./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/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_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt --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 fe54aa6cbf5093caec91497905a5a8a5f126c540 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:07:04,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:07:04,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:07:04,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:07:04,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:07:04,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:07:04,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:07:04,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:07:04,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:07:04,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:07:04,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:07:04,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:07:04,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:07:04,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:07:04,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:07:04,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:07:04,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:07:04,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:07:04,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:07:04,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:07:04,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:07:04,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:07:04,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:07:04,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:07:04,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:07:04,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:07:04,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:07:04,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:07:04,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:07:04,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:07:04,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:07:04,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:07:04,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:07:04,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:07:04,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:07:04,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:07:04,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:07:04,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:07:04,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:07:04,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:07:04,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:07:04,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 00:07:04,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:07:04,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:07:04,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:07:04,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:07:04,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:07:04,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:07:04,897 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:07:04,897 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:07:04,898 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:07:04,898 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:07:04,899 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:07:04,899 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:07:04,900 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:07:04,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:07:04,900 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:07:04,900 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:07:04,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:07:04,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:07:04,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:07:04,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:07:04,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:07:04,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:07:04,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:07:04,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:07:04,902 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:07:04,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:07:04,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:07:04,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:07:04,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:07:04,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:07:04,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:07:04,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:07:04,907 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:07:04,907 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_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe54aa6cbf5093caec91497905a5a8a5f126c540 [2021-10-13 00:07:05,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:07:05,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:07:05,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:07:05,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:07:05,251 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:07:05,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-13 00:07:05,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/data/2124f3daf/c4402e5a749b431daf22b55cc047ed51/FLAG053d7a255 [2021-10-13 00:07:05,781 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:07:05,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-13 00:07:05,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/data/2124f3daf/c4402e5a749b431daf22b55cc047ed51/FLAG053d7a255 [2021-10-13 00:07:06,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/data/2124f3daf/c4402e5a749b431daf22b55cc047ed51 [2021-10-13 00:07:06,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:07:06,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:07:06,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:07:06,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:07:06,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:07:06,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5344f103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06, skipping insertion in model container [2021-10-13 00:07:06,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:07:06,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:07:06,444 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_58d0505e-161d-4844-9878-ff1dab50597f/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-10-13 00:07:06,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:07:06,458 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:07:06,482 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_58d0505e-161d-4844-9878-ff1dab50597f/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-10-13 00:07:06,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:07:06,500 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:07:06,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06 WrapperNode [2021-10-13 00:07:06,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:07:06,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:07:06,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:07:06,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:07:06,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:07:06,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:07:06,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:07:06,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:07:06,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:07:06,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:07:06,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:07:06,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:07:06,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (1/1) ... [2021-10-13 00:07:06,584 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:06,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:06,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:06,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:07:06,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:07:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:07:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:07:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:07:07,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:07:07,035 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 00:07:07,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:07 BoogieIcfgContainer [2021-10-13 00:07:07,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:07:07,044 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:07:07,044 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:07:07,056 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:07:07,057 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:07:07,057 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:07:06" (1/3) ... [2021-10-13 00:07:07,073 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@162a10af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:07:07, skipping insertion in model container [2021-10-13 00:07:07,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:07:07,074 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:06" (2/3) ... [2021-10-13 00:07:07,075 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@162a10af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:07:07, skipping insertion in model container [2021-10-13 00:07:07,075 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:07:07,075 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:07" (3/3) ... [2021-10-13 00:07:07,077 INFO L389 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-10-13 00:07:07,135 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:07:07,136 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:07:07,136 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:07:07,136 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:07:07,136 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:07:07,136 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:07:07,136 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:07:07,137 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:07:07,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:07,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 00:07:07,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:07,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:07,190 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:07,190 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-13 00:07:07,190 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:07:07,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:07,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 00:07:07,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:07,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:07,197 