,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-11-09 09:09:06,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:06,138 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-11-09 09:09:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-11-09 09:09:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-11-09 09:09:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-11-09 09:09:06,161 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-11-09 09:09:06,161 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-11-09 09:09:06,161 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-09 09:09:06,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-11-09 09:09:06,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-09 09:09:06,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:06,163 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:06,163 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-09 09:09:06,163 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-09 09:09:06,163 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 [2021-11-09 09:09:06,164 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 [2021-11-09 09:09:06,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-09 09:09:06,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:06,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049873093] [2021-11-09 09:09:06,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:06,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:06,179 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:06,201 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-11-09 09:09:06,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:06,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269887899] [2021-11-09 09:09:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:06,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:06,207 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:06,221 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-11-09 09:09:06,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:06,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329635407] [2021-11-09 09:09:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:06,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:06,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:06,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329635407] [2021-11-09 09:09:06,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329635407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:06,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:06,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:06,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711362121] [2021-11-09 09:09:06,319 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:06,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:06,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:06,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:06,320 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 09:09:06,321 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,321 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:06,322 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:06,322 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-11-09 09:09:06,325 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:06,325 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:06,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:06,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:06,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:06,400 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:06,400 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 09:09:06,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:06,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:06,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-09 09:09:06,433 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 09:09:06,433 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: [] [2021-11-09 09:09:06,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:06,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:06,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-09 09:09:06,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 09:09:06,509 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: [] [2021-11-09 09:09:06,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:06,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:06,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-09 09:09:06,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 09:09:06,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:06,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-09 09:09:06,626 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 09:09:06,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,647 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:06,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:06,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:06,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:06,647 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 09:09:06,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:06,647 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:06,647 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-11-09 09:09:06,647 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:06,647 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:06,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:06,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:06,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:06,732 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:06,733 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 09:09:06,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,734 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-09 09:09:06,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:06,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:06,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:06,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:06,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:09:06,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:06,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:09:06,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:06,769 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 09:09:06,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:06,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:06,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:06,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:06,822 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 09:09:06,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:06,823 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-09 09:09:06,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:06,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-09 09:09:06,837 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 09:09:06,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,877 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:06,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:06,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:06,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:06,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:09:06,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:06,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:09:06,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:06,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-09 09:09:06,915 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 09:09:06,919 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 09:09:06,919 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 09:09:06,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:06,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:06,920 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:06,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-09 09:09:06,925 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 09:09:06,925 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 09:09:06,925 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 09:09:06,925 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 [] [2021-11-09 09:09:06,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:06,961 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 09:09:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:06,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:06,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:07,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,077 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 09:09:07,077 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,139 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2021-11-09 09:09:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-09 09:09:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-11-09 09:09:07,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-11-09 09:09:07,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:07,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-11-09 09:09:07,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:07,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-11-09 09:09:07,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:07,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-11-09 09:09:07,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-09 09:09:07,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-11-09 09:09:07,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-11-09 09:09:07,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-11-09 09:09:07,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-11-09 09:09:07,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:07,152 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-11-09 09:09:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-11-09 09:09:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-11-09 09:09:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-11-09 09:09:07,159 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-11-09 09:09:07,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:07,163 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:07,209 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-11-09 09:09:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:07,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-11-09 09:09:07,212 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-09 09:09:07,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-11-09 09:09:07,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-11-09 09:09:07,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-11-09 09:09:07,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-11-09 09:09:07,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:07,215 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-11-09 09:09:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-11-09 09:09:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-09 09:09:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-11-09 09:09:07,227 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-11-09 09:09:07,227 