./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa --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 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:03:14,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:03:14,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:03:14,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:03:14,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:03:14,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:03:14,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:03:14,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:03:14,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:03:14,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:03:14,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:03:14,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:03:14,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:03:14,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:03:14,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:03:14,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:03:14,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:03:14,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:03:14,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:03:14,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:03:14,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:03:14,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:03:14,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:03:14,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:03:14,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:03:14,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:03:14,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:03:14,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:03:14,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:03:14,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:03:14,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:03:14,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:03:14,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:03:14,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:03:14,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:03:14,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:03:14,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:03:14,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:03:14,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:03:14,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:03:14,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:03:14,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-06 22:03:14,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:03:14,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:03:14,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:03:14,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:03:14,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:03:14,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:03:14,278 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:03:14,278 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 22:03:14,278 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 22:03:14,278 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 22:03:14,278 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 22:03:14,278 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 22:03:14,278 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 22:03:14,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 22:03:14,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 22:03:14,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:03:14,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:03:14,280 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 22:03:14,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:03:14,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 22:03:14,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:03:14,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:03:14,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:03:14,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:03:14,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:03:14,281 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 22:03:14,282 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_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc [2021-12-06 22:03:14,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:03:14,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:03:14,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:03:14,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:03:14,481 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:03:14,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-invgen/nested6.i [2021-12-06 22:03:14,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/data/f170d6545/2593f480726a451f82622c31eaa264d6/FLAGc55e60b62 [2021-12-06 22:03:14,961 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:03:14,961 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/sv-benchmarks/c/loop-invgen/nested6.i [2021-12-06 22:03:14,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/data/f170d6545/2593f480726a451f82622c31eaa264d6/FLAGc55e60b62 [2021-12-06 22:03:14,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/data/f170d6545/2593f480726a451f82622c31eaa264d6 [2021-12-06 22:03:14,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:03:14,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:03:14,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:03:14,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:03:14,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:03:14,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:03:14" (1/1) ... [2021-12-06 22:03:14,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57781bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:14, skipping insertion in model container [2021-12-06 22:03:14,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:03:14" (1/1) ... [2021-12-06 22:03:14,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:03:14,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:03:15,120 WARN L230 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_3efa244c-72db-44eb-9e11-c1bef9bf4d06/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-12-06 22:03:15,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:03:15,138 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:03:15,148 WARN L230 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_3efa244c-72db-44eb-9e11-c1bef9bf4d06/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-12-06 22:03:15,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:03:15,161 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:03:15,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15 WrapperNode [2021-12-06 22:03:15,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:03:15,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:03:15,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:03:15,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:03:15,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,185 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2021-12-06 22:03:15,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:03:15,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:03:15,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:03:15,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:03:15,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:03:15,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:03:15,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:03:15,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:03:15,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (1/1) ... [2021-12-06 22:03:15,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:15,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:15,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:15,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 22:03:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:03:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:03:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:03:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:03:15,298 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:03:15,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:03:15,380 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:03:15,385 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:03:15,385 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 22:03:15,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:15 BoogieIcfgContainer [2021-12-06 22:03:15,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:03:15,387 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 22:03:15,387 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 22:03:15,390 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 22:03:15,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:03:15,390 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 10:03:14" (1/3) ... [2021-12-06 22:03:15,391 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@427e6682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:03:15, skipping insertion in model container [2021-12-06 22:03:15,391 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:03:15,391 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:15" (2/3) ... [2021-12-06 22:03:15,392 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@427e6682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:03:15, skipping insertion in model container [2021-12-06 22:03:15,392 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:03:15,392 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:15" (3/3) ... [2021-12-06 22:03:15,393 INFO L388 chiAutomizerObserver]: Analyzing ICFG nested6.i [2021-12-06 22:03:15,427 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 22:03:15,427 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 22:03:15,427 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 22:03:15,427 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 22:03:15,427 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 22:03:15,427 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 22:03:15,427 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 22:03:15,428 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 22:03:15,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 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) [2021-12-06 22:03:15,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-06 22:03:15,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:15,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:15,459 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 22:03:15,459 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 22:03:15,459 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 22:03:15,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 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) [2021-12-06 22:03:15,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-06 22:03:15,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:15,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:15,462 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 22:03:15,462 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 22:03:15,467 INFO L791 eck$LassoCheckResult]: Stem: 18#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 24#L28true assume !!