./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.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_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/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_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/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_5cbd2d1e-02c1-4f47-b579-819cacf41f48/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 f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a --- 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 19:28:28,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:28:28,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:28:28,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:28:28,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:28:28,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:28:28,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:28:28,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:28:28,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:28:28,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:28:28,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:28:28,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:28:28,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:28:28,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:28:28,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:28:28,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:28:28,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:28:28,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:28:28,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:28:28,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:28:28,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:28:28,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:28:28,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:28:28,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:28:28,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:28:28,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:28:28,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:28:28,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:28:28,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:28:28,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:28:28,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:28:28,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:28:28,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:28:28,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:28:28,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:28:28,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:28:28,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:28:28,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:28:28,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:28:28,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:28:28,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:28:28,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 19:28:28,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:28:28,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:28:28,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:28:28,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:28:28,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:28:28,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:28:28,368 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:28:28,368 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 19:28:28,369 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 19:28:28,369 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 19:28:28,369 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 19:28:28,369 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 19:28:28,369 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 19:28:28,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:28:28,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:28:28,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:28:28,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:28:28,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:28:28,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:28:28,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 19:28:28,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 19:28:28,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 19:28:28,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:28:28,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:28:28,372 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 19:28:28,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:28:28,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 19:28:28,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:28:28,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:28:28,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:28:28,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:28:28,374 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 19:28:28,374 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_5cbd2d1e-02c1-4f47-b579-819cacf41f48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2022-12-13 19:28:28,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:28:28,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:28:28,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:28:28,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:28:28,569 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:28:28,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loop-invgen/nested9.i [2022-12-13 19:28:31,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:28:31,357 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:28:31,358 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/sv-benchmarks/c/loop-invgen/nested9.i [2022-12-13 19:28:31,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/data/751cb5330/ddbacf7f19734e3b938b165cc1f0ee5d/FLAGa5d3fec30 [2022-12-13 19:28:31,376 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/data/751cb5330/ddbacf7f19734e3b938b165cc1f0ee5d [2022-12-13 19:28:31,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:28:31,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:28:31,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:28:31,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:28:31,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:28:31,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25db3070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31, skipping insertion in model container [2022-12-13 19:28:31,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:28:31,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:28:31,545 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_5cbd2d1e-02c1-4f47-b579-819cacf41f48/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2022-12-13 19:28:31,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:28:31,562 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:28:31,572 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_5cbd2d1e-02c1-4f47-b579-819cacf41f48/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2022-12-13 19:28:31,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:28:31,586 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:28:31,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31 WrapperNode [2022-12-13 19:28:31,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:28:31,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:28:31,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:28:31,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:28:31,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,612 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-12-13 19:28:31,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:28:31,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:28:31,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:28:31,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:28:31,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,626 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:28:31,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:28:31,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:28:31,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:28:31,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (1/1) ... [2022-12-13 19:28:31,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:31,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:31,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:31,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 19:28:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:28:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:28:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:28:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:28:31,749 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:28:31,751 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:28:31,838 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:28:31,843 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:28:31,843 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 19:28:31,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:28:31 BoogieIcfgContainer [2022-12-13 19:28:31,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:28:31,845 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 19:28:31,845 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 19:28:31,848 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 19:28:31,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:28:31,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 07:28:31" (1/3) ... [2022-12-13 19:28:31,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f519781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:28:31, skipping insertion in model container [2022-12-13 19:28:31,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:28:31,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:28:31" (2/3) ... [2022-12-13 19:28:31,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f519781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:28:31, skipping insertion in model container [2022-12-13 19:28:31,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:28:31,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:28:31" (3/3) ... [2022-12-13 19:28:31,851 INFO L332 chiAutomizerObserver]: Analyzing ICFG nested9.i [2022-12-13 19:28:31,893 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 19:28:31,893 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 19:28:31,893 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 19:28:31,893 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 19:28:31,893 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 19:28:31,893 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 19:28:31,893 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 19:28:31,893 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 19:28:31,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 19:28:31,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-12-13 19:28:31,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:31,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:31,914 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:31,914 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 19:28:31,914 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 19:28:31,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 19:28:31,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-12-13 19:28:31,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:31,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:31,916 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:31,917 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 19:28:31,922 INFO L748 eck$LassoCheckResult]: Stem: 16#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3#L30true assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 6#L31true assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 8#L32true assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 5#L33true assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 4#L33-1true main_~i~0#1 := 0; 21#L34-3true [2022-12-13 19:28:31,922 INFO L750 eck$LassoCheckResult]: Loop: 21#L34-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 11#L35-3true assume !true; 10#L34-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 21#L34-3true [2022-12-13 19:28:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2022-12-13 19:28:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:31,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435567432] [2022-12-13 19:28:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:31,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 62657, now seen corresponding path program 1 times [2022-12-13 19:28:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:32,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328041709] [2022-12-13 19:28:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:32,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:32,048 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 19:28:32,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:32,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328041709] [2022-12-13 19:28:32,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328041709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:32,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:28:32,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:28:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640312510] [2022-12-13 19:28:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:32,053 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:28:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:28:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:28:32,078 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:32,083 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2022-12-13 19:28:32,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2022-12-13 19:28:32,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-12-13 19:28:32,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2022-12-13 19:28:32,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2022-12-13 19:28:32,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-12-13 19:28:32,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2022-12-13 19:28:32,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:28:32,089 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 19:28:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2022-12-13 19:28:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 19:28:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 19:28:32,107 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 19:28:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:28:32,110 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 19:28:32,110 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 19:28:32,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2022-12-13 