./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/id_build.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/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_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/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_453b648b-3fa8-491f-bfa8-dd17b9605e5b/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 8e693e301fe03afa61a3f7e2110361a5e60df7f9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:07:44,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:07:44,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:07:44,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:07:44,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:07:44,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:07:44,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:07:44,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:07:44,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:07:44,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:07:44,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:07:44,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:07:44,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:07:44,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:07:44,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:07:44,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:07:44,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:07:44,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:07:44,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:07:44,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:07:44,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:07:44,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:07:44,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:07:44,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:07:44,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:07:44,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:07:44,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:07:44,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:07:44,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:07:44,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:07:44,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:07:44,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:07:44,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:07:44,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:07:44,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:07:44,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:07:44,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:07:44,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:07:44,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:07:44,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:07:44,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:07:44,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 00:07:44,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:07:44,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:07:44,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:07:44,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:07:44,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:07:44,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:07:44,281 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:07:44,282 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:07:44,282 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:07:44,283 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:07:44,283 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:07:44,283 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:07:44,284 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:07:44,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:07:44,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:07:44,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:07:44,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:07:44,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:07:44,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:07:44,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:07:44,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:07:44,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:07:44,287 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:07:44,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:07:44,287 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:07:44,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:07:44,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:07:44,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:07:44,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:07:44,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:07:44,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:07:44,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:07:44,293 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:07:44,294 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_453b648b-3fa8-491f-bfa8-dd17b9605e5b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e693e301fe03afa61a3f7e2110361a5e60df7f9 [2021-10-13 00:07:44,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:07:44,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:07:44,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:07:44,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:07:44,645 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:07:44,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loop-invgen/id_build.i [2021-10-13 00:07:44,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/data/87147ff00/5f68656871764ca8bde80269b8a438ab/FLAGa9d8aa2b5 [2021-10-13 00:07:45,292 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:07:45,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/sv-benchmarks/c/loop-invgen/id_build.i [2021-10-13 00:07:45,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/data/87147ff00/5f68656871764ca8bde80269b8a438ab/FLAGa9d8aa2b5 [2021-10-13 00:07:45,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/data/87147ff00/5f68656871764ca8bde80269b8a438ab [2021-10-13 00:07:45,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:07:45,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:07:45,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:07:45,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:07:45,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:07:45,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:45,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc43f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45, skipping insertion in model container [2021-10-13 00:07:45,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:45,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:07:45,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:07:45,904 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_453b648b-3fa8-491f-bfa8-dd17b9605e5b/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-13 00:07:45,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:07:45,925 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:07:45,938 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_453b648b-3fa8-491f-bfa8-dd17b9605e5b/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-13 00:07:45,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:07:45,958 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:07:45,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45 WrapperNode [2021-10-13 00:07:45,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:07:45,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:07:45,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:07:45,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:07:45,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:45,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:07:46,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:07:46,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:07:46,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:07:46,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:07:46,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:07:46,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:07:46,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:07:46,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (1/1) ... [2021-10-13 00:07:46,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:46,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:46,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:07:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:07:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:07:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:07:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:07:46,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:07:46,433 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 00:07:46,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:46 BoogieIcfgContainer [2021-10-13 00:07:46,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:07:46,436 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:07:46,436 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:07:46,442 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:07:46,444 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:07:46,446 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:07:45" (1/3) ... [2021-10-13 00:07:46,447 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d07e327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:07:46, skipping insertion in model container [2021-10-13 00:07:46,447 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:07:46,447 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:45" (2/3) ... [2021-10-13 00:07:46,448 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d07e327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:07:46, skipping insertion in model container [2021-10-13 00:07:46,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:07:46,448 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:46" (3/3) ... [2021-10-13 00:07:46,463 INFO L389 chiAutomizerObserver]: Analyzing ICFG id_build.i [2021-10-13 00:07:46,525 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:07:46,525 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:07:46,525 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:07:46,525 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:07:46,526 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:07:46,526 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:07:46,526 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:07:46,526 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:07:46,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:46,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-13 00:07:46,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:46,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:46,564 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:46,564 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:07:46,564 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:07:46,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:46,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-13 00:07:46,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:46,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:46,567 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:46,567 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:07:46,574 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 15#L27-3true [2021-10-13 00:07:46,574 INFO L793 eck$LassoCheckResult]: Loop: 15#L27-3true assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 8#L28-2true assume !