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:07,197 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-13 00:07:07,205 INFO L791 eck$LassoCheckResult]: Stem: 5#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); 13#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#L101true [2021-10-13 00:07:07,205 INFO L793 eck$LassoCheckResult]: Loop: 7#L101true assume !false; 23#L20true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 11#L26true assume 8466 == main_~s__state~0; 8#L27true assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 18#L59-1true assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 7#L101true [2021-10-13 00:07:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-13 00:07:07,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:07,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378812973] [2021-10-13 00:07:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:07,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:07,359 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:07,424 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-10-13 00:07:07,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:07,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958018124] [2021-10-13 00:07:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:07,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:07,460 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:07,481 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:07,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:07,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-10-13 00:07:07,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:07,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869075298] [2021-10-13 00:07:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:07,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:07,516 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:07,576 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:07,706 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:07,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:07,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:07,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:07,710 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:07,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:07,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:07,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:07,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-10-13 00:07:07,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:07,711 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:07,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:07,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:07,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:07,838 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:07,839 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:07,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:07,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:07,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:07,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:07,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:07,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:07:07,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:07,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:07,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:07,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:07,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:07,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:07,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:07,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:07,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:07:07,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:07,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:07,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:08,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:08,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:08,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:07:08,017 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:08,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:08,041 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:08,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:08,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:08,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:08,041 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:08,042 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:08,042 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:08,042 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:08,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-10-13 00:07:08,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:08,042 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:08,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:08,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:08,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:08,145 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:08,150 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:08,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:08,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:08,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:08,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:07:08,154 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:08,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:08,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:08,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:08,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:08,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:08,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:08,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:08,173 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:08,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:08,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:08,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:08,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:07:08,211 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:08,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:08,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:08,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:08,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:08,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:08,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:08,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:08,223 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:08,225 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:07:08,226 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:07:08,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:08,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:08,228 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:08,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 00:07:08,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:08,233 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:08,233 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:08,233 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2021-10-13 00:07:08,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:08,258 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:08,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:08,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:08,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:08,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:08,484 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 00:07:08,485 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:08,580 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2021-10-13 00:07:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:07:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-10-13 00:07:08,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-10-13 00:07:08,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:08,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-10-13 00:07:08,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:08,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-10-13 00:07:08,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:08,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-10-13 00:07:08,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 00:07:08,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-10-13 00:07:08,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-13 00:07:08,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-13 00:07:08,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-10-13 00:07:08,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:08,599 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-10-13 00:07:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-10-13 00:07:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-10-13 00:07:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-13 00:07:08,628 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-13 00:07:08,628 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-13 00:07:08,628 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:07:08,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-10-13 00:07:08,630 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 00:07:08,630 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:08,630 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:08,631 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:07:08,631 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-13 00:07:08,631 INFO L791 eck$LassoCheckResult]: Stem: 126#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); 127#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; 153#L101 assume !false; 129#L20 [2021-10-13 00:07:08,632 INFO L793 eck$LassoCheckResult]: Loop: 129#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 141#L26 assume 8466 == main_~s__state~0; 132#L27 assume !