19:28:32,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-12-13 19:28:32,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:32,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:32,111 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:32,111 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 19:28:32,111 INFO L748 eck$LassoCheckResult]: Stem: 62#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 57#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 48#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 49#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 53#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 52#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 50#L33-1 main_~i~0#1 := 0; 51#L34-3 [2022-12-13 19:28:32,111 INFO L750 eck$LassoCheckResult]: Loop: 51#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 59#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 58#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 51#L34-3 [2022-12-13 19:28:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2022-12-13 19:28:32,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:32,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277364506] [2022-12-13 19:28:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash 61789, now seen corresponding path program 1 times [2022-12-13 19:28:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:32,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920032028] [2022-12-13 19:28:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash 763900017, now seen corresponding path program 1 times [2022-12-13 19:28:32,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:32,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589084383] [2022-12-13 19:28:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:32,229 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:32,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:32,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:32,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:32,230 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:32,230 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,230 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:32,230 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:32,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2022-12-13 19:28:32,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:32,230 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:32,245 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 19:28:32,254 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 19:28:32,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:32,303 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:32,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:32,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:32,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 19:28:32,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:32,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:32,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:32,324 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 19:28:32,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:32,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:32,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:32,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 19:28:32,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:32,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:32,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 19:28:32,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:32,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:32,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 19:28:32,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:32,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:32,544 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:32,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 19:28:32,548 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:32,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:32,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:32,548 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:32,548 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:32,548 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,548 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:32,548 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:32,548 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2022-12-13 19:28:32,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:32,549 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:32,550 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 19:28:32,559 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 19:28:32,585 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:32,588 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:32,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:32,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:32,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 19:28:32,592 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 19:28:32,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:32,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:32,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:32,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:32,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:32,606 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:32,606 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:32,609 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:32,613 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:28:32,613 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 19:28:32,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:32,636 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:32,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 19:28:32,638 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:32,638 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:32,638 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:32,639 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-12-13 19:28:32,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:32,644 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:32,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:32,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:32,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:32,688 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:28:32,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:32,736 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 19:28:32,738 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-12-13 19:28:32,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 19:28:32,806 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 40 states and 50 transitions. Complement of second has 8 states. [2022-12-13 19:28:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-12-13 19:28:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 19:28:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-12-13 19:28:32,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2022-12-13 19:28:32,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:32,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 10 letters. Loop has 3 letters. [2022-12-13 19:28:32,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:32,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 6 letters. [2022-12-13 19:28:32,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:32,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2022-12-13 19:28:32,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-12-13 19:28:32,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 48 transitions. [2022-12-13 19:28:32,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2022-12-13 19:28:32,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-12-13 19:28:32,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 48 transitions. [2022-12-13 19:28:32,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:32,812 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-12-13 19:28:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 48 transitions. [2022-12-13 19:28:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2022-12-13 19:28:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 states have internal predecessors, (35), 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 19:28:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-12-13 19:28:32,815 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-12-13 19:28:32,815 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-12-13 19:28:32,815 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 19:28:32,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2022-12-13 19:28:32,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-12-13 19:28:32,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:32,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:32,817 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:32,817 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:28:32,817 INFO L748 eck$LassoCheckResult]: Stem: 183#$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);~__BLAST_NONDET~0 := 0; 172#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~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 160#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 161#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 165#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 164#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 162#L33-1 main_~i~0#1 := 0; 163#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 177#L35-3 [2022-12-13 19:28:32,817 INFO L750 eck$LassoCheckResult]: Loop: 177#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 166#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 168#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 184#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 173#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 174#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 177#L35-3 [2022-12-13 19:28:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2022-12-13 19:28:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:32,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132895322] [2022-12-13 19:28:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:32,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 1 times [2022-12-13 19:28:32,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:32,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113893292] [2022-12-13 19:28:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:32,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:32,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:32,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:32,842 INFO L85 PathProgramCache]: Analyzing trace with hash -696653093, now seen corresponding path program 1 times [2022-12-13 19:28:32,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:32,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32118494] [2022-12-13 19:28:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:28:32,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:32,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32118494] [2022-12-13 19:28:32,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32118494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:32,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:28:32,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:28:32,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236367976] [2022-12-13 19:28:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:32,941 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:32,941 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:32,941 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:32,941 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:32,941 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:32,941 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,941 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:32,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:32,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2022-12-13 19:28:32,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:32,942 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:32,943 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 19:28:32,955 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 19:28:32,957 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 19:28:32,993 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:32,993 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:32,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:32,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:32,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:32,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 19:28:32,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:32,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:33,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 19:28:33,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 19:28:33,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:33,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:33,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:33,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:33,218 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:33,218 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:33,218 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:33,218 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:33,219 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:33,219 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,219 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:33,219 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:33,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2022-12-13 19:28:33,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:33,219 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:33,220 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 19:28:33,232 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 19:28:33,234 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 19:28:33,269 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:33,269 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:33,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 19:28:33,272 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 19:28:33,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:33,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:33,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:33,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:33,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:33,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:33,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:33,288 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:33,292 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-12-13 19:28:33,292 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:28:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 19:28:33,295 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:33,295 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:33,295 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:33,295 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-12-13 19:28:33,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 19:28:33,299 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:33,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:33,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:33,327 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:28:33,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:33,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 19:28:33,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 19:28:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:28:33,396 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-12-13 19:28:33,396 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9 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 19:28:33,511 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9. 