(main_~j~0 < 8); 11#L27-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 15#L27-3true [2021-10-13 00:07:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:46,590 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-13 00:07:46,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:46,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577841084] [2021-10-13 00:07:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:46,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:46,697 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:46,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:46,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:46,747 INFO L82 PathProgramCache]: Analyzing trace with hash 39940, now seen corresponding path program 1 times [2021-10-13 00:07:46,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:46,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987163997] [2021-10-13 00:07:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:46,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:46,829 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 00:07:46,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:46,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987163997] [2021-10-13 00:07:46,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987163997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:07:46,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:07:46,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:07:46,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404134985] [2021-10-13 00:07:46,838 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:46,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:07:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:07:46,859 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:46,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:46,898 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-13 00:07:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:07:46,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 23 transitions. [2021-10-13 00:07:46,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-13 00:07:46,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 15 transitions. [2021-10-13 00:07:46,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-13 00:07:46,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-13 00:07:46,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2021-10-13 00:07:46,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:46,915 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-13 00:07:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2021-10-13 00:07:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2021-10-13 00:07:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-13 00:07:46,971 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 00:07:46,971 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 00:07:46,972 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:07:46,972 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-13 00:07:46,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-13 00:07:46,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:46,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:46,976 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:46,978 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:07:46,978 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 49#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 53#L27-3 [2021-10-13 00:07:46,979 INFO L793 eck$LassoCheckResult]: Loop: 53#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 54#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 46#L18 assume !(0 == __VERIFIER_assert_~cond); 47#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 50#L18-3 assume !(0 == __VERIFIER_assert_~cond); 51#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 52#L28-2 assume !(main_~j~0 < 8); 55#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 53#L27-3 [2021-10-13 00:07:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:46,980 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-13 00:07:46,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:46,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270653281] [2021-10-13 00:07:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:46,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:47,017 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:47,037 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:47,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2021355157, now seen corresponding path program 1 times [2021-10-13 00:07:47,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:47,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510145423] [2021-10-13 00:07:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:47,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:47,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:47,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510145423] [2021-10-13 00:07:47,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510145423] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:47,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012869587] [2021-10-13 00:07:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:47,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:47,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:47,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:47,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:07:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:47,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:07:47,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:47,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012869587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:47,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:47,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-13 00:07:47,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865186730] [2021-10-13 00:07:47,216 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:47,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:47,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:07:47,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:07:47,218 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:47,240 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-13 00:07:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:07:47,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2021-10-13 00:07:47,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-13 00:07:47,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2021-10-13 00:07:47,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-13 00:07:47,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-13 00:07:47,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2021-10-13 00:07:47,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:47,245 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-13 00:07:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2021-10-13 00:07:47,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-13 00:07:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-13 00:07:47,249 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-13 00:07:47,249 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-13 00:07:47,249 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:07:47,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-10-13 00:07:47,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-13 00:07:47,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:47,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:47,252 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:47,252 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 1, 1, 1] [2021-10-13 00:07:47,252 INFO L791 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 106#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 111#L27-3 [2021-10-13 00:07:47,253 INFO L793 eck$LassoCheckResult]: Loop: 111#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 112#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 117#L18 assume !(0 == __VERIFIER_assert_~cond); 116#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 115#L18-3 assume !(0 == __VERIFIER_assert_~cond); 107#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 108#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 103#L18 assume !(0 == __VERIFIER_assert_~cond); 104#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 109#L18-3 assume !(0 == __VERIFIER_assert_~cond); 110#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 114#L28-2 assume !(main_~j~0 < 8); 113#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 111#L27-3 [2021-10-13 00:07:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:47,253 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-13 00:07:47,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:47,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437533071] [2021-10-13 00:07:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:47,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:47,268 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:47,282 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:47,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:47,284 INFO L82 PathProgramCache]: Analyzing trace with hash -51059612, now seen corresponding path program 2 times [2021-10-13 00:07:47,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:47,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246714119] [2021-10-13 00:07:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:47,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:47,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:47,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246714119] [2021-10-13 00:07:47,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246714119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:47,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161400500] [2021-10-13 00:07:47,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:07:47,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:47,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:47,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:07:47,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:07:47,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:07:47,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:47,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:47,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161400500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:47,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:47,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 00:07:47,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054535920] [2021-10-13 00:07:47,544 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:47,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:07:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:07:47,547 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:47,583 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-13 00:07:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:07:47,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 25 transitions. [2021-10-13 00:07:47,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2021-10-13 00:07:47,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 25 transitions. [2021-10-13 00:07:47,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-13 00:07:47,589 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-13 00:07:47,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2021-10-13 00:07:47,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:47,594 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-13 00:07:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2021-10-13 00:07:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-10-13 00:07:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.05) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-13 00:07:47,597 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-13 00:07:47,598 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-13 00:07:47,598 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:07:47,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 21 transitions. [2021-10-13 00:07:47,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-13 00:07:47,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:47,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:47,600 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:47,600 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 3, 3, 1, 1, 1] [2021-10-13 00:07:47,600 INFO L791 eck$LassoCheckResult]: Stem: 188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 189#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 194#L27-3 [2021-10-13 00:07:47,600 INFO L793 eck$LassoCheckResult]: Loop: 194#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 195#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 205#L18 assume !(0 == __VERIFIER_assert_~cond); 204#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 203#L18-3 assume !