(0 == main_~blastFlag~0); 133#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 128#L101 assume !false; 129#L20 [2021-10-13 00:07:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:08,632 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-10-13 00:07:08,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:08,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498761080] [2021-10-13 00:07:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:08,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:08,646 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:08,658 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-10-13 00:07:08,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:08,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462252253] [2021-10-13 00:07:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:08,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:08,664 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:08,669 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:08,670 INFO L82 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-10-13 00:07:08,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:08,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471257191] [2021-10-13 00:07:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:08,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:08,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:08,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471257191] [2021-10-13 00:07:08,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471257191] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:08,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:08,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:08,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:08,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072630533] [2021-10-13 00:07:08,810 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:08,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:08,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:08,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:08,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:08,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:08,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:08,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:08,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-10-13 00:07:08,818 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:08,818 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:08,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:08,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:08,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:08,903 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:08,903 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:08,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:08,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:08,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:08,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:08,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:08,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 00:07:08,938 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:08,938 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:08,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:08,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:08,963 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:08,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 00:07:08,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:08,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:08,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:08,994 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:09,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-13 00:07:09,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:09,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:09,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:09,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:09,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 00:07:09,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:09,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:09,120 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:09,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:09,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:09,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 00:07:09,149 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:09,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:09,187 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:09,187 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:09,187 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:09,187 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:09,187 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:09,187 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,187 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:09,187 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:09,187 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-10-13 00:07:09,187 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:09,187 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:09,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:09,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:09,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:09,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:09,275 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:09,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:09,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:09,289 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:09,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:09,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:09,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:09,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:09,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:09,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:09,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:09,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 00:07:09,317 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:09,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:09,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:09,346 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:09,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 00:07:09,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:09,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:09,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:09,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:09,362 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 00:07:09,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:09,365 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:07:09,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:09,386 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:09,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:09,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:09,426 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:09,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:09,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 00:07:09,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:09,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:09,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:09,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:09,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:09,443 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:09,443 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:09,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:09,458 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:07:09,458 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:07:09,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:09,459 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:09,467 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:09,468 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:09,468 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:09,468 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8489 Supporting invariants [] [2021-10-13 00:07:09,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 00:07:09,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:09,494 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:09,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:09,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:09,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:09,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:09,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:09,634 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 00:07:09,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:09,687 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2021-10-13 00:07:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 00:07:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-10-13 00:07:09,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-13 00:07:09,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:09,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-13 00:07:09,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:09,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-13 00:07:09,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:09,691 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-10-13 00:07:09,696 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 00:07:09,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-10-13 00:07:09,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-13 00:07:09,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-10-13 00:07:09,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-10-13 00:07:09,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:09,704 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-10-13 00:07:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-10-13 00:07:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-10-13 00:07:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-10-13 00:07:09,710 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-10-13 00:07:09,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:09,723 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:09,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:09,765 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-10-13 00:07:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:09,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-10-13 00:07:09,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-13 00:07:09,773 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-10-13 00:07:09,776 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-10-13 00:07:09,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-10-13 00:07:09,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-10-13 00:07:09,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:09,778 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-10-13 00:07:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-10-13 00:07:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-10-13 00:07:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-10-13 00:07:09,792 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-10-13 00:07:09,792 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-10-13 00:07:09,792 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:07:09,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-10-13 00:07:09,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-13 00:07:09,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:09,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:09,799 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:07:09,800 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:07:09,800 INFO L791 eck$LassoCheckResult]: Stem: 461#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); 462#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; 488#L101 assume !false; 464#L20 [2021-10-13 00:07:09,800 INFO L793 eck$LassoCheckResult]: Loop: 464#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 476#L26 assume !