./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8 --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 ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:03:29,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:03:29,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:03:29,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:03:29,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:03:29,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:03:29,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:03:29,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:03:29,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:03:29,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:03:29,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:03:29,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:03:29,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:03:29,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:03:29,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:03:29,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:03:29,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:03:29,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:03:29,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:03:29,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:03:29,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:03:29,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:03:29,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:03:29,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:03:29,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:03:29,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:03:29,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:03:29,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:03:29,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:03:29,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:03:29,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:03:29,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:03:29,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:03:29,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:03:29,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:03:29,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:03:29,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:03:29,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:03:29,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:03:29,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:03:29,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:03:29,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 15:03:29,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:03:29,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:03:29,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:03:29,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:03:29,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:03:29,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:03:29,480 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:03:29,480 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 15:03:29,480 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 15:03:29,480 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 15:03:29,480 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 15:03:29,481 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 15:03:29,481 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 15:03:29,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:03:29,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:03:29,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:03:29,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:03:29,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:03:29,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:03:29,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 15:03:29,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 15:03:29,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 15:03:29,483 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:03:29,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:03:29,483 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 15:03:29,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:03:29,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 15:03:29,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:03:29,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:03:29,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:03:29,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:03:29,485 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 15:03:29,486 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_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 [2022-12-13 15:03:29,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:03:29,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:03:29,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:03:29,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:03:29,730 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:03:29,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2022-12-13 15:03:32,289 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:03:32,489 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:03:32,490 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/sv-benchmarks/c/loop-invgen/nest-if3.i [2022-12-13 15:03:32,495 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/data/ec5507156/243049fde0fc4b35bd22a0029e11ba75/FLAG03054c026 [2022-12-13 15:03:32,883 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/data/ec5507156/243049fde0fc4b35bd22a0029e11ba75 [2022-12-13 15:03:32,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:03:32,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:03:32,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:03:32,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:03:32,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:03:32,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:03:32" (1/1) ... [2022-12-13 15:03:32,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ef24da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:32, skipping insertion in model container [2022-12-13 15:03:32,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:03:32" (1/1) ... [2022-12-13 15:03:32,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:03:32,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:03:33,024 WARN L237 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_24a1d10c-2f39-4993-bad5-c780b85d0c82/sv-benchmarks/c/loop-invgen/nest-if3.i[893,906] [2022-12-13 15:03:33,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:03:33,038 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:03:33,046 WARN L237 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_24a1d10c-2f39-4993-bad5-c780b85d0c82/sv-benchmarks/c/loop-invgen/nest-if3.i[893,906] [2022-12-13 15:03:33,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:03:33,058 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:03:33,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33 WrapperNode [2022-12-13 15:03:33,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:03:33,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:03:33,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:03:33,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:03:33,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,081 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-12-13 15:03:33,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:03:33,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:03:33,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:03:33,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:03:33,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:03:33,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:03:33,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:03:33,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:03:33,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (1/1) ... [2022-12-13 15:03:33,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:33,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:33,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:33,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 15:03:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:03:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:03:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:03:33,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:03:33,207 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:03:33,208 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:03:33,290 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:03:33,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:03:33,295 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:03:33,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:03:33 BoogieIcfgContainer [2022-12-13 15:03:33,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:03:33,297 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 15:03:33,297 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 15:03:33,301 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 15:03:33,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:03:33,301 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 03:03:32" (1/3) ... [2022-12-13 15:03:33,302 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@220627a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 03:03:33, skipping insertion in model container [2022-12-13 15:03:33,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:03:33,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:03:33" (2/3) ... [2022-12-13 15:03:33,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@220627a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 03:03:33, skipping insertion in model container [2022-12-13 15:03:33,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:03:33,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:03:33" (3/3) ... [2022-12-13 15:03:33,305 INFO L332 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2022-12-13 15:03:33,356 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 15:03:33,357 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 15:03:33,357 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 15:03:33,357 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 15:03:33,357 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 15:03:33,357 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 15:03:33,357 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 15:03:33,357 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 15:03:33,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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) [2022-12-13 15:03:33,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-12-13 15:03:33,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:03:33,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:03:33,379 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 15:03:33,379 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 15:03:33,380 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 15:03:33,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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) [2022-12-13 15:03:33,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-12-13 15:03:33,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:03:33,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:03:33,381 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 15:03:33,381 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 15:03:33,386 INFO L748 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L28true assume !!