(0 == __VERIFIER_assert_~cond); 191#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 192#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 186#L18 assume !(0 == __VERIFIER_assert_~cond); 187#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 190#L18-3 assume !(0 == __VERIFIER_assert_~cond); 193#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 202#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 198#L18 assume !(0 == __VERIFIER_assert_~cond); 201#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 200#L18-3 assume !(0 == __VERIFIER_assert_~cond); 199#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 197#L28-2 assume !(main_~j~0 < 8); 196#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 194#L27-3 [2021-10-13 00:07:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:47,601 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-13 00:07:47,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:47,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822505109] [2021-10-13 00:07:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:47,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:47,613 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:47,627 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:47,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:47,628 INFO L82 PathProgramCache]: Analyzing trace with hash 63866123, now seen corresponding path program 3 times [2021-10-13 00:07:47,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:47,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445856193] [2021-10-13 00:07:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:47,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:47,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:47,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445856193] [2021-10-13 00:07:47,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445856193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:47,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891356440] [2021-10-13 00:07:47,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:07:47,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:47,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:47,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:47,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:07:47,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 00:07:47,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:07:47,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:07:47,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:47,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891356440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:47,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:47,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 00:07:47,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259356673] [2021-10-13 00:07:47,955 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:47,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:07:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:07:47,956 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:47,998 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-13 00:07:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:07:47,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 30 transitions. [2021-10-13 00:07:48,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-10-13 00:07:48,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 30 transitions. [2021-10-13 00:07:48,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-13 00:07:48,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-13 00:07:48,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 30 transitions. [2021-10-13 00:07:48,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:48,005 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-13 00:07:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 30 transitions. [2021-10-13 00:07:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-10-13 00:07:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-13 00:07:48,014 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-13 00:07:48,015 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-13 00:07:48,015 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 00:07:48,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2021-10-13 00:07:48,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-13 00:07:48,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:48,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:48,020 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:48,020 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 4, 4, 1, 1, 1] [2021-10-13 00:07:48,021 INFO L791 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 298#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 303#L27-3 [2021-10-13 00:07:48,021 INFO L793 eck$LassoCheckResult]: Loop: 303#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 304#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 319#L18 assume !(0 == __VERIFIER_assert_~cond); 318#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 317#L18-3 assume !(0 == __VERIFIER_assert_~cond); 300#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 301#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 295#L18 assume !(0 == __VERIFIER_assert_~cond); 296#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 299#L18-3 assume !(0 == __VERIFIER_assert_~cond); 302#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 316#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 315#L18 assume !(0 == __VERIFIER_assert_~cond); 314#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 313#L18-3 assume !(0 == __VERIFIER_assert_~cond); 312#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 311#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 307#L18 assume !(0 == __VERIFIER_assert_~cond); 310#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 309#L18-3 assume !(0 == __VERIFIER_assert_~cond); 308#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 306#L28-2 assume !(main_~j~0 < 8); 305#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 303#L27-3 [2021-10-13 00:07:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:48,021 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-13 00:07:48,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:48,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150622692] [2021-10-13 00:07:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:48,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:48,048 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:48,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2131610428, now seen corresponding path program 4 times [2021-10-13 00:07:48,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:48,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959455626] [2021-10-13 00:07:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:48,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:48,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:48,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959455626] [2021-10-13 00:07:48,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959455626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:48,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982838411] [2021-10-13 00:07:48,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:07:48,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:48,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:48,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:48,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:07:48,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:07:48,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:07:48,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:07:48,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:48,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982838411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:48,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:48,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 00:07:48,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508703929] [2021-10-13 00:07:48,416 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:48,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:07:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:07:48,419 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. cyclomatic complexity: 2 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:48,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:48,457 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-13 00:07:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:07:48,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 35 transitions. [2021-10-13 00:07:48,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-13 00:07:48,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 35 transitions. [2021-10-13 00:07:48,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-13 00:07:48,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-13 00:07:48,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 35 transitions. [2021-10-13 00:07:48,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:48,466 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-10-13 00:07:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 35 transitions. [2021-10-13 00:07:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-13 00:07:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-13 00:07:48,473 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-13 00:07:48,473 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-13 00:07:48,473 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 00:07:48,473 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 31 transitions. [2021-10-13 00:07:48,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-13 00:07:48,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:48,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:48,480 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:48,480 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 5, 5, 5, 1, 1, 1] [2021-10-13 00:07:48,481 INFO L791 eck$LassoCheckResult]: Stem: 432#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 433#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 438#L27-3 [2021-10-13 00:07:48,481 INFO L793 eck$LassoCheckResult]: Loop: 438#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 439#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 459#L18 assume !(0 == __VERIFIER_assert_~cond); 458#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 457#L18-3 assume !(0 == __VERIFIER_assert_~cond); 435#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 436#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 430#L18 assume !(0 == __VERIFIER_assert_~cond); 431#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 434#L18-3 assume !(0 == __VERIFIER_assert_~cond); 437#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 456#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 455#L18 assume !(0 == __VERIFIER_assert_~cond); 454#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 453#L18-3 assume !(0 == __VERIFIER_assert_~cond); 452#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 451#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 450#L18 assume !(0 == __VERIFIER_assert_~cond); 449#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 448#L18-3 assume !(0 == __VERIFIER_assert_~cond); 447#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 446#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 442#L18 assume !(0 == __VERIFIER_assert_~cond); 445#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 444#L18-3 assume !(0 == __VERIFIER_assert_~cond); 443#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 441#L28-2 assume !