(8466 == main_~s__state~0); 477#L31 assume 8512 == main_~s__state~0; 480#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 474#L71 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 463#L101 assume !false; 464#L20 [2021-10-13 00:07:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:09,801 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-10-13 00:07:09,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:09,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511714872] [2021-10-13 00:07:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:09,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:09,817 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:09,842 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:09,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:09,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-10-13 00:07:09,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:09,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456791732] [2021-10-13 00:07:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:09,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:09,852 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:09,871 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-10-13 00:07:09,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:09,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917423926] [2021-10-13 00:07:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:09,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:09,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:09,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917423926] [2021-10-13 00:07:09,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917423926] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:09,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:09,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:09,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118346422] [2021-10-13 00:07:09,964 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:09,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:09,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:09,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:09,965 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:09,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:09,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:09,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:09,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-10-13 00:07:09,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:09,966 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:09,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:09,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:09,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:10,020 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:10,020 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:10,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:10,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:10,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 00:07:10,049 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:10,049 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Honda state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:10,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:10,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,089 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:10,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:10,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 00:07:10,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-10-13 00:07:10,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,165 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 00:07:10,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:10,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:10,201 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:10,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:10,226 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:10,226 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:10,226 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:10,227 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:10,227 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:10,227 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,227 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:10,227 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:10,227 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-10-13 00:07:10,227 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:10,227 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:10,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:10,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:10,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:10,288 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:10,288 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:10,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,290 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,297 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:10,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 00:07:10,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:10,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:10,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:10,306 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 00:07:10,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:10,308 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:07:10,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:10,325 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:10,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:10,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,362 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:10,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:10,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:10,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:10,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:10,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:10,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:10,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:10,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 00:07:10,401 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:10,405 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 00:07:10,406 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:07:10,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,408 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,412 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:10,412 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:10,412 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:10,413 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-10-13 00:07:10,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 00:07:10,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:10,443 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:10,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:10,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:10,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:10,553 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 00:07:10,553 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:10,636 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2021-10-13 00:07:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-13 00:07:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-10-13 00:07:10,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-13 00:07:10,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:10,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-10-13 00:07:10,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:10,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-10-13 00:07:10,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:10,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-10-13 00:07:10,646 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-10-13 00:07:10,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-10-13 00:07:10,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-10-13 00:07:10,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-13 00:07:10,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-10-13 00:07:10,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:10,649 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-10-13 00:07:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-10-13 00:07:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-10-13 00:07:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:10,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-10-13 00:07:10,689 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-10-13 00:07:10,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:10,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:10,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:10,690 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:10,712 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-10-13 00:07:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:10,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-10-13 00:07:10,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-10-13 00:07:10,716 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-10-13 00:07:10,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-13 00:07:10,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-13 00:07:10,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-10-13 00:07:10,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:10,717 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-10-13 00:07:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-10-13 00:07:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-13 00:07:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-10-13 00:07:10,725 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-10-13 00:07:10,725 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-10-13 00:07:10,725 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:07:10,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-10-13 00:07:10,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-10-13 00:07:10,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:10,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:10,728 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:10,728 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:07:10,728 INFO L791 eck$LassoCheckResult]: Stem: 943#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); 944#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; 945#L101 assume !false; 946#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 962#L26 assume 8466 == main_~s__state~0; 963#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 986#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 982#L101 assume !false; 981#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 960#L26 assume !