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-11-09 09:09:07,228 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-09 09:09:07,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-11-09 09:09:07,229 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-09 09:09:07,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:07,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:07,230 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-09 09:09:07,230 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-09 09:09:07,230 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 [2021-11-09 09:09:07,230 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 [2021-11-09 09:09:07,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-11-09 09:09:07,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:07,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490763921] [2021-11-09 09:09:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:07,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:07,245 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:07,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:07,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:07,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-11-09 09:09:07,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:07,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847536828] [2021-11-09 09:09:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:07,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:07,288 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:07,293 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-11-09 09:09:07,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:07,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647199744] [2021-11-09 09:09:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:07,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:07,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647199744] [2021-11-09 09:09:07,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647199744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:07,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:07,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:07,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555122240] [2021-11-09 09:09:07,395 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:07,396 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:07,396 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:07,396 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:07,396 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 09:09:07,396 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,397 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:07,397 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:07,397 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-11-09 09:09:07,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:07,398 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:07,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:07,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:07,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:07,450 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:07,450 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 09:09:07,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:07,452 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:07,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-09 09:09:07,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:07,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:07,497 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 09:09:07,498 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: [] [2021-11-09 09:09:07,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:07,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:07,532 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:07,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-09 09:09:07,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:07,534 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:07,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:07,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:07,582 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:07,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 09:09:07,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:07,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-09 09:09:07,597 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 09:09:07,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:07,620 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:07,620 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:07,620 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:07,620 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:07,620 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 09:09:07,620 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,620 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:07,620 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:07,620 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-11-09 09:09:07,620 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:07,620 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:07,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:07,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:07,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:07,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:07,711 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:07,712 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 09:09:07,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:07,713 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:07,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-09 09:09:07,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:07,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:07,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:07,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:07,732 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 09:09:07,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:07,734 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-09 09:09:07,734 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:07,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 09:09:07,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:07,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:07,757 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:07,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-09 09:09:07,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:07,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:07,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:07,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:07,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:09:07,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:07,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:09:07,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:07,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 09:09:07,792 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-09 09:09:07,792 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 09:09:07,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:07,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:07,793 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:07,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-09 09:09:07,796 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 09:09:07,796 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 09:09:07,796 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 09:09:07,796 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 [] [2021-11-09 09:09:07,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:07,816 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 09:09:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:07,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:07,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,933 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 09:09:07,934 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,035 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2021-11-09 09:09:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-09 09:09:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-11-09 09:09:08,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-11-09 09:09:08,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:08,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-11-09 09:09:08,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:08,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-11-09 09:09:08,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:08,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-11-09 09:09:08,050 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-09 09:09:08,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-11-09 09:09:08,053 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-11-09 09:09:08,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-11-09 09:09:08,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-11-09 09:09:08,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:08,054 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-11-09 09:09:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-11-09 09:09:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-11-09 09:09:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-11-09 09:09:08,073 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-11-09 09:09:08,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,074 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,101 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-11-09 09:09:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:08,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-11-09 09:09:08,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-11-09 09:09:08,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-11-09 09:09:08,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-11-09 09:09:08,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-11-09 09:09:08,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-11-09 09:09:08,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:08,114 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-09 09:09:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-11-09 09:09:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-09 09:09:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-11-09 09:09:08,122 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-09 09:09:08,122 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-09 09:09:08,123 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-09 09:09:08,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-11-09 09:09:08,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-11-09 09:09:08,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:08,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:08,124 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,124 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,125 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 [2021-11-09 09:09:08,125 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 [2021-11-09 