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) Result 136 states and 169 transitions. Complement of second has 13 states. [2022-12-13 19:28:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 19:28:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. 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 19:28:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2022-12-13 19:28:33,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 6 letters. [2022-12-13 19:28:33,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:33,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 14 letters. Loop has 6 letters. [2022-12-13 19:28:33,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:33,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 12 letters. [2022-12-13 19:28:33,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:33,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 169 transitions. [2022-12-13 19:28:33,517 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2022-12-13 19:28:33,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 115 states and 145 transitions. [2022-12-13 19:28:33,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2022-12-13 19:28:33,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2022-12-13 19:28:33,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 145 transitions. [2022-12-13 19:28:33,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:33,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 145 transitions. [2022-12-13 19:28:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 145 transitions. [2022-12-13 19:28:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2022-12-13 19:28:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.308641975308642) internal successors, (106), 80 states have internal predecessors, (106), 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 19:28:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2022-12-13 19:28:33,525 INFO L240 hiAutomatonCegarLoop]: Abstraction has 81 states and 106 transitions. [2022-12-13 19:28:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:28:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:28:33,526 INFO L87 Difference]: Start difference. First operand 81 states and 106 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:33,535 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-13 19:28:33,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2022-12-13 19:28:33,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-12-13 19:28:33,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 36 transitions. [2022-12-13 19:28:33,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-12-13 19:28:33,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-12-13 19:28:33,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2022-12-13 19:28:33,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:33,537 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-12-13 19:28:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2022-12-13 19:28:33,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-12-13 19:28:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 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 19:28:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-12-13 19:28:33,539 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-12-13 19:28:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:28:33,539 INFO L428 stractBuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-12-13 19:28:33,539 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 19:28:33,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2022-12-13 19:28:33,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-12-13 19:28:33,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:33,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:33,540 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:33,540 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:28:33,540 INFO L748 eck$LassoCheckResult]: Stem: 541#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 523#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 517#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 518#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 522#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 521#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 519#L33-1 main_~i~0#1 := 0; 520#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 535#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 536#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 545#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 534#L35-3 [2022-12-13 19:28:33,540 INFO L750 eck$LassoCheckResult]: Loop: 534#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 524#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 526#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 542#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 530#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 531#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 534#L35-3 [2022-12-13 19:28:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 2 times [2022-12-13 19:28:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:33,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012289879] [2022-12-13 19:28:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:33,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:33,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:33,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 2 times [2022-12-13 19:28:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:33,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60102263] [2022-12-13 19:28:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:33,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:33,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash -669865, now seen corresponding path program 2 times [2022-12-13 19:28:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:33,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029959300] [2022-12-13 19:28:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:33,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:33,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029959300] [2022-12-13 19:28:33,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029959300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:33,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:28:33,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:28:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423248079] [2022-12-13 19:28:33,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:33,654 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:33,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:33,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:33,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:33,654 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:33,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:33,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:33,655 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2022-12-13 19:28:33,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:33,655 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:33,656 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 19:28:33,657 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 19:28:33,669 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 19:28:33,698 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:33,698 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:33,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 19:28:33,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:33,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:33,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:33,713 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:28:33,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 19:28:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 19:28:33,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:33,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:33,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:33,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 19:28:33,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:33,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:33,933 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:33,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:33,937 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:33,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:33,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:33,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:33,937 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:33,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:33,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:33,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2022-12-13 19:28:33,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:33,937 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:33,938 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 19:28:33,940 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 19:28:33,947 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 19:28:33,978 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:33,978 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:33,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,979 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 19:28:33,981 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 19:28:33,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:33,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:33,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:33,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:33,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:33,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:33,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:33,994 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:33,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:33,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:33,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:33,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:33,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 19:28:33,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:28:34,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:34,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:34,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:34,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:34,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:34,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:34,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:34,015 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:34,019 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-12-13 19:28:34,020 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:28:34,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 19:28:34,023 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:34,023 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:34,023 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:34,023 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-12-13 19:28:34,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 19:28:34,027 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:34,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:34,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:34,054 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:28:34,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:28:34,122 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2022-12-13 19:28:34,122 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:34,216 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 105 states and 134 transitions. Complement of second has 14 states. [2022-12-13 19:28:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2022-12-13 19:28:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 37 transitions. [2022-12-13 19:28:34,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 11 letters. Loop has 6 letters. [2022-12-13 19:28:34,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:34,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 17 letters. Loop has 6 letters. [2022-12-13 19:28:34,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:34,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 11 letters. Loop has 12 letters. [2022-12-13 19:28:34,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:34,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 134 transitions. [2022-12-13 19:28:34,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2022-12-13 19:28:34,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 103 states and 132 transitions. [2022-12-13 19:28:34,220 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-12-13 19:28:34,220 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2022-12-13 19:28:34,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 132 transitions. [2022-12-13 19:28:34,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:34,220 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 132 transitions. [2022-12-13 19:28:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 132 transitions. [2022-12-13 19:28:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 65. [2022-12-13 19:28:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.323076923076923) internal successors, (86), 64 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2022-12-13 19:28:34,226 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 86 transitions. [2022-12-13 19:28:34,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:28:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:28:34,227 