(8466 == main_~s__state~0); 961#L31 [2021-10-13 00:07:10,728 INFO L793 eck$LassoCheckResult]: Loop: 961#L31 assume 8512 == main_~s__state~0; 964#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 955#L71 assume !(0 != main_~tmp___1~0);main_~s__state~0 := 8640; 957#L101 assume !false; 977#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 978#L26 assume !(8466 == main_~s__state~0); 961#L31 [2021-10-13 00:07:10,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:10,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-10-13 00:07:10,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:10,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543003889] [2021-10-13 00:07:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:10,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:10,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:10,743 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:10,755 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:10,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-10-13 00:07:10,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:10,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265585153] [2021-10-13 00:07:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:10,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:10,760 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:10,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:10,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-10-13 00:07:10,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:10,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393966062] [2021-10-13 00:07:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:10,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:10,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:10,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393966062] [2021-10-13 00:07:10,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393966062] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:10,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:10,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:10,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496038109] [2021-10-13 00:07:10,816 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:10,816 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:10,816 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:10,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:10,817 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:10,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:10,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:10,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-10-13 00:07:10,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:10,817 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:10,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:10,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:10,850 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:10,850 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:10,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,851 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 00:07:10,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:10,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:10,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:10,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:10,926 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:10,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:10,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:10,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 00:07:10,953 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:10,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-10-13 00:07:10,975 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:10,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:10,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:10,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:10,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:10,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:10,975 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:10,975 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:10,975 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-10-13 00:07:10,975 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:10,975 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:10,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:10,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:11,015 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:11,016 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:11,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:11,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:11,017 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:11,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 00:07:11,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:11,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:11,032 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:11,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:11,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:11,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:11,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:11,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:11,036 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:11,038 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:07:11,038 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:07:11,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:11,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:11,039 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:11,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 00:07:11,040 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:11,040 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:11,040 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:11,040 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2021-10-13 00:07:11,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-13 00:07:11,061 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:11,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:11,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:11,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:11,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:11,203 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 00:07:11,203 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,296 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2021-10-13 00:07:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-13 00:07:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-10-13 00:07:11,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-10-13 00:07:11,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:11,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-10-13 00:07:11,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:11,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-10-13 00:07:11,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:11,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-10-13 00:07:11,306 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-10-13 00:07:11,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-10-13 00:07:11,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-10-13 00:07:11,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-10-13 00:07:11,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-10-13 00:07:11,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:11,312 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-10-13 00:07:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-10-13 00:07:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-10-13 00:07:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-10-13 00:07:11,335 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-10-13 00:07:11,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:11,336 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:11,370 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-10-13 00:07:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:11,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-10-13 00:07:11,373 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-10-13 00:07:11,375 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-10-13 00:07:11,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-10-13 00:07:11,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-13 00:07:11,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-10-13 00:07:11,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:11,376 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-10-13 00:07:11,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-10-13 00:07:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-10-13 00:07:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-10-13 00:07:11,385 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-10-13 00:07:11,385 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-10-13 00:07:11,385 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 00:07:11,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-10-13 00:07:11,386 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-10-13 00:07:11,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:11,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:11,387 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,387 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,388 INFO L791 eck$LassoCheckResult]: Stem: 1548#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); 1549#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#L101 assume !false; 1674#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1672#L26 assume 8466 == main_~s__state~0; 1560#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1561#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1554#L101 [2021-10-13 00:07:11,388 INFO L793 eck$LassoCheckResult]: Loop: 1554#L101 assume !false; 1555#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1573#L26 assume !(8466 == main_~s__state~0); 1574#L31 assume !(8512 == main_~s__state~0); 1550#L47 assume !(8640 == main_~s__state~0); 1551#L51 assume 8656 == main_~s__state~0; 1562#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1581#L90-1 assume 4 == main_~blastFlag~0;main_~blastFlag~0 := 5; 1583#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1566#L101 assume !false; 1680#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1678#L26 assume 8466 == main_~s__state~0; 1614#L27 assume !