09:09:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-11-09 09:09:08,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613857471] [2021-11-09 09:09:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:08,159 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:08,177 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-11-09 09:09:08,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856091087] [2021-11-09 09:09:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:08,188 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:08,199 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-11-09 09:09:08,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940902735] [2021-11-09 09:09:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:08,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940902735] [2021-11-09 09:09:08,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940902735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:08,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434287045] [2021-11-09 09:09:08,299 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:08,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:08,300 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:08,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:08,300 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 09:09:08,300 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:08,300 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:08,300 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:08,300 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-11-09 09:09:08,300 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:08,300 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:08,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:08,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:08,345 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:08,345 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 09:09:08,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:08,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:08,347 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:08,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-09 09:09:08,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:08,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:08,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:08,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:08,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:08,382 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:08,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-09 09:09:08,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 09:09:08,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:08,417 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 09:09:08,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:08,450 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:08,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:08,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:08,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:08,450 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 09:09:08,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:08,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:08,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:08,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-11-09 09:09:08,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:08,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:08,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:08,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:08,489 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:08,490 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 09:09:08,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:08,491 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:08,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:08,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:08,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:08,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:08,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:09:08,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:08,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:09:08,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:08,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-09 09:09:08,521 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 09:09:08,534 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 09:09:08,534 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 09:09:08,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:08,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:08,536 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:08,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-09 09:09:08,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 09:09:08,537 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 09:09:08,538 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 09:09:08,538 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 [] [2021-11-09 09:09:08,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-11-09 09:09:08,560 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 09:09:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:08,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:08,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:08,685 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 09:09:08,685 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,761 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2021-11-09 09:09:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-09 09:09:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-11-09 09:09:08,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-11-09 09:09:08,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:08,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-11-09 09:09:08,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:08,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-11-09 09:09:08,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:08,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-11-09 09:09:08,770 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-11-09 09:09:08,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-11-09 09:09:08,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-11-09 09:09:08,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-11-09 09:09:08,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-11-09 09:09:08,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:08,773 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-11-09 09:09:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-11-09 09:09:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-11-09 09:09:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-11-09 09:09:08,793 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-11-09 09:09:08,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,794 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,834 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-11-09 09:09:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:08,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-11-09 09:09:08,838 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-11-09 09:09:08,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-11-09 09:09:08,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-11-09 09:09:08,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-09 09:09:08,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-11-09 09:09:08,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:08,842 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-11-09 09:09:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-11-09 09:09:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-11-09 09:09:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-11-09 09:09:08,852 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-11-09 09:09:08,852 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-11-09 09:09:08,852 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-09 09:09:08,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-11-09 09:09:08,854 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-11-09 09:09:08,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:08,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:08,855 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,855 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,855 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 [2021-11-09 09:09:08,855 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 [2021-11-09 09:09:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-11-09 09:09:08,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993798067] [2021-11-09 09:09:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:08,865 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:08,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:08,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-11-09 09:09:08,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146854372] [2021-11-09 09:09:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:08,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146854372] [2021-11-09 09:09:08,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146854372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:08,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941210068] [2021-11-09 09:09:08,892 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 09:09:08,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,893 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,927 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-11-09 09:09:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:08,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-11-09 09:09:08,930 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-11-09 09:09:08,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-11-09 09:09:08,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-11-09 09:09:08,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-11-09 09:09:08,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-11-09 09:09:08,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:08,933 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-09 09:09:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-11-09 09:09:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-09 09:09:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-11-09 09:09:08,946 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-09 09:09:08,946 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-09 09:09:08,946 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-09 09:09:08,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-11-09 09:09:08,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-11-09 09:09:08,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:08,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:08,965 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,965 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,966 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1875#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1880#L111 assume !false; 