(main_~l~0#1 > 0); 4#L29true assume !!(main_~l~0#1 < 1000000); 3#L30true assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 6#L31-3true [2022-12-13 15:03:33,386 INFO L750 eck$LassoCheckResult]: Loop: 6#L31-3true assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 10#L32-3true assume !(main_~i~0#1 < main_~n~0#1); 16#L32-4true assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~l~0#1 := 1 + main_~l~0#1; 14#L31-2true main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 6#L31-3true [2022-12-13 15:03:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2022-12-13 15:03:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379065280] [2022-12-13 15:03:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:33,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:33,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1699723, now seen corresponding path program 1 times [2022-12-13 15:03:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:33,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230279165] [2022-12-13 15:03:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:33,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:33,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1271724211, now seen corresponding path program 1 times [2022-12-13 15:03:33,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:33,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713894369] [2022-12-13 15:03:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:33,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:33,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:33,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:33,585 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 15:03:33,586 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 15:03:33,586 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 15:03:33,586 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 15:03:33,586 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 15:03:33,586 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:33,586 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 15:03:33,586 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 15:03:33,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration1_Loop [2022-12-13 15:03:33,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 15:03:33,587 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 15:03:33,602 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:33,611 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:33,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:33,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 15:03:33,689 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 15:03:33,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:33,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:33,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:33,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 15:03:33,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:33,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:33,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 15:03:33,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 15:03:33,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:03:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:33,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:33,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 15:03:33,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:33,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:33,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 15:03:33,743 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=4} Honda state: {ULTIMATE.start_main_#t~nondet5#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 15:03:33,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 15:03:33,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:33,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:33,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:33,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 15:03:33,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:33,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:33,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 15:03:33,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:33,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:33,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:33,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 15:03:33,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 15:03:33,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:34,062 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 15:03:34,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 15:03:34,066 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 15:03:34,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 15:03:34,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 15:03:34,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 15:03:34,067 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 15:03:34,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 15:03:34,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 15:03:34,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration1_Loop [2022-12-13 15:03:34,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 15:03:34,067 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 15:03:34,069 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,072 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,074 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 15:03:34,126 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 15:03:34,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 15:03:34,131 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 [2022-12-13 15:03:34,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:34,142 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:34,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:34,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 15:03:34,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:34,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 15:03:34,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:34,147 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 15:03:34,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 15:03:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 15:03:34,153 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 [2022-12-13 15:03:34,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:34,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:34,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:34,164 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-12-13 15:03:34,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:34,165 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-12-13 15:03:34,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:34,168 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 15:03:34,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 15:03:34,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 15:03:34,174 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 [2022-12-13 15:03:34,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:34,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:34,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:34,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 15:03:34,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:34,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 15:03:34,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:34,190 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 15:03:34,194 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 15:03:34,194 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 15:03:34,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 15:03:34,252 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 15:03:34,252 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 15:03:34,252 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 15:03:34,253 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 [] [2022-12-13 15:03:34,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-12-13 15:03:34,262 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 15:03:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:34,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:03:34,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:34,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:03:34,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:34,368 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 15:03:34,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:34,406 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 42 states and 61 transitions. Complement of second has 7 states. [2022-12-13 15:03:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 