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:34,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:34,244 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-12-13 19:28:34,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2022-12-13 19:28:34,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 19:28:34,246 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 31 states and 37 transitions. [2022-12-13 19:28:34,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-12-13 19:28:34,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 19:28:34,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2022-12-13 19:28:34,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:34,246 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-12-13 19:28:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2022-12-13 19:28:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-13 19:28:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-12-13 19:28:34,249 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-12-13 19:28:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:28:34,250 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-12-13 19:28:34,250 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 19:28:34,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2022-12-13 19:28:34,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 19:28:34,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:34,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:34,251 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:34,252 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:34,252 INFO L748 eck$LassoCheckResult]: Stem: 890#$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);~__BLAST_NONDET~0 := 0; 876#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~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 866#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 867#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 871#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 870#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 868#L33-1 main_~i~0#1 := 0; 869#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 882#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 883#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 896#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 881#L35-3 [2022-12-13 19:28:34,252 INFO L750 eck$LassoCheckResult]: Loop: 881#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 872#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 873#L18 assume !(0 == __VERIFIER_assert_~cond#1); 888#L18-2 assume { :end_inline___VERIFIER_assert } true; 884#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 885#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 891#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 892#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 877#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 878#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 881#L35-3 [2022-12-13 19:28:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 3 times [2022-12-13 19:28:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:34,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128967329] [2022-12-13 19:28:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:34,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:34,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:34,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1137044896, now seen corresponding path program 1 times [2022-12-13 19:28:34,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:34,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650200734] [2022-12-13 19:28:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:34,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:34,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:34,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:34,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1923390994, now seen corresponding path program 1 times [2022-12-13 19:28:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:34,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499440174] [2022-12-13 19:28:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:34,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:34,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:34,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:34,408 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:34,409 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:34,409 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:34,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:34,409 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:34,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,409 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:34,409 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:34,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2022-12-13 19:28:34,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:34,409 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:34,410 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 19:28:34,412 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 19:28:34,415 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 19:28:34,416 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 19:28:34,418 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 19:28:34,476 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:34,477 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:34,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,477 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 19:28:34,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:34,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:34,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:34,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:28:34,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 19:28:34,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,495 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-12-13 19:28:34,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:34,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:34,514 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:34,514 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 19:28:34,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:34,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,518 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 19:28:34,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:34,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:34,532 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:34,532 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 19:28:34,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 19:28:34,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 19:28:34,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:34,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:34,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:34,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:28:34,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:34,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,553 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 19:28:34,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:34,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:34,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 19:28:34,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,572 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 19:28:34,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:34,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:34,813 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:34,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:34,817 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:34,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:34,817 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:34,817 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:34,817 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:34,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:34,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:34,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2022-12-13 19:28:34,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:34,817 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:34,818 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 19:28:34,822 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 19:28:34,823 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 19:28:34,824 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 19:28:34,825 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 19:28:34,872 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:34,872 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:34,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,873 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 19:28:34,875 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 19:28:34,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:34,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:34,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:34,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:34,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:34,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:34,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:34,889 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:34,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:34,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,893 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 19:28:34,895 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 19:28:34,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:34,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:34,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:34,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:34,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:34,906 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:34,906 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:34,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:34,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 19:28:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,912 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 19:28:34,914 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 19:28:34,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:34,924 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:34,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:34,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:34,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:34,925 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:34,925 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:34,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:34,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 19:28:34,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,931 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 19:28:34,933 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 19:28:34,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:34,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:34,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:34,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:34,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:34,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:34,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:34,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:34,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 19:28:34,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,948 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 19:28:34,950 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 19:28:34,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:34,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:34,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:34,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:34,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:34,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:34,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:34,966 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:34,969 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-12-13 19:28:34,970 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:28:34,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:34,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:34,971 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:34,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 19:28:34,972 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:34,973 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:34,973 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:34,973 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 19:28:34,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:34,976 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:34,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:34,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:34,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:35,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:35,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:28:35,025 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 19:28:35,025 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 19:28:35,042 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Result 53 states and 65 transitions. Complement of second has 6 states. [2022-12-13 19:28:35,042 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 19:28:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 19:28:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-12-13 19:28:35,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 10 letters. [2022-12-13 19:28:35,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:35,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 21 letters. Loop has 10 letters. [2022-12-13 19:28:35,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:35,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 20 letters. [2022-12-13 19:28:35,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:35,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 65 transitions. [2022-12-13 19:28:35,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 19:28:35,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 40 states and 49 transitions. [2022-12-13 19:28:35,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-12-13 19:28:35,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-12-13 19:28:35,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 49 transitions. [2022-12-13 19:28:35,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:35,046 INFO L218 hiAutomatonCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-12-13 19:28:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 49 transitions. [2022-12-13 