(0 == main_~blastFlag~0); 1588#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1554#L101 [2021-10-13 00:07:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-10-13 00:07:11,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262192410] [2021-10-13 00:07:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,397 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,408 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-10-13 00:07:11,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685479304] [2021-10-13 00:07:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:11,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:11,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685479304] [2021-10-13 00:07:11,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685479304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:11,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:11,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:11,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547410723] [2021-10-13 00:07:11,426 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:11,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:11,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:11,428 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:11,461 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-10-13 00:07:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:11,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-10-13 00:07:11,464 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-10-13 00:07:11,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-10-13 00:07:11,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-10-13 00:07:11,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-10-13 00:07:11,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-10-13 00:07:11,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:11,468 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-10-13 00:07:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-10-13 00:07:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-10-13 00:07:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-10-13 00:07:11,481 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-10-13 00:07:11,482 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-10-13 00:07:11,482 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 00:07:11,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-10-13 00:07:11,483 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-10-13 00:07:11,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:11,484 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:11,484 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,484 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,485 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1875#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1909#L101 assume !false; 1975#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1976#L26 assume 8466 == main_~s__state~0; 1970#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1967#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L101 [2021-10-13 00:07:11,485 INFO L793 eck$LassoCheckResult]: Loop: 1940#L101 assume !false; 1987#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1985#L26 assume !(8466 == main_~s__state~0); 1983#L31 assume !(8512 == main_~s__state~0); 1980#L47 assume !(8640 == main_~s__state~0); 1880#L51 assume 8656 == main_~s__state~0; 1881#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1900#L90-1 assume !(4 == main_~blastFlag~0); 1901#L97 assume !(5 == main_~blastFlag~0); 1907#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1876#L101 assume !false; 1877#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1999#L26 assume 8466 == main_~s__state~0; 1997#L27 assume !(0 == main_~blastFlag~0); 1994#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L101 [2021-10-13 00:07:11,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-10-13 00:07:11,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121598282] [2021-10-13 00:07:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,513 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,522 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:11,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,523 INFO L82 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-10-13 00:07:11,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135344107] [2021-10-13 00:07:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:11,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:11,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135344107] [2021-10-13 00:07:11,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135344107] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:11,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:11,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:11,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758328609] [2021-10-13 00:07:11,578 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:11,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:11,579 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:11,600 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-10-13 00:07:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:11,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-10-13 00:07:11,603 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-10-13 00:07:11,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-10-13 00:07:11,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-10-13 00:07:11,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-13 00:07:11,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-10-13 00:07:11,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:11,605 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-10-13 00:07:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-10-13 00:07:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-10-13 00:07:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-10-13 00:07:11,609 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-10-13 00:07:11,610 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-10-13 00:07:11,610 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 00:07:11,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-10-13 00:07:11,611 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-10-13 00:07:11,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:11,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:11,614 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,614 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,614 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; 2237#L101 assume !false; 2286#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2287#L26 assume 8466 == main_~s__state~0; 2274#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2269#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2250#L101 [2021-10-13 00:07:11,615 INFO L793 eck$LassoCheckResult]: Loop: 2250#L101 assume !false; 2309#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2308#L26 assume !(8466 == main_~s__state~0); 2307#L31 assume !(8512 == main_~s__state~0); 2282#L47 assume !(8640 == main_~s__state~0); 2281#L51 assume 8656 == main_~s__state~0; 2280#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 2240#L90-1 assume !(4 == main_~blastFlag~0); 2241#L97 assume !(5 == main_~blastFlag~0); 2244#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2245#L101 assume !false; 2252#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2231#L26 assume !(8466 == main_~s__state~0); 2232#L31 assume !(8512 == main_~s__state~0); 2234#L47 assume 8640 == main_~s__state~0; 2255#L48 assume !(3 == main_~blastFlag~0); 2249#L79-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2250#L101 [2021-10-13 00:07:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-10-13 00:07:11,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642471935] [2021-10-13 00:07:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,624 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,633 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,634 INFO L82 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-10-13 00:07:11,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940510392] [2021-10-13 00:07:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:11,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:11,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940510392] [2021-10-13 00:07:11,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940510392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:11,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:11,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:11,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104885885] [2021-10-13 00:07:11,652 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:11,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:11,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:11,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:11,653 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:11,669 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-10-13 00:07:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:11,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-10-13 00:07:11,671 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-10-13 00:07:11,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-10-13 00:07:11,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-10-13 00:07:11,673 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-10-13 00:07:11,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-10-13 00:07:11,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:11,673 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-10-13 00:07:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-10-13 00:07:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-13 00:07:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-10-13 00:07:11,677 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-10-13 00:07:11,677 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-10-13 00:07:11,677 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-13 00:07:11,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-10-13 00:07:11,689 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-10-13 00:07:11,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:11,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:11,690 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,690 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,691 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2443#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2446#L101 assume !false; 2447#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2460#L26 assume 8466 == main_~s__state~0; 2461#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2501#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2494#L101 [2021-10-13 00:07:11,691 INFO L793 eck$LassoCheckResult]: Loop: 2494#L101 assume !false; 2539#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2538#L26 assume !(8466 == main_~s__state~0); 2537#L31 assume !(8512 == main_~s__state~0); 2535#L47 assume !