(main_~j~0 < 8); 440#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 438#L27-3 [2021-10-13 00:07:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:48,482 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-13 00:07:48,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:48,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105117144] [2021-10-13 00:07:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:48,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:48,506 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:48,520 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:48,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1653313365, now seen corresponding path program 5 times [2021-10-13 00:07:48,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:48,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342185905] [2021-10-13 00:07:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:48,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:48,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:48,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342185905] [2021-10-13 00:07:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342185905] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:48,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442258914] [2021-10-13 00:07:48,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:07:48,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:48,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:48,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:48,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:07:48,766 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 00:07:48,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:07:48,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:07:48,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:48,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442258914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:48,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:48,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 00:07:48,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865593113] [2021-10-13 00:07:48,918 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:48,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:07:48,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:07:48,919 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:48,952 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-13 00:07:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:07:48,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 40 transitions. [2021-10-13 00:07:48,953 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-13 00:07:48,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 40 transitions. [2021-10-13 00:07:48,954 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-13 00:07:48,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-13 00:07:48,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 40 transitions. [2021-10-13 00:07:48,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:48,955 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-13 00:07:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 40 transitions. [2021-10-13 00:07:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-13 00:07:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-13 00:07:48,958 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-13 00:07:48,958 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-13 00:07:48,958 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 00:07:48,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 36 transitions. [2021-10-13 00:07:48,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-13 00:07:48,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:48,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:48,960 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:48,960 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 6, 6, 6, 1, 1, 1] [2021-10-13 00:07:48,960 INFO L791 eck$LassoCheckResult]: Stem: 593#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 594#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 599#L27-3 [2021-10-13 00:07:48,961 INFO L793 eck$LassoCheckResult]: Loop: 599#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 600#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 625#L18 assume !(0 == __VERIFIER_assert_~cond); 624#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 623#L18-3 assume !(0 == __VERIFIER_assert_~cond); 596#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 597#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 591#L18 assume !(0 == __VERIFIER_assert_~cond); 592#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 595#L18-3 assume !(0 == __VERIFIER_assert_~cond); 598#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 622#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 621#L18 assume !(0 == __VERIFIER_assert_~cond); 620#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 619#L18-3 assume !(0 == __VERIFIER_assert_~cond); 618#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 617#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 616#L18 assume !(0 == __VERIFIER_assert_~cond); 615#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 614#L18-3 assume !(0 == __VERIFIER_assert_~cond); 613#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 612#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 611#L18 assume !(0 == __VERIFIER_assert_~cond); 610#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 609#L18-3 assume !(0 == __VERIFIER_assert_~cond); 608#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 607#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 603#L18 assume !(0 == __VERIFIER_assert_~cond); 606#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 605#L18-3 assume !(0 == __VERIFIER_assert_~cond); 604#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 602#L28-2 assume !(main_~j~0 < 8); 601#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 599#L27-3 [2021-10-13 00:07:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:48,961 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-13 00:07:48,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:48,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028585102] [2021-10-13 00:07:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:48,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:48,968 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:48,975 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:48,975 INFO L82 PathProgramCache]: Analyzing trace with hash 978226468, now seen corresponding path program 6 times [2021-10-13 00:07:48,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:48,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927791141] [2021-10-13 00:07:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:48,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:49,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:49,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927791141] [2021-10-13 00:07:49,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927791141] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:49,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298903134] [2021-10-13 00:07:49,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:07:49,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:49,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:49,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:49,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:07:49,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 00:07:49,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:07:49,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:07:49,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:49,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298903134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:49,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:49,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-13 00:07:49,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501664408] [2021-10-13 00:07:49,351 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:49,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:07:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:07:49,352 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. cyclomatic complexity: 2 Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:49,391 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-13 00:07:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:07:49,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 45 transitions. [2021-10-13 00:07:49,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-10-13 00:07:49,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 45 transitions. [2021-10-13 00:07:49,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-13 00:07:49,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-13 00:07:49,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 45 transitions. [2021-10-13 00:07:49,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:49,398 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-13 00:07:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 45 transitions. [2021-10-13 00:07:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-13 00:07:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.025) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-13 00:07:49,407 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-13 00:07:49,407 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-13 00:07:49,407 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-13 00:07:49,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 41 transitions. [2021-10-13 00:07:49,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-10-13 00:07:49,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:49,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:49,411 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:49,411 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 7, 7, 7, 7, 1, 1, 1] [2021-10-13 00:07:49,411 INFO L791 eck$LassoCheckResult]: Stem: 780#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 781#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 786#L27-3 [2021-10-13 00:07:49,411 INFO L793 eck$LassoCheckResult]: Loop: 786#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 787#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 817#L18 assume !(0 == __VERIFIER_assert_~cond); 816#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 815#L18-3 assume !(0 == __VERIFIER_assert_~cond); 783#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 784#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 778#L18 assume !(0 == __VERIFIER_assert_~cond); 779#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 782#L18-3 assume !(0 == __VERIFIER_assert_~cond); 785#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 814#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 813#L18 assume !(0 == __VERIFIER_assert_~cond); 812#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 811#L18-3 assume !(0 == __VERIFIER_assert_~cond); 810#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 809#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 808#L18 assume !(0 == __VERIFIER_assert_~cond); 807#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 806#L18-3 assume !(0 == __VERIFIER_assert_~cond); 805#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 804#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 803#L18 assume !(0 == __VERIFIER_assert_~cond); 802#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 801#L18-3 assume !(0 == __VERIFIER_assert_~cond); 800#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 799#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 798#L18 assume !(0 == __VERIFIER_assert_~cond); 797#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 796#L18-3 assume !(0 == __VERIFIER_assert_~cond); 795#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 794#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 790#L18 assume !(0 == __VERIFIER_assert_~cond); 793#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 792#L18-3 assume !(0 == __VERIFIER_assert_~cond); 791#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 789#L28-2 assume !