19:28:35,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-12-13 19:28:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 38 states have internal predecessors, (48), 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 19:28:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-12-13 19:28:35,048 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-12-13 19:28:35,048 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-12-13 19:28:35,048 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 19:28:35,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2022-12-13 19:28:35,048 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 19:28:35,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:35,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:35,049 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:35,049 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:35,049 INFO L748 eck$LassoCheckResult]: Stem: 1058#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1045#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1035#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1036#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1040#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1039#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1037#L33-1 main_~i~0#1 := 0; 1038#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1049#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1050#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1073#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1072#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1041#L36-3 [2022-12-13 19:28:35,049 INFO L750 eck$LassoCheckResult]: Loop: 1041#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1042#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1055#L18-2 assume { :end_inline___VERIFIER_assert } true; 1051#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1052#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1059#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1048#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1041#L36-3 [2022-12-13 19:28:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 1 times [2022-12-13 19:28:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:35,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834469593] [2022-12-13 19:28:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:35,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:35,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 1 times [2022-12-13 19:28:35,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:35,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285181742] [2022-12-13 19:28:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:35,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:35,069 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:35,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash 891852308, now seen corresponding path program 2 times [2022-12-13 19:28:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176915546] [2022-12-13 19:28:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:35,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:35,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176915546] [2022-12-13 19:28:35,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176915546] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:35,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303245006] [2022-12-13 19:28:35,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:35,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:35,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:35,134 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:35,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 19:28:35,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:35,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:35,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:28:35,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:35,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:35,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303245006] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:35,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:28:35,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 19:28:35,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821849859] [2022-12-13 19:28:35,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:35,307 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:35,308 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:35,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:35,308 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:35,308 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:35,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:35,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:35,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2022-12-13 19:28:35,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:35,308 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:35,309 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 19:28:35,311 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 19:28:35,320 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 19:28:35,324 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 19:28:35,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 19:28:35,362 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:35,363 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:35,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:35,364 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:35,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-12-13 19:28:35,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:35,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:35,377 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:35,377 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:28:35,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-12-13 19:28:35,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:35,381 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:35,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 19:28:35,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:35,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:35,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-12-13 19:28:35,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:35,398 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:35,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 19:28:35,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:35,401 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:35,807 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:35,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:35,811 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:35,811 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:35,811 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:35,811 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:35,811 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:35,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:35,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:35,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2022-12-13 19:28:35,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:35,812 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:35,812 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 19:28:35,817 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 19:28:35,825 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 19:28:35,826 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 19:28:35,860 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:35,860 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:35,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:35,861 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:35,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-12-13 19:28:35,863 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 19:28:35,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:35,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:35,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:35,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:35,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:35,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:35,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:35,876 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:35,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:35,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:35,879 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:35,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 19:28:35,881 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 19:28:35,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:35,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:35,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:35,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:35,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:35,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:35,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:35,895 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:35,899 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-12-13 19:28:35,899 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:28:35,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:35,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:35,900 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:35,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 19:28:35,902 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:35,902 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:35,902 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:35,902 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-12-13 19:28:35,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-12-13 19:28:35,905 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:35,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:35,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:35,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:35,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:35,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:35,944 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 19:28:35,944 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:35,961 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 109 transitions. Complement of second has 7 states. [2022-12-13 19:28:35,962 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 19:28:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-12-13 19:28:35,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 7 letters. [2022-12-13 19:28:35,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:35,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 19 letters. Loop has 7 letters. [2022-12-13 19:28:35,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:35,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 14 letters. [2022-12-13 19:28:35,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:35,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 109 transitions. [2022-12-13 19:28:35,964 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-12-13 19:28:35,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 84 states and 105 transitions. [2022-12-13 19:28:35,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2022-12-13 19:28:35,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-12-13 19:28:35,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 105 transitions. [2022-12-13 19:28:35,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:35,964 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-12-13 19:28:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 105 transitions. [2022-12-13 19:28:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-12-13 19:28:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 80 states have internal predecessors, (102), 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 19:28:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-12-13 19:28:35,967 INFO L240 hiAutomatonCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-12-13 19:28:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:35,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:28:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:28:35,968 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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 19:28:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:36,014 INFO L93 Difference]: Finished difference Result 125 states and 154 transitions. [2022-12-13 19:28:36,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 154 transitions. [2022-12-13 19:28:36,015 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2022-12-13 19:28:36,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 107 states and 133 transitions. [2022-12-13 19:28:36,016 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-12-13 19:28:36,016 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-12-13 19:28:36,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 133 transitions. [2022-12-13 19:28:36,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:36,016 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 133 transitions. [2022-12-13 19:28:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 133 transitions. [2022-12-13 19:28:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2022-12-13 19:28:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 86 states have internal predecessors, (111), 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 19:28:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2022-12-13 19:28:36,020 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 111 transitions. [2022-12-13 19:28:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:28:36,020 INFO L428 stractBuchiCegarLoop]: Abstraction has 87 states and 111 transitions. [2022-12-13 19:28:36,020 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 19:28:36,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 111 transitions. [2022-12-13 19:28:36,021 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-12-13 19:28:36,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:36,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:36,021 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:36,021 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 19:28:36,022 INFO L748 eck$LassoCheckResult]: Stem: 1588#$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);~__BLAST_NONDET~0 := 0; 1577#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~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1567#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1568#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1572#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1571#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1569#L33-1 main_~i~0#1 := 0; 