1881#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2008#L36 assume 8466 == main_~s__state~0; 1992#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1989#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L111 [2021-11-09 09:09:08,966 INFO L793 eck$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 [2021-11-09 09:09:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-11-09 09:09:08,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959041714] [2021-11-09 09:09:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:08,993 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,015 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-11-09 09:09:09,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764156610] [2021-11-09 09:09:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:09,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764156610] [2021-11-09 09:09:09,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764156610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947803180] [2021-11-09 09:09:09,049 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 09:09:09,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,050 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,078 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-11-09 09:09:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-11-09 09:09:09,080 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-11-09 09:09:09,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-11-09 09:09:09,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-11-09 09:09:09,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-11-09 09:09:09,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-11-09 09:09:09,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:09,082 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-11-09 09:09:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-11-09 09:09:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-11-09 09:09:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-11-09 09:09:09,085 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-11-09 09:09:09,085 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-11-09 09:09:09,086 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-09 09:09:09,086 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-11-09 09:09:09,088 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-11-09 09:09:09,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:09,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:09,090 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,090 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,090 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 [2021-11-09 09:09:09,091 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 [2021-11-09 09:09:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-11-09 09:09:09,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527421125] [2021-11-09 09:09:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,108 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:09,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-11-09 09:09:09,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165076874] [2021-11-09 09:09:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:09,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165076874] [2021-11-09 09:09:09,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165076874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346356022] [2021-11-09 09:09:09,176 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 09:09:09,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,177 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,196 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-11-09 09:09:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-11-09 09:09:09,198 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-11-09 09:09:09,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-11-09 09:09:09,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-11-09 09:09:09,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-11-09 09:09:09,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-11-09 09:09:09,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:09,200 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-09 09:09:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-11-09 09:09:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-09 09:09:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-11-09 09:09:09,204 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-09 09:09:09,204 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-09 09:09:09,204 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-09 09:09:09,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-11-09 09:09:09,205 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-11-09 09:09:09,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:09,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:09,207 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,208 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,208 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2443#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2460#L111 assume !false; 2541#L30 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2540#L36 assume 8466 == main_~s__state~0; 2500#L37 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2495#L69-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2450#L111 [2021-11-09 09:09:09,209 INFO L793 eck$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 [2021-11-09 09:09:09,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-11-09 09:09:09,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422165706] [2021-11-09 09:09:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,232 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,250 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-11-09 09:09:09,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108640587] [2021-11-09 09:09:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:09,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108640587] [2021-11-09 09:09:09,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108640587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:09:09,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669919400] [2021-11-09 09:09:09,277 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 09:09:09,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,277 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,291 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-11-09 09:09:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-11-09 09:09:09,294 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-09 09:09:09,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-11-09 09:09:09,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-11-09 09:09:09,295 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-11-09 09:09:09,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-11-09 09:09:09,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:09,296 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-11-09 09:09:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-11-09 09:09:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-11-09 09:09:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-11-09 09:09:09,299 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-11-09 09:09:09,299 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-11-09 09:09:09,299 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-09 09:09:09,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-11-09 09:09:09,300 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-09 09:09:09,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:09,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:09,301 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,301 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,301 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 [2021-11-09 09:09:09,301 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 [2021-11-09 09:09:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-11-09 09:09:09,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249424487] [2021-11-09 09:09:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,310 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-11-09 09:09:09,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918511322] [2021-11-09 09:09:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,331 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:09,336 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-11-09 09:09:09,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029808583] [2021-11-09 09:09:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:09,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029808583] [2021-11-09 09:09:09,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029808583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657581074] [2021-11-09 09:09:09,428 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:09,428 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:09,428 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:09,428 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:09,429 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 09:09:09,429 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,429 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:09,429 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:09,429 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-11-09 09:09:09,429 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:09,429 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:09,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:09,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:09,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:09,525 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:09,525 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 09:09:09,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,527 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:09,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:09,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-09 09:09:09,550 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 09:09:09,550 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: [] [2021-11-09 09:09:09,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-11-09 09:09:09,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,576 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:09:09,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:09,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-09 09:09:09,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:09,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,619 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-09 09:09:09,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 09:09:09,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:09:09,631 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 09:09:09,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-11-09 09:09:09,652 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:09:09,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:09:09,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:09:09,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:09:09,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 