15:03:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2022-12-13 15:03:34,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 5 letters. Loop has 4 letters. [2022-12-13 15:03:34,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:34,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 9 letters. Loop has 4 letters. [2022-12-13 15:03:34,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:34,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 5 letters. Loop has 8 letters. [2022-12-13 15:03:34,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:34,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 61 transitions. [2022-12-13 15:03:34,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 15:03:34,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 18 states and 22 transitions. [2022-12-13 15:03:34,418 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-12-13 15:03:34,419 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-12-13 15:03:34,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2022-12-13 15:03:34,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 15:03:34,419 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-13 15:03:34,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2022-12-13 15:03:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-12-13 15:03:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 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) [2022-12-13 15:03:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-12-13 15:03:34,437 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-13 15:03:34,437 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-13 15:03:34,438 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 15:03:34,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2022-12-13 15:03:34,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 15:03:34,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:03:34,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:03:34,438 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:03:34,438 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 15:03:34,439 INFO L748 eck$LassoCheckResult]: Stem: 124#$Ultimate##0 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); 125#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~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 122#L28 assume !!(main_~l~0#1 > 0); 123#L29 assume !!(main_~l~0#1 < 1000000); 119#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 120#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 112#L32-3 [2022-12-13 15:03:34,439 INFO L750 eck$LassoCheckResult]: Loop: 112#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 115#L18 assume !(0 == __VERIFIER_assert_~cond#1); 116#L18-2 assume { :end_inline___VERIFIER_assert } true; 111#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 112#L32-3 [2022-12-13 15:03:34,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,439 INFO L85 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2022-12-13 15:03:34,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:34,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347850695] [2022-12-13 15:03:34,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,445 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:34,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1946442, now seen corresponding path program 1 times [2022-12-13 15:03:34,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:34,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96444005] [2022-12-13 15:03:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:34,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 768793561, now seen corresponding path program 1 times [2022-12-13 15:03:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:34,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477483014] [2022-12-13 15:03:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:34,516 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 15:03:34,516 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 15:03:34,516 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 15:03:34,516 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 15:03:34,516 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 15:03:34,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 15:03:34,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 15:03:34,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2022-12-13 15:03:34,517 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 15:03:34,517 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 15:03:34,518 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,522 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,524 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,557 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 15:03:34,557 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 15:03:34,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,558 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 15:03:34,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:34,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:34,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 15:03:34,579 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: [] [2022-12-13 15:03:34,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 15:03:34,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,584 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 15:03:34,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:34,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:34,597 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 15:03:34,597 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 15:03:34,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-12-13 15:03:34,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,603 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 15:03:34,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:34,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:34,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 15:03:34,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 15:03:34,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 15:03:34,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:34,659 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 15:03:34,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 15:03:34,663 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 15:03:34,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 15:03:34,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 15:03:34,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 15:03:34,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 15:03:34,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 15:03:34,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 15:03:34,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2022-12-13 15:03:34,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 15:03:34,663 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 15:03:34,664 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,669 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,670 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:34,700 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 15:03:34,700 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 15:03:34,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,701 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 15:03:34,704 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 [2022-12-13 15:03:34,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:34,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:34,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:34,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 15:03:34,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:34,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 15:03:34,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:34,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 15:03:34,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 15:03:34,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,721 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 15:03:34,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 15:03:34,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:34,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:34,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:34,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 15:03:34,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:34,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 15:03:34,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:34,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 15:03:34,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 15:03:34,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 15:03:34,743 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 [2022-12-13 15:03:34,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:34,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:34,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:34,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 15:03:34,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:34,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 15:03:34,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:34,757 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 15:03:34,760 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 15:03:34,760 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 15:03:34,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:34,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,762 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 15:03:34,764 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 15:03:34,764 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 15:03:34,764 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 15:03:34,764 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-12-13 15:03:34,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 15:03:34,768 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 15:03:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:34,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:03:34,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:34,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:03:34,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:34,817 