1570#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1593#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1619#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1616#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1580#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1573#L36-3 [2022-12-13 19:28:36,022 INFO L750 eck$LassoCheckResult]: Loop: 1573#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1574#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1586#L18-2 assume { :end_inline___VERIFIER_assert } true; 1583#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1573#L36-3 [2022-12-13 19:28:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 2 times [2022-12-13 19:28:36,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:36,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374978918] [2022-12-13 19:28:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:36,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:36,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:36,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2408202, now seen corresponding path program 1 times [2022-12-13 19:28:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:36,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999665665] [2022-12-13 19:28:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:36,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:36,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:36,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1523990718, now seen corresponding path program 1 times [2022-12-13 19:28:36,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:36,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146915702] [2022-12-13 19:28:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:36,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:36,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:36,077 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:36,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:36,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:36,078 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:36,078 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:36,078 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:36,078 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:36,078 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:36,078 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2022-12-13 19:28:36,078 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:36,078 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:36,079 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 19:28:36,082 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 19:28:36,083 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 19:28:36,107 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:36,107 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:36,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:36,108 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:36,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 19:28:36,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:36,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:36,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:36,128 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 19:28:36,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-12-13 19:28:36,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:36,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:36,131 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:36,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 19:28:36,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:36,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:36,145 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:36,145 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:28:36,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-12-13 19:28:36,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:36,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:36,148 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:36,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 19:28:36,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:36,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:36,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:36,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:36,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:36,165 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:36,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-12-13 19:28:36,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:36,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:37,997 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:38,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-12-13 19:28:38,001 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:38,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:38,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:38,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:38,001 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:38,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:38,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:38,001 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2022-12-13 19:28:38,001 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:38,001 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:38,002 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 19:28:38,004 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 19:28:38,008 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 19:28:38,025 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:38,025 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:38,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,026 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-12-13 19:28:38,029 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 19:28:38,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:38,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:38,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:38,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:38,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:38,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:38,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:38,041 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:38,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:38,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,044 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-12-13 19:28:38,046 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 19:28:38,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:38,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:38,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:38,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:38,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:38,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:38,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:38,060 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:38,063 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:28:38,063 INFO L444 ModelExtractionUtils]: 1 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 19:28:38,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,064 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-12-13 19:28:38,066 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:38,066 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:38,066 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:38,066 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~k~0#1) = 4*ULTIMATE.start_main_~n~0#1 + 2*ULTIMATE.start_main_~i~0#1 - 2*ULTIMATE.start_main_~k~0#1 + 1 Supporting invariants [] [2022-12-13 19:28:38,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-12-13 19:28:38,069 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:38,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:38,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:38,091 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:28:38,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:38,132 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 19:28:38,133 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-12-13 19:28:38,133 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:38,168 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 156 states and 196 transitions. Complement of second has 9 states. [2022-12-13 19:28:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-12-13 19:28:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-12-13 19:28:38,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2022-12-13 19:28:38,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:38,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 16 letters. Loop has 4 letters. [2022-12-13 19:28:38,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:38,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 12 letters. Loop has 8 letters. [2022-12-13 19:28:38,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:38,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2022-12-13 19:28:38,170 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-12-13 19:28:38,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 121 states and 150 transitions. [2022-12-13 19:28:38,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-12-13 19:28:38,171 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-12-13 19:28:38,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 150 transitions. [2022-12-13 19:28:38,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:38,171 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121 states and 150 transitions. [2022-12-13 19:28:38,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 150 transitions. [2022-12-13 19:28:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 87. [2022-12-13 19:28:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 86 states have internal predecessors, (109), 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 19:28:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2022-12-13 19:28:38,174 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-12-13 19:28:38,174 INFO L428 stractBuchiCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-12-13 19:28:38,174 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-12-13 19:28:38,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 109 transitions. [2022-12-13 19:28:38,174 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-12-13 19:28:38,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:38,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:38,175 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:38,175 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:38,175 INFO L748 eck$LassoCheckResult]: Stem: 1911#$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);~__BLAST_NONDET~0 := 0; 1897#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~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1886#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1887#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1891#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1890#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1888#L33-1 main_~i~0#1 := 0; 1889#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1914#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1932#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1928#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1900#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1901#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1948#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1953#L18-2 assume { :end_inline___VERIFIER_assert } true; 1951#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1947#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1945#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1936#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1935#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1933#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1922#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1920#L36-3 [2022-12-13 19:28:38,175 INFO L750 eck$LassoCheckResult]: Loop: 1920#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1907#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1908#L18-2 assume { :end_inline___VERIFIER_assert } true; 1918#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1917#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1912#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1913#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1920#L36-3 [2022-12-13 19:28:38,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash 504421370, now seen corresponding path program 3 times [2022-12-13 19:28:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:38,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192694137] [2022-12-13 19:28:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:38,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:38,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:38,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 2 times [2022-12-13 19:28:38,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:38,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915265022] [2022-12-13 19:28:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:38,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:38,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:38,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:38,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:38,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1334545203, now seen corresponding path program 4 times [2022-12-13 19:28:38,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:38,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633586972] [2022-12-13 19:28:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:38,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:28:38,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:38,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633586972] [2022-12-13 19:28:38,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633586972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893684717] [2022-12-13 19:28:38,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:28:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,254 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-13 19:28:38,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:28:38,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:38,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:28:38,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:28:38,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:38,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-12-13 19:28:38,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-12-13 19:28:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:28:38,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893684717] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:38,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:28:38,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-12-13 