(8640 == main_~s__state~0); 2532#L51 assume 8656 == main_~s__state~0; 2509#L52 assume !(2 == main_~blastFlag~0); 2466#L90-1 assume !(4 == main_~blastFlag~0); 2467#L97 assume !(5 == main_~blastFlag~0); 2544#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2526#L101 assume !false; 2543#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2542#L26 assume !(8466 == main_~s__state~0); 2540#L31 assume !(8512 == main_~s__state~0); 2515#L47 assume 8640 == main_~s__state~0; 2534#L48 assume !(3 == main_~blastFlag~0); 2541#L79-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2494#L101 [2021-10-13 00:07:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-10-13 00:07:11,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680934545] [2021-10-13 00:07:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,698 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,705 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-10-13 00:07:11,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873579492] [2021-10-13 00:07:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:11,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:11,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873579492] [2021-10-13 00:07:11,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873579492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:11,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:11,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:07:11,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291199958] [2021-10-13 00:07:11,719 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:11,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:11,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:11,720 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:11,727 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-10-13 00:07:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:11,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-10-13 00:07:11,729 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-10-13 00:07:11,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-10-13 00:07:11,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-10-13 00:07:11,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-10-13 00:07:11,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-10-13 00:07:11,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:11,731 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-10-13 00:07:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-10-13 00:07:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-10-13 00:07:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-10-13 00:07:11,734 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-10-13 00:07:11,735 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-10-13 00:07:11,735 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-13 00:07:11,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-10-13 00:07:11,736 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-10-13 00:07:11,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:11,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:11,736 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,736 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:11,737 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; 2729#L101 assume !false; 2782#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2783#L26 assume 8466 == main_~s__state~0; 2777#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2774#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2710#L101 [2021-10-13 00:07:11,737 INFO L793 eck$LassoCheckResult]: Loop: 2710#L101 assume !false; 2711#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2723#L26 assume !(8466 == main_~s__state~0); 2724#L31 assume !(8512 == main_~s__state~0); 2726#L47 assume !(8640 == main_~s__state~0); 2746#L51 assume 8656 == main_~s__state~0; 2810#L52 assume !(2 == main_~blastFlag~0); 2731#L90-1 assume !(4 == main_~blastFlag~0); 2732#L97 assume !(5 == main_~blastFlag~0); 2735#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2710#L101 [2021-10-13 00:07:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-10-13 00:07:11,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693936430] [2021-10-13 00:07:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,744 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-10-13 00:07:11,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268693677] [2021-10-13 00:07:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,760 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:11,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-10-13 00:07:11,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:11,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822608285] [2021-10-13 00:07:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:11,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:11,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:11,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:11,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822608285] [2021-10-13 00:07:11,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822608285] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:11,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:11,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:07:11,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454004208] [2021-10-13 00:07:11,823 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:11,823 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:11,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:11,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:11,823 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:11,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:11,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:11,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:11,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-10-13 00:07:11,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:11,824 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:11,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:11,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:11,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:11,907 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:11,907 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:11,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:11,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:11,908 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:11,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 00:07:11,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:11,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:11,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:11,925 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=4} Honda state: {ULTIMATE.start_main_~s__hit~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:11,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:11,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:11,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:11,945 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:11,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 00:07:11,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:11,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:11,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:11,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:11,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:11,983 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:11,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 00:07:11,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:11,985 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:11,994 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:12,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-13 00:07:12,013 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:12,013 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:12,013 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:12,013 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:12,013 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:12,013 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:12,013 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:12,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:12,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-10-13 00:07:12,014 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:12,014 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:12,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:12,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:12,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:12,099 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:12,099 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:12,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:12,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:12,100 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:12,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:12,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:12,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:12,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:12,119 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 00:07:12,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:12,120 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 00:07:12,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:12,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 00:07:12,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:12,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:12,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:12,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:12,161 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:12,199 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:07:12,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 00:07:12,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:12,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:12,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:12,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:12,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:12,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:12,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:12,227 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:12,229 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 00:07:12,230 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:07:12,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:12,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:12,233 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:12,234 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:12,234 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:12,235 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:12,235 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-10-13 00:07:12,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 