09:09:09,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,652 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:09:09,652 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:09:09,652 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-11-09 09:09:09,652 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:09:09,652 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:09:09,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:09,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:09,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:09:09,744 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:09:09,744 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 09:09:09,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,748 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,751 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:09,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:09,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:09,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:09,761 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 09:09:09,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:09,765 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-09 09:09:09,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:09,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-09 09:09:09,776 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 09:09:09,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:09,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,801 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 09:09:09,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:09:09,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:09:09,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:09:09,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:09:09,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:09:09,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:09:09,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:09:09,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-09 09:09:09,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 09:09:09,835 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-09 09:09:09,835 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 09:09:09,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,836 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 09:09:09,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 09:09:09,843 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 09:09:09,844 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 [] [2021-11-09 09:09:09,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-09 09:09:09,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:09,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 09:09:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:09,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:09,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:09,982 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-09 09:09:09,982 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,011 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2021-11-09 09:09:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-09 09:09:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-11-09 09:09:10,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-11-09 09:09:10,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:10,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-11-09 09:09:10,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:10,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-11-09 09:09:10,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:09:10,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-11-09 09:09:10,015 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-09 09:09:10,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-11-09 09:09:10,016 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-11-09 09:09:10,016 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-09 09:09:10,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-11-09 09:09:10,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:10,016 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-09 09:09:10,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-11-09 09:09:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-09 09:09:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-11-09 09:09:10,020 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-09 09:09:10,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:10,020 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:10,032 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-11-09 09:09:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:10,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-11-09 09:09:10,033 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-11-09 09:09:10,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-11-09 09:09:10,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-11-09 09:09:10,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-11-09 09:09:10,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-11-09 09:09:10,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:09:10,034 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-09 09:09:10,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-11-09 09:09:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-09 09:09:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-11-09 09:09:10,036 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-09 09:09:10,037 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-09 09:09:10,037 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-09 09:09:10,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-11-09 09:09:10,037 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-11-09 09:09:10,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:10,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:10,038 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:10,038 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:10,038 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 [2021-11-09 09:09:10,038 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 [2021-11-09 09:09:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-11-09 09:09:10,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:10,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934779135] [2021-11-09 09:09:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:10,045 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:10,081 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-11-09 09:09:10,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:10,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259680063] [2021-11-09 09:09:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:10,085 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:10,089 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-11-09 09:09:10,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:10,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290776255] [2021-11-09 09:09:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:10,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:10,120 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:10,136 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:10,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 09:09:10 BoogieIcfgContainer [2021-11-09 09:09:10,526 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 09:09:10,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:09:10,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:09:10,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:09:10,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:04" (3/4) ... [2021-11-09 09:09:10,531 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-09 09:09:10,578 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:09:10,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:09:10,580 INFO L168 Benchmark]: Toolchain (without parser) took 6779.51 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 82.2 MB in the beginning and 102.4 MB in the end (delta: -20.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:10,580 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 111.1 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:10,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.10 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 82.2 MB in the beginning and 108.6 MB in the end (delta: -26.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:10,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.61 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 107.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:10,582 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 106.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:10,583 INFO L168 Benchmark]: RCFGBuilder took 376.85 ms. Allocated memory is still 134.2 MB. Free memory was 106.2 MB in the beginning and 95.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:10,583 INFO L168 Benchmark]: BuchiAutomizer took 5952.69 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 95.7 MB in the beginning and 104.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:10,583 INFO L168 Benchmark]: Witness Printer took 51.41 ms. Allocated memory is still 161.5 MB. Free memory was 104.5 MB in the beginning and 102.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:10,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 111.1 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.10 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 82.2 MB in the beginning and 108.6 MB in the end (delta: -26.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.61 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 107.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.83 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 106.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 376.85 ms. Allocated memory is still 134.2 MB. Free memory was 106.2 MB in the beginning and 95.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5952.69 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 95.7 MB in the beginning and 104.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * Witness Printer took 51.41 ms. Allocated memory is still 161.5 MB. Free memory was 104.5 MB in the beginning and 102.4 MB in the end (delta: 2.1 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 5.8s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 4.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 182 states and ocurred in iteration 5. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 352 SDtfs, 248 SDslu, 196 SDs, 0 SdLazy, 269 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 30ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - 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@1e2d547a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@486fa132=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! [2021-11-09 09:09:10,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b58b4cf7-b42b-46ce-be50-ce80bef1639f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)