19:28:38,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588220274] [2022-12-13 19:28:38,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:38,448 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:38,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:38,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:38,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:38,448 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:38,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:38,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:38,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2022-12-13 19:28:38,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:38,448 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:38,449 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 19:28:38,451 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 19:28:38,459 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 19:28:38,463 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 19:28:38,498 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:38,498 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:38,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,499 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-12-13 19:28:38,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:38,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:38,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:28:38,513 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:28:38,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-12-13 19:28:38,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,516 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-12-13 19:28:38,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:38,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:38,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2022-12-13 19:28:38,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,534 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-12-13 19:28:38,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:38,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:38,944 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:38,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-12-13 19:28:38,948 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:38,948 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:38,948 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:38,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:38,948 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:38,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,948 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:38,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:38,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2022-12-13 19:28:38,948 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:38,948 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:38,949 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 19:28:38,952 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 19:28:38,953 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 19:28:38,959 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 19:28:38,985 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:38,985 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:38,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:38,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:38,986 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:38,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-12-13 19:28:38,988 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 19:28:38,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:39,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:39,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:39,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:39,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:39,001 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:39,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:39,003 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:39,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:39,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:39,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:39,006 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:39,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-12-13 19:28:39,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:28:39,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:39,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:39,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:39,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:39,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:39,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:39,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:39,020 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:39,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:39,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:39,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:39,023 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:39,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-12-13 19:28:39,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:28:39,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:39,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:39,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:39,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:39,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:39,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:39,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:39,039 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:39,042 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-12-13 19:28:39,042 INFO L444 ModelExtractionUtils]: 1 out of 6 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-12-13 19:28:39,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:39,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:39,043 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:39,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-12-13 19:28:39,045 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:39,045 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:39,045 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:39,045 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-12-13 19:28:39,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2022-12-13 19:28:39,048 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:39,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:39,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:39,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:39,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:39,097 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 19:28:39,097 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:28:39,116 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 127 states and 158 transitions. Complement of second has 7 states. [2022-12-13 19:28:39,117 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 19:28:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:28:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-12-13 19:28:39,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2022-12-13 19:28:39,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:39,118 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:28:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:39,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:39,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:39,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:39,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:39,173 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 19:28:39,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:28:39,190 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 127 states and 158 transitions. Complement of second has 7 states. [2022-12-13 19:28:39,190 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 19:28:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:28:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-12-13 19:28:39,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2022-12-13 19:28:39,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:39,191 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:28:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:39,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:39,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:39,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:39,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:39,245 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 19:28:39,246 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:28:39,259 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 145 states and 182 transitions. Complement of second has 6 states. [2022-12-13 19:28:39,259 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 19:28:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:28:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2022-12-13 19:28:39,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 7 letters. [2022-12-13 19:28:39,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:39,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 29 letters. Loop has 7 letters. [2022-12-13 19:28:39,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:39,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 14 letters. [2022-12-13 19:28:39,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:39,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 182 transitions. [2022-12-13 19:28:39,262 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-12-13 19:28:39,263 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 106 states and 132 transitions. [2022-12-13 19:28:39,263 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2022-12-13 19:28:39,263 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-12-13 19:28:39,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-12-13 19:28:39,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:39,263 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-12-13 19:28:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-12-13 19:28:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2022-12-13 19:28:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 66 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-12-13 19:28:39,266 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-12-13 19:28:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:28:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:28:39,266 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:28:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:39,342 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2022-12-13 19:28:39,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 144 transitions. [2022-12-13 19:28:39,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 19:28:39,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 124 states and 144 transitions. [2022-12-13 19:28:39,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-12-13 19:28:39,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-12-13 19:28:39,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 144 transitions. [2022-12-13 19:28:39,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:28:39,344 INFO L218 hiAutomatonCegarLoop]: Abstraction has 124 states and 144 transitions. [2022-12-13 19:28:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states and 144 transitions. [2022-12-13 19:28:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2022-12-13 19:28:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 84 states have internal predecessors, (103), 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 19:28:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2022-12-13 19:28:39,347 INFO L240 hiAutomatonCegarLoop]: Abstraction has 85 states and 103 transitions. [2022-12-13 19:28:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:28:39,348 INFO L428 stractBuchiCegarLoop]: Abstraction has 85 states and 103 transitions. [2022-12-13 19:28:39,348 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-12-13 19:28:39,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 103 transitions. [2022-12-13 19:28:39,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 19:28:39,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:28:39,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:28:39,349 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:39,349 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 19:28:39,349 INFO L748 eck$LassoCheckResult]: Stem: 3075#$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);~__BLAST_NONDET~0 := 0; 3056#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~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3050#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 3051#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 3055#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 3054#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 3052#L33-1 main_~i~0#1 := 0; 3053#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3078#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3084#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3085#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3063#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3064#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3110#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3119#L18-2 assume { :end_inline___VERIFIER_assert } true; 3115#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3109#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 3107#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 3101#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3100#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3079#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3080#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3105#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3070#L18 [2022-12-13 19:28:39,349 INFO L750 eck$LassoCheckResult]: Loop: 3070#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3071#L18-2 assume { :end_inline___VERIFIER_assert } true; 3067#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3068#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3070#L18 [2022-12-13 19:28:39,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1542806666, now seen corresponding path program 5 times [2022-12-13 19:28:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:39,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562523660] [2022-12-13 19:28:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:39,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:39,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:39,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2619672, now