(main_~j~0 < 8); 788#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 786#L27-3 [2021-10-13 00:07:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-13 00:07:49,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:49,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183872407] [2021-10-13 00:07:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:49,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:49,428 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:49,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:49,436 INFO L82 PathProgramCache]: Analyzing trace with hash 736121931, now seen corresponding path program 7 times [2021-10-13 00:07:49,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:49,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630871895] [2021-10-13 00:07:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:49,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:49,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:07:49,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630871895] [2021-10-13 00:07:49,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630871895] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:49,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50027164] [2021-10-13 00:07:49,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:07:49,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:07:49,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:49,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:07:49,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:07:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:49,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:07:49,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:07:49,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50027164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:07:49,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:07:49,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 00:07:49,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968280894] [2021-10-13 00:07:49,868 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:07:49,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:07:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:07:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:07:49,890 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:07:49,934 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-10-13 00:07:49,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:07:49,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 46 transitions. [2021-10-13 00:07:49,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-13 00:07:49,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 46 transitions. [2021-10-13 00:07:49,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-13 00:07:49,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-13 00:07:49,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 46 transitions. [2021-10-13 00:07:49,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:49,937 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-13 00:07:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 46 transitions. [2021-10-13 00:07:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-13 00:07:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-13 00:07:49,941 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-13 00:07:49,941 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-13 00:07:49,941 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-13 00:07:49,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 46 transitions. [2021-10-13 00:07:49,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-13 00:07:49,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:49,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:49,943 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:07:49,943 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 8, 8, 8, 8, 1, 1, 1] [2021-10-13 00:07:49,943 INFO L791 eck$LassoCheckResult]: Stem: 989#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 990#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 995#L27-3 [2021-10-13 00:07:49,944 INFO L793 eck$LassoCheckResult]: Loop: 995#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 996#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1031#L18 assume !(0 == __VERIFIER_assert_~cond); 1030#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1029#L18-3 assume !(0 == __VERIFIER_assert_~cond); 992#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 993#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 987#L18 assume !(0 == __VERIFIER_assert_~cond); 988#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 991#L18-3 assume !(0 == __VERIFIER_assert_~cond); 994#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1028#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1027#L18 assume !(0 == __VERIFIER_assert_~cond); 1026#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1025#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1024#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1023#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1022#L18 assume !(0 == __VERIFIER_assert_~cond); 1021#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1020#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1019#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1018#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1017#L18 assume !(0 == __VERIFIER_assert_~cond); 1016#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1015#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1014#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1013#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1012#L18 assume !(0 == __VERIFIER_assert_~cond); 1011#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1010#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1009#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1008#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1007#L18 assume !(0 == __VERIFIER_assert_~cond); 1006#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1005#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1004#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1003#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 999#L18 assume !(0 == __VERIFIER_assert_~cond); 1002#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1001#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1000#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 998#L28-2 assume !(main_~j~0 < 8); 997#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 995#L27-3 [2021-10-13 00:07:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-13 00:07:49,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:49,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496037366] [2021-10-13 00:07:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:49,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:49,952 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:49,958 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1675619716, now seen corresponding path program 8 times [2021-10-13 00:07:49,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:49,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699710493] [2021-10-13 00:07:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:49,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:49,972 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:49,991 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:49,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash -532421502, now seen corresponding path program 1 times [2021-10-13 00:07:49,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:49,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167629450] [2021-10-13 00:07:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:49,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:50,007 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:50,052 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:51,017 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:51,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:51,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:51,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:51,018 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:51,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:51,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:51,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-13 00:07:51,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:51,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:51,040 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 00:07:51,045 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 00:07:51,054 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 00:07:51,057 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 00:07:51,062 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 00:07:51,134 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:51,135 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:51,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:51,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:51,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:51,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 00:07:51,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:51,188 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:51,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-13 00:07:51,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:51,234 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:51,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 00:07:51,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:51,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:51,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-13 00:07:51,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:51,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:51,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 00:07:51,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:51,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:51,376 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:51,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:51,379 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:51,380 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:51,380 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:51,380 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:51,380 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:51,380 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,380 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:51,380 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:51,380 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-13 00:07:51,380 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:51,381 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:51,382 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 00:07:51,406 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 00:07:51,413 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 00:07:51,421 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 00:07:51,427 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 00:07:51,497 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:51,502 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:51,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:51,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:51,540 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 00:07:51,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:51,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:51,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:51,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:51,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:51,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:51,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:51,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 00:07:51,557 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:51,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:51,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:51,578 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:51,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 00:07:51,580 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 00:07:51,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:51,587 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:51,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:51,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:51,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:51,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:51,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:51,596 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:51,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:51,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:51,618 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:51,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 00:07:51,623 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 