(main_~n~0#1 < 1000000); 20#L29true assume main_~k~0#1 == main_~n~0#1; 21#L29-1true main_~i~0#1 := 0; 25#L33-3true [2021-12-06 22:03:15,468 INFO L793 eck$LassoCheckResult]: Loop: 25#L33-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 16#L34-3true assume !true; 22#L33-2true main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 25#L33-3true [2021-12-06 22:03:15,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 1 times [2021-12-06 22:03:15,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:15,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672900459] [2021-12-06 22:03:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:15,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:15,551 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:15,575 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash 53559, now seen corresponding path program 1 times [2021-12-06 22:03:15,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:15,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261698278] [2021-12-06 22:03:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:15,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:15,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261698278] [2021-12-06 22:03:15,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261698278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:15,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:15,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:03:15,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558161648] [2021-12-06 22:03:15,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:15,618 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:03:15,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:15,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:03:15,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:03:15,652 INFO L87 Difference]: Start difference. First operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 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) Second operand has 2 states, 2 states have (on average 1.5) 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) [2021-12-06 22:03:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:15,659 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-12-06 22:03:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:03:15,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2021-12-06 22:03:15,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-12-06 22:03:15,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 21 transitions. [2021-12-06 22:03:15,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-06 22:03:15,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-06 22:03:15,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2021-12-06 22:03:15,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:03:15,673 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-06 22:03:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2021-12-06 22:03:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-06 22:03:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 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) [2021-12-06 22:03:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-12-06 22:03:15,697 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-06 22:03:15,697 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-06 22:03:15,697 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 22:03:15,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2021-12-06 22:03:15,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-12-06 22:03:15,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:15,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:15,699 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 22:03:15,699 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 22:03:15,699 INFO L791 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 59#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 66#L28 assume !!(main_~n~0#1 < 1000000); 62#L29 assume main_~k~0#1 == main_~n~0#1; 63#L29-1 main_~i~0#1 := 0; 64#L33-3 [2021-12-06 22:03:15,699 INFO L793 eck$LassoCheckResult]: Loop: 64#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 70#L34-3 assume !(main_~j~0#1 < main_~n~0#1); 65#L33-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 64#L33-3 [2021-12-06 22:03:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 2 times [2021-12-06 22:03:15,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:15,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934049843] [2021-12-06 22:03:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:15,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:15,709 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:15,718 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:15,719 INFO L85 PathProgramCache]: Analyzing trace with hash 51885, now seen corresponding path program 1 times [2021-12-06 22:03:15,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:15,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104877318] [2021-12-06 22:03:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:15,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:15,728 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:15,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash 177631334, now seen corresponding path program 1 times [2021-12-06 22:03:15,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:15,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595510918] [2021-12-06 22:03:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:15,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:15,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:15,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595510918] [2021-12-06 22:03:15,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595510918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:15,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:15,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:03:15,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793356893] [2021-12-06 22:03:15,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:15,837 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:15,837 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:15,837 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:15,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:15,838 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:15,838 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:15,838 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:15,838 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:15,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2021-12-06 22:03:15,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:15,838 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:15,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:15,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:15,897 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:15,897 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:15,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:15,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:15,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 22:03:15,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:15,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:15,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:15,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:15,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:15,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 22:03:15,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:15,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:16,151 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:16,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 22:03:16,154 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:16,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:16,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:16,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:16,155 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:16,155 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:16,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:16,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2021-12-06 22:03:16,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:16,155 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:16,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,179 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:16,183 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:16,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:16,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:16,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 22:03:16,186 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 [2021-12-06 22:03:16,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:16,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:16,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:16,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:16,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:16,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:16,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:16,199 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:16,205 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:16,205 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:16,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:16,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:16,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 22:03:16,209 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:16,209 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:16,209 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:16,209 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-06 22:03:16,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 22:03:16,231 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:16,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:16,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:16,268 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:16,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:16,288 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 [2021-12-06 22:03:16,288 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 4 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) [2021-12-06 22:03:16,321 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 4. 