seen corresponding path program 2 times [2022-12-13 19:28:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:39,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256172287] [2022-12-13 19:28:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:39,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:39,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:39,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:39,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1902519795, now seen corresponding path program 6 times [2022-12-13 19:28:39,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:39,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185248810] [2022-12-13 19:28:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:39,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:28:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:28:39,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:28:39,420 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:39,420 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:39,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:39,421 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:39,421 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:28:39,421 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:39,421 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:39,421 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:39,421 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2022-12-13 19:28:39,421 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:39,421 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:39,422 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 19:28:39,445 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 19:28:39,571 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:39,571 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:28:39,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:39,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:39,572 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:39,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-12-13 19:28:39,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:28:39,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:39,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:39,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:39,594 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:39,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-12-13 19:28:39,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:28:39,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:28:40,226 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:28:40,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:40,230 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:28:40,230 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:28:40,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:28:40,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:28:40,230 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:28:40,230 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:40,230 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:28:40,230 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:28:40,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2022-12-13 19:28:40,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:28:40,230 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:28:40,231 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 19:28:40,233 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 19:28:40,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2022-12-13 19:28:40,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:28:40,367 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:28:40,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:40,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:40,368 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:40,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-12-13 19:28:40,370 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 19:28:40,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:40,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:40,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:40,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:28:40,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:40,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:28:40,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:40,382 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:28:40,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2022-12-13 19:28:40,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:40,385 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:40,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-12-13 19:28:40,387 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 19:28:40,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:28:40,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:28:40,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:28:40,397 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2022-12-13 19:28:40,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:28:40,401 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2022-12-13 19:28:40,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:28:40,409 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:28:40,413 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:28:40,413 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 19:28:40,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:28:40,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:40,414 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:28:40,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-12-13 19:28:40,416 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:28:40,416 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:28:40,416 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:28:40,416 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-12-13 19:28:40,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:40,419 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:28:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:40,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:40,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:40,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:40,461 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 19:28:40,462 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 19:28:40,462 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:28:40,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 187 states and 212 transitions. Complement of second has 7 states. [2022-12-13 19:28:40,479 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 19:28:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:28:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-12-13 19:28:40,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2022-12-13 19:28:40,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:40,480 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:28:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:40,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:40,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:40,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:40,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:40,521 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 19:28:40,522 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 19:28:40,522 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:28:40,536 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 187 states and 212 transitions. Complement of second has 7 states. [2022-12-13 19:28:40,536 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 19:28:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:28:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-12-13 19:28:40,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2022-12-13 19:28:40,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:40,537 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:28:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:40,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:40,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:40,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:28:40,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:40,578 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 19:28:40,579 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 19:28:40,579 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:28:40,596 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 135 states and 154 transitions. Complement of second has 6 states. [2022-12-13 19:28:40,596 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 19:28:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19:28:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2022-12-13 19:28:40,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 4 letters. [2022-12-13 19:28:40,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:40,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 27 letters. Loop has 4 letters. [2022-12-13 19:28:40,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:40,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 8 letters. [2022-12-13 19:28:40,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:28:40,597 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 154 transitions. [2022-12-13 19:28:40,598 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 19:28:40,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-12-13 19:28:40,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 19:28:40,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 19:28:40,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 19:28:40,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:28:40,599 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:28:40,599 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:28:40,599 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:28:40,599 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-12-13 19:28:40,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 19:28:40,599 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 19:28:40,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 19:28:40,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 07:28:40 BoogieIcfgContainer [2022-12-13 19:28:40,605 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 19:28:40,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:28:40,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:28:40,606 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:28:40,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:28:31" (3/4) ... [2022-12-13 19:28:40,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:28:40,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:28:40,608 INFO L158 Benchmark]: Toolchain (without parser) took 9229.67ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 112.8MB in the beginning and 105.5MB in the end (delta: 7.3MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2022-12-13 19:28:40,608 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:28:40,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.92ms. Allocated memory is still 153.1MB. Free memory was 112.8MB in the beginning and 102.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:28:40,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.03ms. Allocated memory is still 153.1MB. Free memory was 102.3MB in the beginning and 100.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:28:40,609 INFO L158 Benchmark]: Boogie Preprocessor took 15.28ms. Allocated memory is still 153.1MB. Free memory was 100.8MB in the beginning and 99.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:28:40,609 INFO L158 Benchmark]: RCFGBuilder took 215.89ms. Allocated memory is still 153.1MB. Free memory was 99.7MB in the beginning and 89.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:28:40,609 INFO L158 Benchmark]: BuchiAutomizer took 8759.83ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 89.2MB in the beginning and 105.5MB in the end (delta: -16.3MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-12-13 19:28:40,609 INFO L158 Benchmark]: Witness Printer took 2.41ms. Allocated memory is still 184.5MB. Free memory is still 105.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:28:40,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.92ms. Allocated memory is still 153.1MB. Free memory was 112.8MB in the beginning and 102.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.03ms. Allocated memory is still 153.1MB. Free memory was 102.3MB in the beginning and 100.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.28ms. Allocated memory is still 153.1MB. Free memory was 100.8MB in the beginning and 99.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 215.89ms. Allocated memory is still 153.1MB. Free memory was 99.7MB in the beginning and 89.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 8759.83ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 89.2MB in the beginning and 105.5MB in the end (delta: -16.3MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 2.41ms. Allocated memory is still 184.5MB. Free memory is still 105.5MB. 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 13 terminating modules (5 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + n and consists of 7 locations. One deterministic module has affine ranking function -1 * i + 1 and consists of 8 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One deterministic module has affine ranking function -2 * k + 4 * n + 2 * i + 1 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.7s and 10 iterations. TraceHistogramMax:3. Analysis of lassos took 7.2s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 220 StatesRemovedByMinimization, 10 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 [6, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 5/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 329 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 317 mSDsluCounter, 448 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 494 IncrementalHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 249 mSDtfsCounter, 494 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital34 mio100 ax100 hnf100 lsp92 ukn98 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf134 smp95 tf104 neg97 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 31ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.4s 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 19:28:40,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-12-13 19:28:40,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:41,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:41,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cbd2d1e-02c1-4f47-b579-819cacf41f48/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