00:07:51,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:51,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:51,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:51,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:51,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:51,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:51,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:51,642 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:51,651 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-13 00:07:51,651 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:07:51,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:51,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:51,659 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:51,665 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:51,665 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:51,665 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:51,666 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nlen~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nlen~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 00:07:51,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 00:07:51,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:51,703 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:51,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:51,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:51,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:51,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:51,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-13 00:07:52,173 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 00:07:52,174 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:52,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 91 transitions. Complement of second has 4 states. [2021-10-13 00:07:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:07:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-13 00:07:52,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 43 letters. [2021-10-13 00:07:52,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:52,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 45 letters. Loop has 43 letters. [2021-10-13 00:07:52,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:52,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 86 letters. [2021-10-13 00:07:52,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:52,229 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 91 transitions. [2021-10-13 00:07:52,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 00:07:52,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 87 states and 90 transitions. [2021-10-13 00:07:52,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-13 00:07:52,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-13 00:07:52,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 90 transitions. [2021-10-13 00:07:52,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:52,236 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-10-13 00:07:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 90 transitions. [2021-10-13 00:07:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 51. [2021-10-13 00:07:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-10-13 00:07:52,243 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-13 00:07:52,243 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-13 00:07:52,243 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-13 00:07:52,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 54 transitions. [2021-10-13 00:07:52,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 00:07:52,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:52,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:52,244 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:07:52,245 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-13 00:07:52,245 INFO L791 eck$LassoCheckResult]: Stem: 1279#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 1280#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1289#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1285#L28-2 [2021-10-13 00:07:52,245 INFO L793 eck$LassoCheckResult]: Loop: 1285#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1275#L18 assume !(0 == __VERIFIER_assert_~cond); 1276#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1281#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1284#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1285#L28-2 [2021-10-13 00:07:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:52,245 INFO L82 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2021-10-13 00:07:52,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:52,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867774653] [2021-10-13 00:07:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:52,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:52,255 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:52,262 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:52,263 INFO L82 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 1 times [2021-10-13 00:07:52,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:52,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589883379] [2021-10-13 00:07:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:52,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:52,271 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:52,276 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:52,277 INFO L82 PathProgramCache]: Analyzing trace with hash 271240594, now seen corresponding path program 1 times [2021-10-13 00:07:52,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:52,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026820343] [2021-10-13 00:07:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:52,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:52,286 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:52,295 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:52,373 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:52,373 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:52,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:52,373 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:52,373 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:52,374 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,374 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:52,374 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:52,374 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-13 00:07:52,374 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:52,374 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:52,376 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 00:07:52,381 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 00:07:52,388 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 00:07:52,390 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 00:07:52,440 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:52,440 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:52,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:52,441 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:52,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 00:07:52,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:52,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:52,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:52,472 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:52,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:52,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:52,519 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:52,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:52,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:52,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 00:07:52,553 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:52,553 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:52,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:52,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:52,600 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:52,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 00:07:52,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:52,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:52,619 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:52,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:52,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:52,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:52,645 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:52,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 00:07:52,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:52,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:52,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:52,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:52,716 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:52,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:52,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:52,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 00:07:52,813 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:52,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:52,817 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:52,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:52,817 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:52,817 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:52,817 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:52,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:52,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:52,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-13 00:07:52,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:52,817 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:52,819 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 00:07:52,839 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 00:07:52,842 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 00:07:52,849 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 00:07:52,903 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:52,903 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:52,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:52,905 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:52,911 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 00:07:52,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:52,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:52,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:52,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:52,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:52,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:52,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:52,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 00:07:52,942 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:52,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:52,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:52,978 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:52,980 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 00:07:52,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 00:07:52,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:52,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:52,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:52,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:52,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:52,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:52,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:53,000 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:53,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:53,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,042 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,057 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 00:07:53,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:53,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:53,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:53,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:53,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:53,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:53,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:53,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 