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 15:03:34,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:34,833 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 38 states and 47 transitions. Complement of second has 7 states. [2022-12-13 15:03:34,834 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 [2022-12-13 15:03:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-12-13 15:03:34,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2022-12-13 15:03:34,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:34,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-12-13 15:03:34,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:34,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2022-12-13 15:03:34,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:34,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 47 transitions. [2022-12-13 15:03:34,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 15:03:34,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 24 states and 30 transitions. [2022-12-13 15:03:34,836 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-12-13 15:03:34,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-12-13 15:03:34,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-12-13 15:03:34,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 15:03:34,837 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 15:03:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-12-13 15:03:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2022-12-13 15:03:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-13 15:03:34,838 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-13 15:03:34,838 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-13 15:03:34,838 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 15:03:34,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2022-12-13 15:03:34,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 15:03:34,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:03:34,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:03:34,839 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:03:34,839 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 15:03:34,839 INFO L748 eck$LassoCheckResult]: Stem: 232#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 233#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 230#L28 assume !!(main_~l~0#1 > 0); 231#L29 assume !!(main_~l~0#1 < 1000000); 227#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 228#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 222#L32-3 assume !(main_~i~0#1 < main_~n~0#1); 229#L32-4 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1; 234#L31-2 main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 235#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 220#L32-3 [2022-12-13 15:03:34,839 INFO L750 eck$LassoCheckResult]: Loop: 220#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 223#L18 assume !(0 == __VERIFIER_assert_~cond#1); 224#L18-2 assume { :end_inline___VERIFIER_assert } true; 219#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 220#L32-3 [2022-12-13 15:03:34,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,839 INFO L85 PathProgramCache]: Analyzing trace with hash 768746824, now seen corresponding path program 1 times [2022-12-13 15:03:34,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:34,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817711204] [2022-12-13 15:03:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:34,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:34,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1946442, now seen corresponding path program 2 times [2022-12-13 15:03:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:34,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809373946] [2022-12-13 15:03:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:03:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:03:34,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:03:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash 37608721, now seen corresponding path program 1 times [2022-12-13 15:03:34,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:03:34,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826301269] [2022-12-13 15:03:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:34,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:03:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:34,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 15:03:34,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 15:03:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:03:34,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826301269] [2022-12-13 15:03:34,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826301269] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:03:34,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556251694] [2022-12-13 15:03:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:03:34,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:03:34,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:34,943 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:03:34,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 15:03:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:34,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:03:34,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:35,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:03:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:35,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556251694] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:03:35,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:03:35,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-13 15:03:35,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938374059] [2022-12-13 15:03:35,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:03:35,070 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 15:03:35,070 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 15:03:35,070 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 15:03:35,070 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 15:03:35,070 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 15:03:35,071 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,071 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 15:03:35,071 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 15:03:35,071 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2022-12-13 15:03:35,071 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 15:03:35,071 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 15:03:35,072 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:35,076 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:35,081 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:35,104 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 15:03:35,104 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 15:03:35,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:35,105 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:35,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 15:03:35,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:35,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:35,126 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 15:03:35,126 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: [] [2022-12-13 15:03:35,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 15:03:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:35,131 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:35,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 15:03:35,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 15:03:35,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:35,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 15:03:35,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:35,149 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:35,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 15:03:35,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 15:03:35,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 15:03:35,188 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 15:03:35,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-12-13 15:03:35,191 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 15:03:35,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 15:03:35,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 15:03:35,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 15:03:35,191 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 15:03:35,191 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,191 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 15:03:35,191 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 15:03:35,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2022-12-13 15:03:35,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 15:03:35,192 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 15:03:35,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:35,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:35,202 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 15:03:35,228 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 15:03:35,228 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 15:03:35,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:35,229 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:35,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 15:03:35,231 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 [2022-12-13 15:03:35,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:35,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:35,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:35,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 15:03:35,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:35,243 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 15:03:35,243 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:35,245 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 15:03:35,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 15:03:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:35,249 