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 32 states and 40 transitions. Complement of second has 4 states. [2021-12-06 22:03:16,322 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 [2021-12-06 22:03:16,322 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) [2021-12-06 22:03:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2021-12-06 22:03:16,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-06 22:03:16,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:16,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-06 22:03:16,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:16,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-06 22:03:16,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:16,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2021-12-06 22:03:16,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-06 22:03:16,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 31 states and 38 transitions. [2021-12-06 22:03:16,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-06 22:03:16,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-06 22:03:16,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 38 transitions. [2021-12-06 22:03:16,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:16,328 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-12-06 22:03:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 38 transitions. [2021-12-06 22:03:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-12-06 22:03:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 29 states have internal predecessors, (37), 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) [2021-12-06 22:03:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-12-06 22:03:16,331 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-12-06 22:03:16,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:03:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:03:16,331 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-12-06 22:03:16,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:16,352 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2021-12-06 22:03:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:03:16,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 67 transitions. [2021-12-06 22:03:16,354 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2021-12-06 22:03:16,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 55 states and 67 transitions. [2021-12-06 22:03:16,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-06 22:03:16,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-12-06 22:03:16,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 67 transitions. [2021-12-06 22:03:16,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:16,356 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 67 transitions. [2021-12-06 22:03:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 67 transitions. [2021-12-06 22:03:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2021-12-06 22:03:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 30 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) [2021-12-06 22:03:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-12-06 22:03:16,359 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-12-06 22:03:16,359 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-12-06 22:03:16,359 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 22:03:16,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2021-12-06 22:03:16,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-06 22:03:16,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:16,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:16,360 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:03:16,360 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 22:03:16,360 INFO L791 eck$LassoCheckResult]: Stem: 239#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 250#L28 assume !!(main_~n~0#1 < 1000000); 245#L29 assume main_~k~0#1 == main_~n~0#1; 246#L29-1 main_~i~0#1 := 0; 247#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 257#L34-3 [2021-12-06 22:03:16,361 INFO L793 eck$LassoCheckResult]: Loop: 257#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 268#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 251#L36-3 assume !(main_~k~0#1 < main_~n~0#1); 252#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 257#L34-3 [2021-12-06 22:03:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 1 times [2021-12-06 22:03:16,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:16,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092243130] [2021-12-06 22:03:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:16,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,375 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:16,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1850253, now seen corresponding path program 1 times [2021-12-06 22:03:16,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:16,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253232906] [2021-12-06 22:03:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:16,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:16,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:16,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253232906] [2021-12-06 22:03:16,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253232906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:16,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:16,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:03:16,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953635370] [2021-12-06 22:03:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:16,392 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:03:16,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:03:16,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:03:16,393 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-06 22:03:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:16,412 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-12-06 22:03:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:03:16,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2021-12-06 22:03:16,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-06 22:03:16,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 40 transitions. [2021-12-06 22:03:16,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-06 22:03:16,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-06 22:03:16,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 40 transitions. [2021-12-06 22:03:16,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:16,415 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-12-06 22:03:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 40 transitions. [2021-12-06 22:03:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-06 22:03:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 32 states have internal predecessors, (40), 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) [2021-12-06 22:03:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-12-06 22:03:16,417 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-12-06 22:03:16,417 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-12-06 22:03:16,417 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 22:03:16,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 40 transitions. [2021-12-06 22:03:16,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-06 22:03:16,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:16,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:16,418 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:03:16,418 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:03:16,418 INFO L791 eck$LassoCheckResult]: Stem: 312#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 313#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 323#L28 assume !!(main_~n~0#1 < 1000000); 318#L29 assume main_~k~0#1 == main_~n~0#1; 319#L29-1 main_~i~0#1 := 0; 320#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 332#L34-3 [2021-12-06 22:03:16,419 INFO L793 eck$LassoCheckResult]: Loop: 332#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 343#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 340#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 314#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 315#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 328#L18-8 assume { :end_inline___VERIFIER_assert } true; 329#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 332#L34-3 [2021-12-06 22:03:16,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:16,419 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 2 times [2021-12-06 22:03:16,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:16,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256297227] [2021-12-06 22:03:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:16,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,426 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,433 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash 25769677, now seen corresponding path program 1 times [2021-12-06 22:03:16,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:16,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503423511] [2021-12-06 22:03:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:16,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,443 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,450 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:16,451 INFO L85 PathProgramCache]: Analyzing trace with hash 824203776, now seen corresponding path program 1 times [2021-12-06 22:03:16,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:16,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024569477] [2021-12-06 22:03:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:16,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,461 