00:07:53,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:53,093 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:07:53,093 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:07:53,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,094 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,101 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:53,102 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:53,102 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:53,102 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-13 00:07:53,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 00:07:53,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:53,130 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:53,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:53,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:53,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:53,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:53,257 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 00:07:53,258 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 00:07:53,259 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:53,291 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 138 states and 145 transitions. Complement of second has 7 states. [2021-10-13 00:07:53,291 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 00:07:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 00:07:53,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-13 00:07:53,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:53,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-13 00:07:53,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:53,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-13 00:07:53,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:53,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 145 transitions. [2021-10-13 00:07:53,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 00:07:53,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 94 states and 98 transitions. [2021-10-13 00:07:53,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-13 00:07:53,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-13 00:07:53,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 98 transitions. [2021-10-13 00:07:53,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:07:53,306 INFO L681 BuchiCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-13 00:07:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 98 transitions. [2021-10-13 00:07:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 51. [2021-10-13 00:07:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-10-13 00:07:53,319 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-13 00:07:53,320 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-13 00:07:53,320 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-13 00:07:53,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 53 transitions. [2021-10-13 00:07:53,320 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 00:07:53,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:07:53,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:07:53,325 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 8, 8, 8, 2, 1, 1, 1, 1] [2021-10-13 00:07:53,325 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-13 00:07:53,327 INFO L791 eck$LassoCheckResult]: Stem: 1516#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 1517#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1525#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1526#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1562#L18 assume !(0 == __VERIFIER_assert_~cond); 1561#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1560#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1520#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1521#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1514#L18 assume !(0 == __VERIFIER_assert_~cond); 1515#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1523#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1524#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1559#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1558#L18 assume !(0 == __VERIFIER_assert_~cond); 1557#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1556#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1555#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1554#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1553#L18 assume !(0 == __VERIFIER_assert_~cond); 1552#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1551#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1550#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1549#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1548#L18 assume !(0 == __VERIFIER_assert_~cond); 1547#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1546#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1545#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1544#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1543#L18 assume !(0 == __VERIFIER_assert_~cond); 1542#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1541#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1540#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1539#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1538#L18 assume !(0 == __VERIFIER_assert_~cond); 1537#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1536#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1535#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1534#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1530#L18 assume !(0 == __VERIFIER_assert_~cond); 1533#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1532#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1531#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1529#L28-2 assume !(main_~j~0 < 8); 1528#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1527#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1519#L28-2 [2021-10-13 00:07:53,329 INFO L793 eck$LassoCheckResult]: Loop: 1519#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1512#L18 assume !(0 == __VERIFIER_assert_~cond); 1513#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1522#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1518#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1519#L28-2 [2021-10-13 00:07:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:53,330 INFO L82 PathProgramCache]: Analyzing trace with hash 674802632, now seen corresponding path program 2 times [2021-10-13 00:07:53,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:53,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65053942] [2021-10-13 00:07:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:53,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:53,360 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:53,396 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:53,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:53,397 INFO L82 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 2 times [2021-10-13 00:07:53,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:53,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370001217] [2021-10-13 00:07:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:53,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:53,409 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:53,425 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:53,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1573708561, now seen corresponding path program 3 times [2021-10-13 00:07:53,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:07:53,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70803262] [2021-10-13 00:07:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:07:53,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:07:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:53,459 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:07:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:07:53,490 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:07:53,571 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:53,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:53,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:53,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:53,572 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:07:53,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:53,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:53,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-13 00:07:53,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:53,573 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:53,575 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 00:07:53,581 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 00:07:53,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:07:53,590 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 00:07:53,649 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:53,649 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:07:53,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,651 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 00:07:53,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:53,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:53,690 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:53,690 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:53,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:53,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,738 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:53,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:53,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 00:07:53,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:53,754 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:53,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:53,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,779 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 00:07:53,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:53,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:53,798 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:07:53,798 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:07:53,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:53,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,825 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:07:53,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:53,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 00:07:53,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:53,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,862 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 00:07:53,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:07:53,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:07:53,905 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:07:53,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-13 00:07:53,908 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:07:53,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:07:53,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:07:53,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:07:53,909 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:07:53,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:07:53,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:07:53,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-13 00:07:53,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:07:53,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:07:53,910 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 00:07:53,925 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 00:07:53,929 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 00:07:53,931 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 00:07:53,986 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:07:53,986 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:07:53,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:53,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:53,988 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:53,999 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 00:07:54,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:54,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:54,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:54,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:54,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:54,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:54,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:54,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 