00:07:12,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:12,254 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:12,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:12,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:12,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:12,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:12,371 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 00:07:12,371 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:12,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2021-10-13 00:07:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 00:07:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-10-13 00:07:12,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-10-13 00:07:12,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:12,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-10-13 00:07:12,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:12,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-10-13 00:07:12,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:12,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-10-13 00:07:12,426 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-10-13 00:07:12,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-10-13 00:07:12,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-13 00:07:12,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-13 00:07:12,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-10-13 00:07:12,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:12,427 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-10-13 00:07:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-10-13 00:07:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-13 00:07:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:12,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-10-13 00:07:12,430 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-10-13 00:07:12,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:12,431 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:12,443 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-10-13 00:07:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:12,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-10-13 00:07:12,444 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-13 00:07:12,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-10-13 00:07:12,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-10-13 00:07:12,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-13 00:07:12,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-10-13 00:07:12,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:12,446 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-13 00:07:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-10-13 00:07:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-13 00:07:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-10-13 00:07:12,448 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-13 00:07:12,448 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-13 00:07:12,448 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-13 00:07:12,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-10-13 00:07:12,449 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-13 00:07:12,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:12,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:12,449 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:12,450 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:12,450 INFO L791 eck$LassoCheckResult]: Stem: 3242#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); 3243#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; 3266#L101 assume !false; 3289#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3288#L26 assume 8466 == main_~s__state~0; 3287#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 3285#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3282#L101 assume !false; 3281#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3279#L26 assume !(8466 == main_~s__state~0); 3277#L31 assume 8512 == main_~s__state~0; 3267#L32 [2021-10-13 00:07:12,450 INFO L793 eck$LassoCheckResult]: Loop: 3267#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 3253#L71 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 3254#L101 assume !false; 3297#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3295#L26 assume 8466 == main_~s__state~0; 3248#L27 assume !(0 == main_~blastFlag~0); 3249#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3270#L101 assume !false; 3286#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3284#L26 assume !(8466 == main_~s__state~0); 3276#L31 assume 8512 == main_~s__state~0; 3267#L32 [2021-10-13 00:07:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:12,450 INFO L82 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-10-13 00:07:12,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:12,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709991114] [2021-10-13 00:07:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:12,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:12,464 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:12,485 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-10-13 00:07:12,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:12,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109539591] [2021-10-13 00:07:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:12,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:12,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:12,503 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:12,504 INFO L82 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-10-13 00:07:12,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:12,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124869445] [2021-10-13 00:07:12,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:12,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:12,510 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:12,534 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:12,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:12,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:07:12 BoogieIcfgContainer [2021-10-13 00:07:12,948 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:07:12,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:07:12,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:07:12,949 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:07:12,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:07" (3/4) ... [2021-10-13 00:07:12,952 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-13 00:07:12,984 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:07:12,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:07:12,986 INFO L168 Benchmark]: Toolchain (without parser) took 6813.30 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 66.9 MB in the beginning and 85.9 MB in the end (delta: -18.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:12,986 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 83.1 MB in the beginning and 83.0 MB in the end (delta: 142.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:07:12,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.65 ms. Allocated memory is still 104.9 MB. Free memory was 66.7 MB in the beginning and 72.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:12,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 104.9 MB. Free memory was 72.7 MB in the beginning and 71.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:12,987 INFO L168 Benchmark]: Boogie Preprocessor took 26.45 ms. Allocated memory is still 104.9 MB. Free memory was 71.3 MB in the beginning and 70.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:07:12,988 INFO L168 Benchmark]: RCFGBuilder took 470.24 ms. Allocated memory is still 104.9 MB. Free memory was 70.1 MB in the beginning and 59.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:12,988 INFO L168 Benchmark]: BuchiAutomizer took 5904.13 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 59.9 MB in the beginning and 88.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:12,989 INFO L168 Benchmark]: Witness Printer took 35.96 ms. Allocated memory is still 130.0 MB. Free memory was 88.0 MB in the beginning and 85.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:12,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 83.1 MB in the beginning and 83.0 MB in the end (delta: 142.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.65 ms. Allocated memory is still 104.9 MB. Free memory was 66.7 MB in the beginning and 72.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 104.9 MB. Free memory was 72.7 MB in the beginning and 71.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.45 ms. Allocated memory is still 104.9 MB. Free memory was 71.3 MB in the beginning and 70.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 470.24 ms. Allocated memory is still 104.9 MB. Free memory was 70.1 MB in the beginning and 59.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5904.13 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 59.9 MB in the beginning and 88.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. * Witness Printer took 35.96 ms. Allocated memory is still 130.0 MB. Free memory was 88.0 MB in the beginning and 85.9 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 4.1s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 141.2ms 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, 242.3ms 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: 41ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 31]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=3, NULL=0, \result=0, tmp___1=14, NULL=4, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1751f1ae=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2254f0c1=14, NULL=0, s__hit=0, NULL=5, blastFlag=2, s__state=8512} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 31]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] int s__state ; [L12] int s__hit = __VERIFIER_nondet_int() ; [L13] int blastFlag ; [L14] int tmp___1; [L16] s__state = 8466 [L17] blastFlag = 0 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND TRUE s__state == 8466 [L59] COND TRUE blastFlag == 0 [L60] blastFlag = 2 [L62] COND FALSE !(\read(s__hit)) [L65] s__state = 8512 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND FALSE !(s__state == 8466) [L31] COND TRUE s__state == 8512 Loop: [L70] tmp___1 = __VERIFIER_nondet_int() [L71] COND TRUE \read(tmp___1) [L72] s__state = 8466 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND TRUE s__state == 8466 [L59] COND FALSE !(blastFlag == 0) [L62] COND FALSE !(\read(s__hit)) [L65] s__state = 8512 [L19] COND TRUE 1 [L20] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L26] COND FALSE !(s__state == 8466) [L31] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:07:13,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d0505e-161d-4844-9878-ff1dab50597f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...