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:16,471 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:16,537 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:16,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:16,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:16,537 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:16,537 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:16,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:16,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:16,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2021-12-06 22:03:16,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:16,538 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:16,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,580 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:16,580 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:16,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:16,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:16,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 22:03:16,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:16,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:16,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:16,610 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:16,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-06 22:03:16,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:16,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:16,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 22:03:16,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:16,636 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:16,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 22:03:16,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:16,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:16,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 22:03:16,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:16,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:16,966 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:16,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 22:03:16,969 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:16,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:16,970 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:16,970 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:16,970 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:16,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:16,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:16,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:16,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2021-12-06 22:03:16,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:16,970 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:16,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:16,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,006 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:17,007 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:17,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,008 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 22:03:17,009 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 [2021-12-06 22:03:17,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:17,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:17,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:17,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:17,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:17,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:17,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:17,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:17,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:17,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 22:03:17,038 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 [2021-12-06 22:03:17,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:17,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:17,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:17,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:17,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:17,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:17,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:17,048 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:17,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 22:03:17,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,067 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 22:03:17,069 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 [2021-12-06 22:03:17,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:17,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:17,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:17,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:17,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:17,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:17,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:17,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:17,082 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-06 22:03:17,082 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 22:03:17,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 22:03:17,084 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:17,084 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:17,085 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:17,085 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-06 22:03:17,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-06 22:03:17,104 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:17,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:17,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:17,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:17,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:17,160 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 [2021-12-06 22:03:17,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-12-06 22:03:17,180 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) Result 84 states and 103 transitions. Complement of second has 7 states. [2021-12-06 22:03:17,181 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 [2021-12-06 22:03:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-12-06 22:03:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-12-06 22:03:17,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 7 letters. [2021-12-06 22:03:17,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:17,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 7 letters. [2021-12-06 22:03:17,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:17,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 14 letters. [2021-12-06 22:03:17,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:17,183 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 103 transitions. [2021-12-06 22:03:17,185 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-12-06 22:03:17,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 66 states and 81 transitions. [2021-12-06 22:03:17,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-06 22:03:17,186 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-06 22:03:17,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 81 transitions. [2021-12-06 22:03:17,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:17,186 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 81 transitions. [2021-12-06 22:03:17,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 81 transitions. [2021-12-06 22:03:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2021-12-06 22:03:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 50 states have internal predecessors, (62), 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) [2021-12-06 22:03:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-12-06 22:03:17,190 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-12-06 22:03:17,190 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-12-06 22:03:17,190 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 22:03:17,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 62 transitions. [2021-12-06 22:03:17,190 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-12-06 22:03:17,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:17,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:17,191 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:03:17,191 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 22:03:17,191 INFO L791 eck$LassoCheckResult]: Stem: 492#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 493#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 503#L28 assume !!(main_~n~0#1 < 1000000); 498#L29 assume main_~k~0#1 == main_~n~0#1; 499#L29-1 main_~i~0#1 := 0; 500#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 524#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 527#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 504#L36-3 [2021-12-06 22:03:17,191 INFO L793 eck$LassoCheckResult]: Loop: 504#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 505#L18 assume !