00:07:54,024 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:54,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-13 00:07:54,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:54,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:54,057 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:54,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 00:07:54,058 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 00:07:54,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:54,067 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:54,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:54,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:54,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:54,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:54,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:54,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:54,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:54,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:54,097 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:54,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 00:07:54,098 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 00:07:54,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:54,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:54,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:54,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:54,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:54,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:54,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:54,109 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:07:54,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:54,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:54,134 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:54,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 00:07:54,136 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 00:07:54,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:07:54,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:07:54,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:07:54,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:07:54,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:07:54,145 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:07:54,145 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:07:54,166 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:07:54,167 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:07:54,168 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:07:54,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:07:54,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:07:54,168 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:07:54,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-13 00:07:54,170 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:07:54,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:07:54,170 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:07:54,170 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-13 00:07:54,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:54,195 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:07:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:54,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:54,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:54,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:54,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:54,430 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 00:07:54,430 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 00:07:54,431 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:54,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 128 states and 133 transitions. Complement of second has 7 states. [2021-10-13 00:07:54,448 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 00:07:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 00:07:54,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-13 00:07:54,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:54,449 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:07:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:54,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:54,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:54,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:54,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:54,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:54,751 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 00:07:54,752 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 00:07:54,752 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:54,772 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 128 states and 133 transitions. Complement of second has 7 states. [2021-10-13 00:07:54,773 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 00:07:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 00:07:54,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-13 00:07:54,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:54,774 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:07:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:07:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:54,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:07:54,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:07:54,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:07:54,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:07:55,026 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 00:07:55,027 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 00:07:55,027 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:55,047 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 90 states and 94 transitions. Complement of second has 6 states. [2021-10-13 00:07:55,048 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 00:07:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:07:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-13 00:07:55,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-13 00:07:55,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:55,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 51 letters. Loop has 5 letters. [2021-10-13 00:07:55,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:55,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 10 letters. [2021-10-13 00:07:55,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:07:55,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 94 transitions. [2021-10-13 00:07:55,051 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:07:55,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 0 states and 0 transitions. [2021-10-13 00:07:55,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:07:55,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:07:55,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:07:55,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:07:55,052 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:07:55,052 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:07:55,052 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:07:55,052 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-13 00:07:55,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:07:55,052 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:07:55,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:07:55,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:07:55 BoogieIcfgContainer [2021-10-13 00:07:55,060 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:07:55,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:07:55,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:07:55,060 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:07:55,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:46" (3/4) ... [2021-10-13 00:07:55,064 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:07:55,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:07:55,066 INFO L168 Benchmark]: Toolchain (without parser) took 9405.29 ms. Allocated memory was 88.1 MB in the beginning and 138.4 MB in the end (delta: 50.3 MB). Free memory was 51.6 MB in the beginning and 68.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:55,067 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 67.7 MB in the beginning and 67.7 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:07:55,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.27 ms. Allocated memory is still 88.1 MB. Free memory was 51.4 MB in the beginning and 65.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:55,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.44 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 64.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:55,068 INFO L168 Benchmark]: Boogie Preprocessor took 39.40 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 63.1 MB in the end (delta: 987.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:07:55,068 INFO L168 Benchmark]: RCFGBuilder took 379.87 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 54.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:55,069 INFO L168 Benchmark]: BuchiAutomizer took 8623.41 ms. Allocated memory was 88.1 MB in the beginning and 138.4 MB in the end (delta: 50.3 MB). Free memory was 53.8 MB in the beginning and 68.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:07:55,069 INFO L168 Benchmark]: Witness Printer took 4.38 ms. Allocated memory is still 138.4 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:07:55,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 67.7 MB in the beginning and 67.7 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.27 ms. Allocated memory is still 88.1 MB. Free memory was 51.4 MB in the beginning and 65.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.44 ms. Allocated memory is still 88.1 MB. Free memory was 65.6 MB in the beginning and 64.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.40 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 63.1 MB in the end (delta: 987.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 379.87 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 54.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8623.41 ms. Allocated memory was 88.1 MB in the beginning and 138.4 MB in the end (delta: 50.3 MB). Free memory was 53.8 MB in the beginning and 68.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.38 ms. Allocated memory is still 138.4 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (8 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function nlen + -1 * i and consists of 3 locations. One deterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. One nondeterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.5s and 12 iterations. TraceHistogramMax:8. Analysis of lassos took 6.3s. Construction of modules took 0.2s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 3. Minimization of det autom 9. Minimization of nondet autom 2. Automata minimization 96.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 107 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 51 states and ocurred in iteration 9. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 148/148 HoareTripleCheckerStatistics: 115 SDtfs, 197 SDslu, 163 SDs, 0 SdLazy, 157 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 216.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI8 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax100 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq133 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 54ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:07:55,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:55,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-13 00:07:55,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 00:07:55,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:55,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:56,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:56,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:07:56,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453b648b-3fa8-491f-bfa8-dd17b9605e5b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...