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:35,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 15:03:35,251 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 [2022-12-13 15:03:35,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 15:03:35,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 15:03:35,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 15:03:35,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 15:03:35,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 15:03:35,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 15:03:35,263 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 15:03:35,265 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 15:03:35,269 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 15:03:35,269 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 15:03:35,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:03:35,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:03:35,270 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:03:35,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 15:03:35,272 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 15:03:35,272 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 15:03:35,272 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 15:03:35,272 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-12-13 15:03:35,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 15:03:35,276 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 15:03:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:35,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:03:35,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:35,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:03:35,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:35,329 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 15:03:35,330 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:35,345 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 30 states and 37 transitions. Complement of second has 7 states. [2022-12-13 15:03:35,345 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 [2022-12-13 15:03:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-12-13 15:03:35,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-12-13 15:03:35,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:35,347 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 15:03:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:35,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:03:35,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:35,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:03:35,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:35,396 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 15:03:35,396 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:35,409 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 30 states and 37 transitions. Complement of second has 7 states. [2022-12-13 15:03:35,409 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 [2022-12-13 15:03:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-12-13 15:03:35,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-12-13 15:03:35,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:35,410 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 15:03:35,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:03:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:35,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:03:35,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:03:35,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:03:35,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:03:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:03:35,459 INFO L141 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 [2022-12-13 15:03:35,459 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:35,473 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 32 transitions. Complement of second has 6 states. [2022-12-13 15:03:35,474 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 [2022-12-13 15:03:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-12-13 15:03:35,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2022-12-13 15:03:35,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:35,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 14 letters. Loop has 4 letters. [2022-12-13 15:03:35,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:35,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 8 letters. [2022-12-13 15:03:35,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 15:03:35,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2022-12-13 15:03:35,478 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 15:03:35,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2022-12-13 15:03:35,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 15:03:35,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 15:03:35,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 15:03:35,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:03:35,478 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 15:03:35,478 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 15:03:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:03:35,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:03:35,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:03:35,481 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:03:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:35,483 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-12-13 15:03:35,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-12-13 15:03:35,483 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 15:03:35,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 15:03:35,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 15:03:35,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 15:03:35,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 15:03:35,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:03:35,483 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 15:03:35,483 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 15:03:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:03:35,484 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 15:03:35,484 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 15:03:35,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 15:03:35,484 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 15:03:35,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 15:03:35,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 03:03:35 BoogieIcfgContainer [2022-12-13 15:03:35,490 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 15:03:35,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:03:35,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:03:35,490 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:03:35,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:03:33" (3/4) ... [2022-12-13 15:03:35,493 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 15:03:35,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:03:35,493 INFO L158 Benchmark]: Toolchain (without parser) took 2605.30ms. Allocated memory was 140.5MB in the beginning and 230.7MB in the end (delta: 90.2MB). Free memory was 105.2MB in the beginning and 149.9MB in the end (delta: -44.7MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2022-12-13 15:03:35,493 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:03:35,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.10ms. Allocated memory is still 140.5MB. Free memory was 104.8MB in the beginning and 94.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:03:35,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.10ms. Allocated memory is still 140.5MB. Free memory was 94.4MB in the beginning and 93.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:03:35,494 INFO L158 Benchmark]: Boogie Preprocessor took 13.08ms. Allocated memory is still 140.5MB. Free memory was 93.2MB in the beginning and 92.3MB in the end (delta: 894.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:03:35,495 INFO L158 Benchmark]: RCFGBuilder took 201.78ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 82.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:03:35,495 INFO L158 Benchmark]: BuchiAutomizer took 2192.53ms. Allocated memory was 140.5MB in the beginning and 230.7MB in the end (delta: 90.2MB). Free memory was 82.2MB in the beginning and 149.9MB in the end (delta: -67.7MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-12-13 15:03:35,495 INFO L158 Benchmark]: Witness Printer took 2.57ms. Allocated memory is still 230.7MB. Free memory is still 149.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:03:35,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.10ms. Allocated memory is still 140.5MB. Free memory was 104.8MB in the beginning and 94.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.10ms. Allocated memory is still 140.5MB. Free memory was 94.4MB in the beginning and 93.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.08ms. Allocated memory is still 140.5MB. Free memory was 93.2MB in the beginning and 92.3MB in the end (delta: 894.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 201.78ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 82.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2192.53ms. Allocated memory was 140.5MB in the beginning and 230.7MB in the end (delta: 90.2MB). Free memory was 82.2MB in the beginning and 149.9MB in the end (delta: -67.7MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Witness Printer took 2.57ms. Allocated memory is still 230.7MB. Free memory is still 149.9MB. 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 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 5 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 70 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp100 dnf100 smp100 tf109 neg99 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 15:03:35,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 15:03:35,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 15:03:35,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a1d10c-2f39-4993-bad5-c780b85d0c82/bin/uautomizer-uyxdKDjOR8/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