(0 == __VERIFIER_assert_~cond#1); 520#L18-2 assume { :end_inline___VERIFIER_assert } true; 514#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 504#L36-3 [2021-12-06 22:03:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash 177631345, now seen corresponding path program 1 times [2021-12-06 22:03:17,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:17,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286940473] [2021-12-06 22:03:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:17,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,197 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,203 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:17,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2192714, now seen corresponding path program 1 times [2021-12-06 22:03:17,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:17,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150835898] [2021-12-06 22:03:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:17,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,209 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,213 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2764218, now seen corresponding path program 1 times [2021-12-06 22:03:17,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:17,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023770639] [2021-12-06 22:03:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:17,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,220 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:17,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 22:03:17,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 22:03:17,270 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:17,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:17,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:17,270 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:17,270 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:17,270 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:17,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:17,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2021-12-06 22:03:17,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:17,270 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:17,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:17,298 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:17,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,298 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 22:03:17,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:17,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:17,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:17,308 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:17,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 22:03:17,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 22:03:17,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:17,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:17,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 22:03:17,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,363 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 22:03:17,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:17,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:17,533 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:17,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:17,536 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:17,536 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:17,536 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:17,536 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:17,536 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:17,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:17,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:17,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2021-12-06 22:03:17,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:17,537 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:17,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,561 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:17,562 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:17,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 22:03:17,564 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 [2021-12-06 22:03:17,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:17,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:17,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:17,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:17,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:17,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:17,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:17,573 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:17,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-06 22:03:17,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 22:03:17,594 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 [2021-12-06 22:03:17,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:17,601 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:17,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:17,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:17,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:17,602 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:17,602 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:17,603 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:17,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-06 22:03:17,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,622 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 22:03:17,623 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 [2021-12-06 22:03:17,631 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:17,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:17,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:17,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:17,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:17,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:17,632 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:17,634 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:17,637 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:17,637 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 22:03:17,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,638 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 22:03:17,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:17,639 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:17,640 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:17,640 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~k~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2021-12-06 22:03:17,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 22:03:17,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:17,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:17,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:17,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:17,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:17,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:17,699 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 [2021-12-06 22:03:17,699 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 62 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-06 22:03:17,718 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 62 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 157 states and 192 transitions. Complement of second has 7 states. [2021-12-06 22:03:17,718 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 [2021-12-06 22:03:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-06 22:03:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2021-12-06 22:03:17,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-06 22:03:17,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:17,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-06 22:03:17,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:17,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 8 letters. Loop has 8 letters. [2021-12-06 22:03:17,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:17,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 192 transitions. [2021-12-06 22:03:17,721 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 30 [2021-12-06 22:03:17,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 114 states and 138 transitions. [2021-12-06 22:03:17,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-12-06 22:03:17,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-06 22:03:17,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 138 transitions. [2021-12-06 22:03:17,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:17,723 INFO L681 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-12-06 22:03:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 138 transitions. [2021-12-06 22:03:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 79. [2021-12-06 22:03:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 78 states have internal predecessors, (95), 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) [2021-12-06 22:03:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2021-12-06 22:03:17,728 INFO L704 BuchiCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-12-06 22:03:17,728 INFO L587 BuchiCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-12-06 22:03:17,728 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 22:03:17,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states and 95 transitions. [2021-12-06 22:03:17,728 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 23 [2021-12-06 22:03:17,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:17,728 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:17,729 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:03:17,729 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:03:17,729 INFO L791 eck$LassoCheckResult]: Stem: 760#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 761#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 771#L28 assume !!(main_~n~0#1 < 1000000); 766#L29 assume main_~k~0#1 == main_~n~0#1; 767#L29-1 main_~i~0#1 := 0; 768#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 790#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 808#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 814#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 813#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 812#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 811#L18-8 assume { :end_inline___VERIFIER_assert } true; 810#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 804#L34-3 assume !(main_~j~0#1 < main_~n~0#1); 806#L33-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 803#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 801#L34-3 [2021-12-06 22:03:17,729 INFO L793 eck$LassoCheckResult]: Loop: 801#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 799#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 800#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 809#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 807#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 805#L18-8 assume { :end_inline___VERIFIER_assert } true; 802#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 801#L34-3 [2021-12-06 22:03:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash -473310882, now seen corresponding path program 1 times [2021-12-06 22:03:17,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:17,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269387670] [2021-12-06 22:03:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:17,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:17,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:17,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269387670] [2021-12-06 22:03:17,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269387670] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:03:17,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732047639] [2021-12-06 22:03:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:17,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:03:17,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,773 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 22:03:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:17,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:03:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:17,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:03:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:17,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732047639] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:03:17,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:03:17,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-12-06 22:03:17,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783541486] [2021-12-06 22:03:17,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:03:17,902 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:03:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 25769677, now seen corresponding path program 2 times [2021-12-06 22:03:17,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:17,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847008112] [2021-12-06 22:03:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:17,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:17,911 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:17,948 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:17,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:17,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:17,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:17,949 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:17,949 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,949 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:17,949 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:17,949 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2021-12-06 22:03:17,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:17,949 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:17,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:17,982 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:17,982 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:17,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:17,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:17,983 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:17,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 22:03:17,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:17,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:17,992 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:17,993 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:18,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-06 22:03:18,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,012 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-06 22:03:18,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:18,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:18,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:18,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:18,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-06 22:03:18,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,047 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 22:03:18,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:18,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:18,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 22:03:18,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,076 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 22:03:18,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:18,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:18,376 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:18,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-06 22:03:18,379 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:18,379 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:18,379 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:18,379 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:18,379 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:18,379 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,379 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:18,379 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:18,379 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2021-12-06 22:03:18,379 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:18,379 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:18,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:18,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:18,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:18,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:18,412 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:18,412 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:18,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,413 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 22:03:18,414 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 [2021-12-06 22:03:18,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:18,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:18,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:18,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:18,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:18,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:18,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:18,422 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:18,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-06 22:03:18,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,441 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-06 22:03:18,445 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 [2021-12-06 22:03:18,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:18,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:18,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:18,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:18,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:18,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:18,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:18,457 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:18,460 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:18,460 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:18,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,464 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-06 22:03:18,465 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:18,465 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:18,465 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:18,465 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-06 22:03:18,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-06 22:03:18,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:18,485 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:18,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:18,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:18,541 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 [2021-12-06 22:03:18,541 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-06 22:03:18,557 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) Result 145 states and 177 transitions. Complement of second has 7 states. [2021-12-06 22:03:18,557 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 [2021-12-06 22:03:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-06 22:03:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-12-06 22:03:18,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 7 letters. [2021-12-06 22:03:18,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:18,558 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:18,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:18,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:18,610 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 [2021-12-06 22:03:18,610 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-06 22:03:18,623 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) Result 145 states and 177 transitions. Complement of second has 7 states. [2021-12-06 22:03:18,624 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 [2021-12-06 22:03:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-06 22:03:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-12-06 22:03:18,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 7 letters. [2021-12-06 22:03:18,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:18,625 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:18,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:18,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:18,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:18,682 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 [2021-12-06 22:03:18,682 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-06 22:03:18,701 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) Result 146 states and 177 transitions. Complement of second has 6 states. [2021-12-06 22:03:18,701 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 [2021-12-06 22:03:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-06 22:03:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2021-12-06 22:03:18,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 7 letters. [2021-12-06 22:03:18,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:18,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 23 letters. Loop has 7 letters. [2021-12-06 22:03:18,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:18,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 14 letters. [2021-12-06 22:03:18,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:18,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 177 transitions. [2021-12-06 22:03:18,707 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-06 22:03:18,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 87 states and 105 transitions. [2021-12-06 22:03:18,708 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-06 22:03:18,708 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-06 22:03:18,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 105 transitions. [2021-12-06 22:03:18,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:18,708 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 105 transitions. [2021-12-06 22:03:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 105 transitions. [2021-12-06 22:03:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2021-12-06 22:03:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 55 states have internal predecessors, (69), 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) [2021-12-06 22:03:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-06 22:03:18,713 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-06 22:03:18,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:03:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:03:18,714 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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) [2021-12-06 22:03:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:18,782 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions. [2021-12-06 22:03:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:03:18,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 206 transitions. [2021-12-06 22:03:18,785 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-12-06 22:03:18,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 169 states and 202 transitions. [2021-12-06 22:03:18,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-06 22:03:18,787 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-12-06 22:03:18,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 202 transitions. [2021-12-06 22:03:18,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:18,787 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 202 transitions. [2021-12-06 22:03:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 202 transitions. [2021-12-06 22:03:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 70. [2021-12-06 22:03:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 69 states have internal predecessors, (85), 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) [2021-12-06 22:03:18,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-12-06 22:03:18,793 INFO L704 BuchiCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-12-06 22:03:18,793 INFO L587 BuchiCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-12-06 22:03:18,793 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 22:03:18,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 85 transitions. [2021-12-06 22:03:18,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 22:03:18,794 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:18,794 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:18,795 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:03:18,795 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 22:03:18,795 INFO L791 eck$LassoCheckResult]: Stem: 1857#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 1858#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 1870#L28 assume !!(main_~n~0#1 < 1000000); 1861#L29 assume main_~k~0#1 == main_~n~0#1; 1862#L29-1 main_~i~0#1 := 0; 1863#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1880#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 1884#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 1868#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1869#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1878#L18-2 assume { :end_inline___VERIFIER_assert } true; 1875#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1876#L36-3 assume !(main_~k~0#1 < main_~n~0#1); 1920#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1886#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 1885#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 1866#L36-3 [2021-12-06 22:03:18,795 INFO L793 eck$LassoCheckResult]: Loop: 1866#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1867#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1877#L18-2 assume { :end_inline___VERIFIER_assert } true; 1874#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1866#L36-3 [2021-12-06 22:03:18,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:18,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1604037446, now seen corresponding path program 1 times [2021-12-06 22:03:18,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:18,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850521246] [2021-12-06 22:03:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:18,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:18,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:18,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850521246] [2021-12-06 22:03:18,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850521246] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:03:18,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922781729] [2021-12-06 22:03:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:18,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:03:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,830 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 22:03:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:18,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:03:18,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:18,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:03:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:18,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922781729] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:03:18,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:03:18,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2021-12-06 22:03:18,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204057829] [2021-12-06 22:03:18,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:03:18,887 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:03:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2192714, now seen corresponding path program 2 times [2021-12-06 22:03:18,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:18,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812672064] [2021-12-06 22:03:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:18,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:18,891 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:18,893 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:18,921 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:18,922 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:18,922 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:18,922 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:18,922 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:18,922 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,922 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:18,922 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:18,922 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2021-12-06 22:03:18,922 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:18,922 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:18,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:18,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:18,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:18,947 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:18,947 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:18,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,948 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-06 22:03:18,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:18,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:18,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:18,957 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:18,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-06 22:03:18,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:18,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:18,976 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:18,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-06 22:03:18,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:18,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:18,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:18,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:19,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:19,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:19,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:19,010 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:19,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-06 22:03:19,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:19,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:19,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:19,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:19,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:19,040 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:19,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-06 22:03:19,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:19,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:19,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:19,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:19,216 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:19,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:19,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:19,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:19,216 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:19,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:19,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:19,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:19,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2021-12-06 22:03:19,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:19,217 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:19,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:19,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:19,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:19,240 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:19,240 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:19,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:19,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:19,241 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:19,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-06 22:03:19,242 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 [2021-12-06 22:03:19,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:19,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:19,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:19,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:19,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:19,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:19,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:19,251 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:19,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:19,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:19,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:19,270 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:19,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-06 22:03:19,271 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 [2021-12-06 22:03:19,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:19,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:19,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:19,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:19,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:19,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:19,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:19,280 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:19,283 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-06 22:03:19,283 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 22:03:19,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:19,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:19,284 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:19,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-06 22:03:19,285 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:19,285 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:19,285 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:19,285 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-12-06 22:03:19,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-06 22:03:19,304 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:19,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:19,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:19,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:19,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:19,348 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 [2021-12-06 22:03:19,348 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 22:03:19,364 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 135 states and 167 transitions. Complement of second has 7 states. [2021-12-06 22:03:19,364 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 [2021-12-06 22:03:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 22:03:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2021-12-06 22:03:19,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-06 22:03:19,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:19,365 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:19,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:19,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:19,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:19,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-06 22:03:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:19,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:19,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:19,414 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 [2021-12-06 22:03:19,414 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 22:03:19,427 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 135 states and 167 transitions. Complement of second has 7 states. [2021-12-06 22:03:19,427 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 [2021-12-06 22:03:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 22:03:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2021-12-06 22:03:19,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-06 22:03:19,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:19,428 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:19,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:19,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:19,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:19,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:19,476 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 [2021-12-06 22:03:19,476 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 22:03:19,492 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 111 states and 136 transitions. Complement of second has 6 states. [2021-12-06 22:03:19,492 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 [2021-12-06 22:03:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-06 22:03:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2021-12-06 22:03:19,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-06 22:03:19,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:19,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 20 letters. Loop has 4 letters. [2021-12-06 22:03:19,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:19,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 8 letters. [2021-12-06 22:03:19,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:19,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 136 transitions. [2021-12-06 22:03:19,494 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:03:19,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 0 states and 0 transitions. [2021-12-06 22:03:19,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 22:03:19,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 22:03:19,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 22:03:19,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:03:19,495 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:19,495 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:19,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:03:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:03:19,495 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-12-06 22:03:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:19,495 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-06 22:03:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:03:19,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-06 22:03:19,496 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:03:19,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:03:19,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 22:03:19,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 22:03:19,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 22:03:19,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:03:19,496 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:19,496 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:19,496 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:19,496 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-06 22:03:19,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:03:19,496 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:03:19,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 22:03:19,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 10:03:19 BoogieIcfgContainer [2021-12-06 22:03:19,501 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 22:03:19,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:03:19,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:03:19,502 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:03:19,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:15" (3/4) ... [2021-12-06 22:03:19,504 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 22:03:19,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:03:19,504 INFO L158 Benchmark]: Toolchain (without parser) took 4526.43ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 72.0MB in the beginning and 86.9MB in the end (delta: -14.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-06 22:03:19,504 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:03:19,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.69ms. Allocated memory is still 111.1MB. Free memory was 71.8MB in the beginning and 84.4MB in the end (delta: -12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:03:19,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.70ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 83.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:03:19,505 INFO L158 Benchmark]: Boogie Preprocessor took 14.68ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 81.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:03:19,505 INFO L158 Benchmark]: RCFGBuilder took 185.05ms. Allocated memory is still 111.1MB. Free memory was 81.8MB in the beginning and 72.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:03:19,506 INFO L158 Benchmark]: BuchiAutomizer took 4114.10ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 72.2MB in the beginning and 86.9MB in the end (delta: -14.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-12-06 22:03:19,506 INFO L158 Benchmark]: Witness Printer took 2.33ms. Allocated memory is still 134.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:03:19,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.69ms. Allocated memory is still 111.1MB. Free memory was 71.8MB in the beginning and 84.4MB in the end (delta: -12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.70ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 83.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.68ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 81.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 185.05ms. Allocated memory is still 111.1MB. Free memory was 81.8MB in the beginning and 72.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4114.10ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 72.2MB in the beginning and 86.9MB in the end (delta: -14.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Witness Printer took 2.33ms. Allocated memory is still 134.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * i + n and consists of 3 locations. One deterministic module has affine ranking function -1 * j + n and consists of 4 locations. One deterministic module has affine ranking function n + -1 * k and consists of 4 locations. One nondeterministic module has affine ranking function -1 * j + n and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * k and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 205 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 79 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 382 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 373 mSDsluCounter, 458 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 207 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 320 IncrementalHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 251 mSDtfsCounter, 320 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 22:03:19,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 22:03:19,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 22:03:19,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3efa244c-72db-44eb-9e11-c1bef9bf4d06/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE