./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:35:52,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:35:52,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:35:52,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:35:52,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:35:52,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:35:52,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:35:52,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:35:52,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:35:52,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:35:52,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:35:52,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:35:52,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:35:52,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:35:52,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:35:52,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:35:52,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:35:52,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:35:52,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:35:52,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:35:52,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:35:52,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:35:52,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:35:52,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:35:52,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:35:52,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:35:52,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:35:52,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:35:52,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:35:52,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:35:52,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:35:52,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:35:52,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:35:52,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:35:52,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:35:52,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:35:52,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:35:52,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:35:52,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:35:52,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:35:52,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:35:52,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:35:52,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:35:52,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:35:52,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:35:52,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:35:52,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:35:52,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:35:52,419 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:35:52,420 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:35:52,420 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:35:52,420 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:35:52,420 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:35:52,421 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:35:52,421 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:35:52,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:35:52,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:35:52,422 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:35:52,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:35:52,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:35:52,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:35:52,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:35:52,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:35:52,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:35:52,424 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:35:52,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:35:52,425 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:35:52,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:35:52,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:35:52,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:35:52,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:35:52,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:35:52,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:35:52,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:35:52,428 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:35:52,429 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_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc [2021-10-28 23:35:52,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:35:52,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:35:52,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:35:52,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:35:52,778 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:35:52,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-invgen/nested6.i [2021-10-28 23:35:52,862 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/data/0e2f4cf92/e6580ecc9a8442a5a4536c0bc09dd5aa/FLAG48008ab5f [2021-10-28 23:35:53,400 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:35:53,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/sv-benchmarks/c/loop-invgen/nested6.i [2021-10-28 23:35:53,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/data/0e2f4cf92/e6580ecc9a8442a5a4536c0bc09dd5aa/FLAG48008ab5f [2021-10-28 23:35:53,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/data/0e2f4cf92/e6580ecc9a8442a5a4536c0bc09dd5aa [2021-10-28 23:35:53,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:35:53,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:35:53,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:35:53,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:35:53,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:35:53,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:35:53" (1/1) ... [2021-10-28 23:35:53,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@150cb861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:53, skipping insertion in model container [2021-10-28 23:35:53,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:35:53" (1/1) ... [2021-10-28 23:35:53,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:35:53,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:35:54,039 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-10-28 23:35:54,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:35:54,078 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:35:54,093 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-10-28 23:35:54,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:35:54,123 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:35:54,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54 WrapperNode [2021-10-28 23:35:54,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:35:54,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:35:54,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:35:54,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:35:54,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:35:54,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:35:54,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:35:54,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:35:54,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:35:54,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:35:54,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:35:54,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:35:54,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (1/1) ... [2021-10-28 23:35:54,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:54,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:54,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:54,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:35:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:35:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:35:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:35:54,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:35:54,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:35:54,556 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-28 23:35:54,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:35:54 BoogieIcfgContainer [2021-10-28 23:35:54,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:35:54,560 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:35:54,561 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:35:54,565 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:35:54,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:35:54,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:35:53" (1/3) ... [2021-10-28 23:35:54,568 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f71eeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:35:54, skipping insertion in model container [2021-10-28 23:35:54,568 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:35:54,569 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:35:54" (2/3) ... [2021-10-28 23:35:54,569 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f71eeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:35:54, skipping insertion in model container [2021-10-28 23:35:54,569 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:35:54,570 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:35:54" (3/3) ... [2021-10-28 23:35:54,571 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested6.i [2021-10-28 23:35:54,629 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:35:54,629 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:35:54,630 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:35:54,630 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:35:54,630 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:35:54,630 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:35:54,631 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:35:54,631 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:35:54,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:54,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 23:35:54,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:35:54,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:35:54,681 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:35:54,682 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:35:54,682 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:35:54,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:54,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 23:35:54,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:35:54,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:35:54,687 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:35:54,687 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:35:54,695 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 12#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet7, main_#t~post8, main_#t~post6, main_#t~post5, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 20#L28true assume !!(main_~n~0 < 1000000); 9#L29true assume main_~k~0 == main_~n~0; 10#L29-1true main_~i~0 := 0; 22#L33-3true [2021-10-28 23:35:54,696 INFO L793 eck$LassoCheckResult]: Loop: 22#L33-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 13#L34-2true assume !true; 11#L33-2true main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 22#L33-3true [2021-10-28 23:35:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 1 times [2021-10-28 23:35:54,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:54,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970860218] [2021-10-28 23:35:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:54,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:54,832 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:54,886 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash 53495, now seen corresponding path program 1 times [2021-10-28 23:35:54,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:54,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713408253] [2021-10-28 23:35:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:54,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:54,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:54,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713408253] [2021-10-28 23:35:54,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713408253] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:54,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:54,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:35:54,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827817835] [2021-10-28 23:35:54,995 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:35:54,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:35:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:35:55,021 INFO L87 Difference]: Start difference. First operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:35:55,031 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-10-28 23:35:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:35:55,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2021-10-28 23:35:55,037 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 23:35:55,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 19 transitions. [2021-10-28 23:35:55,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 23:35:55,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-28 23:35:55,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2021-10-28 23:35:55,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:35:55,047 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-28 23:35:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2021-10-28 23:35:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-28 23:35:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-28 23:35:55,081 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-28 23:35:55,081 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-28 23:35:55,082 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:35:55,082 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2021-10-28 23:35:55,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 23:35:55,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:35:55,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:35:55,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:35:55,087 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:35:55,087 INFO L791 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 55#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet7, main_#t~post8, main_#t~post6, main_#t~post5, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 62#L28 assume !!(main_~n~0 < 1000000); 58#L29 assume main_~k~0 == main_~n~0; 59#L29-1 main_~i~0 := 0; 60#L33-3 [2021-10-28 23:35:55,088 INFO L793 eck$LassoCheckResult]: Loop: 60#L33-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 63#L34-2 assume !(main_~j~0 < main_~n~0); 61#L33-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 60#L33-3 [2021-10-28 23:35:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:55,102 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 2 times [2021-10-28 23:35:55,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:55,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268331485] [2021-10-28 23:35:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:55,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:55,125 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:55,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 51883, now seen corresponding path program 1 times [2021-10-28 23:35:55,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:55,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162189607] [2021-10-28 23:35:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:55,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:55,216 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:55,251 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 177631332, now seen corresponding path program 1 times [2021-10-28 23:35:55,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:55,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274866167] [2021-10-28 23:35:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:55,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:55,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:55,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274866167] [2021-10-28 23:35:55,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274866167] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:55,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:55,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:35:55,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962015143] [2021-10-28 23:35:55,466 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:35:55,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:35:55,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:35:55,468 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:35:55,468 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:35:55,468 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:55,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:35:55,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:35:55,469 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2021-10-28 23:35:55,469 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:35:55,469 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:35:55,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:55,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:55,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:35:55,567 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:35:55,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:55,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:55,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:55,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:35:55,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:55,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:35:55,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:35:55,610 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:35:55,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:55,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:55,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:55,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:55,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:35:55,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:55,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:35:55,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:55,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:55,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:55,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:35:55,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:55,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:35:56,030 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:35:56,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:56,037 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:35:56,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:35:56,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:35:56,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:35:56,037 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:35:56,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:56,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:35:56,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:35:56,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2021-10-28 23:35:56,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:35:56,038 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:35:56,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:56,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:56,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:35:56,128 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:35:56,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:56,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:56,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:35:56,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:35:56,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:35:56,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:35:56,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:35:56,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:35:56,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:35:56,167 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:35:56,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:35:56,180 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:35:56,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:56,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:56,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:56,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:56,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:35:56,208 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:35:56,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:35:56,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:35:56,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:35:56,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:35:56,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:35:56,221 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:35:56,221 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:35:56,250 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:35:56,258 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:35:56,258 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:35:56,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:56,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:56,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:56,275 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:35:56,276 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:35:56,276 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:35:56,277 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:35:56,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:35:56,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:56,325 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:35:56,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:56,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:35:56,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:56,444 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:35:56,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:56,516 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:35:56,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,593 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 36 transitions. Complement of second has 4 states. [2021-10-28 23:35:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:35:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 19 transitions. [2021-10-28 23:35:56,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-28 23:35:56,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:56,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-28 23:35:56,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:56,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 5 letters. Loop has 6 letters. [2021-10-28 23:35:56,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:56,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2021-10-28 23:35:56,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:35:56,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 34 transitions. [2021-10-28 23:35:56,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-10-28 23:35:56,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-28 23:35:56,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2021-10-28 23:35:56,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:35:56,618 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-28 23:35:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2021-10-28 23:35:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-28 23:35:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-10-28 23:35:56,626 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-28 23:35:56,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:35:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:35:56,628 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:35:56,678 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2021-10-28 23:35:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:35:56,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2021-10-28 23:35:56,684 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-28 23:35:56,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 47 states and 59 transitions. [2021-10-28 23:35:56,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-28 23:35:56,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-28 23:35:56,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 59 transitions. [2021-10-28 23:35:56,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:35:56,687 INFO L681 BuchiCegarLoop]: Abstraction has 47 states and 59 transitions. [2021-10-28 23:35:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 59 transitions. [2021-10-28 23:35:56,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-28 23:35:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-10-28 23:35:56,694 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-28 23:35:56,695 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-28 23:35:56,695 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:35:56,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2021-10-28 23:35:56,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:35:56,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:35:56,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:35:56,699 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:35:56,699 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:35:56,699 INFO L791 eck$LassoCheckResult]: Stem: 217#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 218#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet7, main_#t~post8, main_#t~post6, main_#t~post5, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume !!(main_~n~0 < 1000000); 223#L29 assume main_~k~0 == main_~n~0; 224#L29-1 main_~i~0 := 0; 225#L33-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 229#L34-2 [2021-10-28 23:35:56,700 INFO L793 eck$LassoCheckResult]: Loop: 229#L34-2 assume !!(main_~j~0 < main_~n~0); 230#L35 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~k~0 := main_~j~0; 236#L36-2 assume !(main_~k~0 < main_~n~0); 233#L18-8 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 229#L34-2 [2021-10-28 23:35:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,700 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 1 times [2021-10-28 23:35:56,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:56,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235646121] [2021-10-28 23:35:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:56,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:56,735 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:56,761 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1850251, now seen corresponding path program 1 times [2021-10-28 23:35:56,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:56,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803995212] [2021-10-28 23:35:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:56,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:56,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:56,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803995212] [2021-10-28 23:35:56,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803995212] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:56,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:56,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:35:56,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36084430] [2021-10-28 23:35:56,808 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:35:56,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:35:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:35:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:35:56,809 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:35:56,865 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-10-28 23:35:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:35:56,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2021-10-28 23:35:56,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:35:56,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 36 transitions. [2021-10-28 23:35:56,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 23:35:56,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-28 23:35:56,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 36 transitions. [2021-10-28 23:35:56,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:35:56,868 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-10-28 23:35:56,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 36 transitions. [2021-10-28 23:35:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-28 23:35:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-10-28 23:35:56,871 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-10-28 23:35:56,871 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-10-28 23:35:56,872 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:35:56,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 36 transitions. [2021-10-28 23:35:56,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:35:56,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:35:56,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:35:56,873 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:35:56,873 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:35:56,874 INFO L791 eck$LassoCheckResult]: Stem: 282#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 283#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet7, main_#t~post8, main_#t~post6, main_#t~post5, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 293#L28 assume !!(main_~n~0 < 1000000); 288#L29 assume main_~k~0 == main_~n~0; 289#L29-1 main_~i~0 := 0; 290#L33-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 294#L34-2 [2021-10-28 23:35:56,874 INFO L793 eck$LassoCheckResult]: Loop: 294#L34-2 assume !!(main_~j~0 < main_~n~0); 295#L35 assume !(0 != main_#t~nondet7);havoc main_#t~nondet7;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 309#L18-3 assume !(0 == __VERIFIER_assert_~cond); 284#L18-5 __VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 285#L18-6 assume !(0 == __VERIFIER_assert_~cond); 298#L18-8 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 294#L34-2 [2021-10-28 23:35:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 2 times [2021-10-28 23:35:56,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:56,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365277693] [2021-10-28 23:35:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:56,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:56,901 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:56,914 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1800992291, now seen corresponding path program 1 times [2021-10-28 23:35:56,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:56,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181325272] [2021-10-28 23:35:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:56,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:56,945 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:56,970 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash 25632912, now seen corresponding path program 1 times [2021-10-28 23:35:56,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:56,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200759818] [2021-10-28 23:35:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:56,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:57,036 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:57,075 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:57,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:57,202 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:35:57,202 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:35:57,202 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:35:57,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:35:57,203 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:35:57,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:57,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:35:57,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:35:57,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2021-10-28 23:35:57,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:35:57,204 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:35:57,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,314 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:35:57,314 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:35:57,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:57,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:57,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:57,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:35:57,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:57,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:35:57,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:35:57,346 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:35:57,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 23:35:57,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:57,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:57,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:57,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:35:57,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:35:57,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:57,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:57,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:57,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:57,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:57,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:35:57,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:35:57,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:57,855 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:35:57,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:57,859 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:35:57,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:35:57,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:35:57,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:35:57,859 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:35:57,859 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:57,859 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:35:57,859 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:35:57,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2021-10-28 23:35:57,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:35:57,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:35:57,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:57,957 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:35:57,957 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:35:57,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:57,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:57,959 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:57,968 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:35:57,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:35:57,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:35:57,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:35:57,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:35:57,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:35:57,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:35:57,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:35:57,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:35:57,990 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:35:58,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:58,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:58,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:58,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:58,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:35:58,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:35:58,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:35:58,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:35:58,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:35:58,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:35:58,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:35:58,061 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:35:58,061 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:35:58,082 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:35:58,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:35:58,096 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:35:58,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:58,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:58,097 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:58,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:35:58,151 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:35:58,151 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:35:58,151 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:35:58,151 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-10-28 23:35:58,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:58,211 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:35:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:58,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:35:58,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:58,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:35:58,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:58,392 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:35:58,393 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:58,426 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 72 states and 91 transitions. Complement of second has 7 states. [2021-10-28 23:35:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:35:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-10-28 23:35:58,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 6 letters. [2021-10-28 23:35:58,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:58,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 12 letters. Loop has 6 letters. [2021-10-28 23:35:58,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:58,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 12 letters. [2021-10-28 23:35:58,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:58,431 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 91 transitions. [2021-10-28 23:35:58,434 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-10-28 23:35:58,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 57 states and 72 transitions. [2021-10-28 23:35:58,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-28 23:35:58,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-10-28 23:35:58,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 72 transitions. [2021-10-28 23:35:58,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:35:58,436 INFO L681 BuchiCegarLoop]: Abstraction has 57 states and 72 transitions. [2021-10-28 23:35:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 72 transitions. [2021-10-28 23:35:58,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2021-10-28 23:35:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 44 states have (on average 1.25) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2021-10-28 23:35:58,441 INFO L704 BuchiCegarLoop]: Abstraction has 44 states and 55 transitions. [2021-10-28 23:35:58,441 INFO L587 BuchiCegarLoop]: Abstraction has 44 states and 55 transitions. [2021-10-28 23:35:58,441 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:35:58,441 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 55 transitions. [2021-10-28 23:35:58,447 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-10-28 23:35:58,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:35:58,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:35:58,447 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:58,448 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:35:58,450 INFO L791 eck$LassoCheckResult]: Stem: 443#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 444#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet7, main_#t~post8, main_#t~post6, main_#t~post5, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 454#L28 assume !!(main_~n~0 < 1000000); 449#L29 assume main_~k~0 == main_~n~0; 450#L29-1 main_~i~0 := 0; 451#L33-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 459#L34-2 assume !!(main_~j~0 < main_~n~0); 461#L35 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~k~0 := main_~j~0; 464#L36-2 [2021-10-28 23:35:58,451 INFO L793 eck$LassoCheckResult]: Loop: 464#L36-2 assume !!(main_~k~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 465#L18 assume !(0 == __VERIFIER_assert_~cond); 468#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 464#L36-2 [2021-10-28 23:35:58,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash 177631345, now seen corresponding path program 1 times [2021-10-28 23:35:58,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:58,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214943025] [2021-10-28 23:35:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:58,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:58,475 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:58,509 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:58,510 INFO L85 PathProgramCache]: Analyzing trace with hash 70732, now seen corresponding path program 1 times [2021-10-28 23:35:58,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:58,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641214562] [2021-10-28 23:35:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:58,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:58,518 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:58,537 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash 415731164, now seen corresponding path program 1 times [2021-10-28 23:35:58,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:58,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315456812] [2021-10-28 23:35:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:58,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:58,565 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:58,585 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:58,682 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:35:58,683 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:35:58,683 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:35:58,683 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:35:58,683 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:35:58,683 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:58,683 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:35:58,683 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:35:58,683 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2021-10-28 23:35:58,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:35:58,684 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:35:58,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:58,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:58,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:58,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:35:58,749 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:35:58,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:58,755 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:58,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:35:58,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:58,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:58,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:58,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:58,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:35:58,839 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:35:58,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-28 23:35:58,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:35:58,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:59,086 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:35:59,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:59,090 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:35:59,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:35:59,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:35:59,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:35:59,090 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:35:59,090 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:59,090 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:35:59,090 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:35:59,090 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2021-10-28 23:35:59,090 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:35:59,090 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:35:59,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:59,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:59,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:59,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:35:59,170 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:35:59,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:59,171 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:59,183 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:35:59,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:35:59,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:35:59,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:35:59,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:35:59,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:35:59,196 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:35:59,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:35:59,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:35:59,218 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:35:59,227 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:35:59,227 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:35:59,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:59,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:59,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:59,231 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:35:59,231 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:35:59,231 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:35:59,232 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-10-28 23:35:59,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:35:59,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:59,261 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:35:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:59,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:35:59,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:59,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:35:59,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:59,359 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:35:59,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 44 states and 55 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,394 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 44 states and 55 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 133 states and 168 transitions. Complement of second has 7 states. [2021-10-28 23:35:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:35:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2021-10-28 23:35:59,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-28 23:35:59,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:59,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 11 letters. Loop has 3 letters. [2021-10-28 23:35:59,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:59,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-28 23:35:59,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:35:59,397 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 133 states and 168 transitions. [2021-10-28 23:35:59,400 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 25 [2021-10-28 23:35:59,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 133 states to 98 states and 122 transitions. [2021-10-28 23:35:59,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-10-28 23:35:59,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 23:35:59,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 122 transitions. [2021-10-28 23:35:59,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:35:59,403 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-10-28 23:35:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 122 transitions. [2021-10-28 23:35:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2021-10-28 23:35:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:35:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-10-28 23:35:59,410 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-28 23:35:59,410 INFO L587 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-28 23:35:59,410 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:35:59,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 84 transitions. [2021-10-28 23:35:59,412 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 23:35:59,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:35:59,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:35:59,412 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:59,412 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:35:59,413 INFO L791 eck$LassoCheckResult]: Stem: 677#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 678#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet7, main_#t~post8, main_#t~post6, main_#t~post5, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 688#L28 assume !!(main_~n~0 < 1000000); 683#L29 assume main_~k~0 == main_~n~0; 684#L29-1 main_~i~0 := 0; 685#L33-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 689#L34-2 assume !!(main_~j~0 < main_~n~0); 690#L35 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~k~0 := main_~j~0; 731#L36-2 assume !!(main_~k~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 740#L18 assume !(0 == __VERIFIER_assert_~cond); 741#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 739#L36-2 assume !(main_~k~0 < main_~n~0); 707#L18-8 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 721#L34-2 assume !!(main_~j~0 < main_~n~0); 717#L35 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~k~0 := main_~j~0; 705#L36-2 [2021-10-28 23:35:59,413 INFO L793 eck$LassoCheckResult]: Loop: 705#L36-2 assume !!(main_~k~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 744#L18 assume !(0 == __VERIFIER_assert_~cond); 704#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 705#L36-2 [2021-10-28 23:35:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash 745022182, now seen corresponding path program 1 times [2021-10-28 23:35:59,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:59,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668332894] [2021-10-28 23:35:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:59,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:59,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:35:59,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668332894] [2021-10-28 23:35:59,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668332894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:35:59,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550228657] [2021-10-28 23:35:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:59,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:35:59,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:59,491 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:35:59,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 23:35:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:59,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:35:59,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:59,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550228657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:35:59,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:35:59,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:35:59,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938979572] [2021-10-28 23:35:59,648 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:35:59,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash 70732, now seen corresponding path program 2 times [2021-10-28 23:35:59,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:35:59,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257938192] [2021-10-28 23:35:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:59,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:35:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:59,666 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:35:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:35:59,678 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:59,743 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:35:59,743 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:35:59,743 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:35:59,743 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:35:59,743 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:35:59,743 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:59,743 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:35:59,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:35:59,744 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2021-10-28 23:35:59,744 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:35:59,744 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:35:59,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:59,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:59,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:35:59,804 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:35:59,804 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:35:59,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:59,807 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:59,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:35:59,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:59,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:35:59,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:59,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:35:59,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:35:59,886 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:35:59,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:35:59,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:35:59,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:36:00,192 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:36:00,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:00,200 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:36:00,200 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:36:00,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:36:00,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:36:00,201 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:36:00,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:00,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:36:00,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:36:00,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2021-10-28 23:36:00,201 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:36:00,201 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:36:00,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:00,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:00,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:00,261 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:36:00,261 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:36:00,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:00,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:00,263 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:00,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:00,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:00,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:36:00,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:00,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:00,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:00,287 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:36:00,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:36:00,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:36:00,306 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:36:00,310 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:36:00,310 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:36:00,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:00,313 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:00,318 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:36:00,318 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:36:00,319 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:36:00,319 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2021-10-28 23:36:00,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:36:00,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:00,367 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:36:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:00,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:36:00,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:00,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:36:00,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:00,506 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:36:00,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,551 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 126 states and 158 transitions. Complement of second has 7 states. [2021-10-28 23:36:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:36:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2021-10-28 23:36:00,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 15 letters. Loop has 3 letters. [2021-10-28 23:36:00,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:00,553 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:36:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:00,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:36:00,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:00,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:36:00,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:00,677 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:36:00,677 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,716 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 126 states and 158 transitions. Complement of second has 7 states. [2021-10-28 23:36:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:36:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2021-10-28 23:36:00,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 28 transitions. Stem has 15 letters. Loop has 3 letters. [2021-10-28 23:36:00,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:00,718 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:36:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:00,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:36:00,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:00,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:00,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:36:00,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:00,885 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:36:00,885 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:00,941 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 102 states and 129 transitions. Complement of second has 6 states. [2021-10-28 23:36:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:36:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2021-10-28 23:36:00,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 15 letters. Loop has 3 letters. [2021-10-28 23:36:00,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:00,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 18 letters. Loop has 3 letters. [2021-10-28 23:36:00,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:00,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 15 letters. Loop has 6 letters. [2021-10-28 23:36:00,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:00,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 129 transitions. [2021-10-28 23:36:00,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:36:00,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 48 states and 59 transitions. [2021-10-28 23:36:00,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 23:36:00,950 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-28 23:36:00,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 59 transitions. [2021-10-28 23:36:00,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:36:00,951 INFO L681 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2021-10-28 23:36:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 59 transitions. [2021-10-28 23:36:00,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 29. [2021-10-28 23:36:00,954 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) [2021-10-28 23:36:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-10-28 23:36:00,955 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-28 23:36:00,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:36:00,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:36:00,956 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:01,028 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-10-28 23:36:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:36:01,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 53 transitions. [2021-10-28 23:36:01,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-10-28 23:36:01,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 43 states and 51 transitions. [2021-10-28 23:36:01,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-28 23:36:01,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-28 23:36:01,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 51 transitions. [2021-10-28 23:36:01,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:36:01,031 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 51 transitions. [2021-10-28 23:36:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 51 transitions. [2021-10-28 23:36:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2021-10-28 23:36:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 36 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-10-28 23:36:01,035 INFO L704 BuchiCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-10-28 23:36:01,035 INFO L587 BuchiCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-10-28 23:36:01,036 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:36:01,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 44 transitions. [2021-10-28 23:36:01,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 23:36:01,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:36:01,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:36:01,037 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:01,037 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:36:01,037 INFO L791 eck$LassoCheckResult]: Stem: 1424#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 1425#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet7, main_#t~post8, main_#t~post6, main_#t~post5, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 1435#L28 assume !!(main_~n~0 < 1000000); 1430#L29 assume main_~k~0 == main_~n~0; 1431#L29-1 main_~i~0 := 0; 1432#L33-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1449#L34-2 assume !!(main_~j~0 < main_~n~0); 1450#L35 assume !(0 != main_#t~nondet7);havoc main_#t~nondet7;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1448#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1428#L18-5 __VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1429#L18-6 assume !(0 == __VERIFIER_assert_~cond); 1438#L18-8 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 1439#L34-2 assume !(main_~j~0 < main_~n~0); 1433#L33-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 1434#L33-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1437#L34-2 [2021-10-28 23:36:01,038 INFO L793 eck$LassoCheckResult]: Loop: 1437#L34-2 assume !!(main_~j~0 < main_~n~0); 1440#L35 assume !(0 != main_#t~nondet7);havoc main_#t~nondet7;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1447#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1426#L18-5 __VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1427#L18-6 assume !(0 == __VERIFIER_assert_~cond); 1436#L18-8 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 1437#L34-2 [2021-10-28 23:36:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -874067824, now seen corresponding path program 1 times [2021-10-28 23:36:01,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:01,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733644277] [2021-10-28 23:36:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:01,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:01,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:01,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733644277] [2021-10-28 23:36:01,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733644277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:36:01,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910804160] [2021-10-28 23:36:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:01,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:36:01,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:01,123 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:36:01,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 23:36:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:01,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:36:01,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:01,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910804160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:36:01,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:36:01,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-28 23:36:01,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258203187] [2021-10-28 23:36:01,384 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:36:01,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1800992291, now seen corresponding path program 2 times [2021-10-28 23:36:01,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:01,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994507676] [2021-10-28 23:36:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:01,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:01,392 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:01,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:01,473 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:36:01,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:36:01,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:36:01,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:36:01,474 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:36:01,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:01,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:36:01,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:36:01,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2021-10-28 23:36:01,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:36:01,475 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:36:01,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:01,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:01,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:01,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:01,549 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:36:01,549 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:36:01,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:01,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:01,555 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:01,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:36:01,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:01,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:36:01,582 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:36:01,582 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:36:01,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:01,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:01,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:01,612 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:01,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:36:01,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:36:01,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:01,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:36:01,624 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:36:01,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:01,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:01,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:01,649 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:01,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:36:01,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:36:01,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:01,661 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:36:01,661 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet7=0} Honda state: {ULTIMATE.start_main_#t~nondet7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:36:01,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:01,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:01,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:01,686 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:01,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:36:01,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:36:01,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:01,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:01,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:01,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:01,731 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:01,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:36:01,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:01,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:36:02,099 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:36:02,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-28 23:36:02,114 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:36:02,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:36:02,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:36:02,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:36:02,115 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:36:02,115 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:02,115 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:36:02,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:36:02,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2021-10-28 23:36:02,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:36:02,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:36:02,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:02,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:02,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:02,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:02,191 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:36:02,192 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:36:02,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:02,194 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:02,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:36:02,200 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:02,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:02,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:36:02,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:02,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:02,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:02,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:36:02,211 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:36:02,238 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:36:02,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:02,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:02,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:02,284 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:02,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:36:02,292 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:02,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:02,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:36:02,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:02,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:02,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:02,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:36:02,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:36:02,314 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:36:02,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:02,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:02,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:02,348 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:02,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:36:02,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:02,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:02,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:36:02,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:02,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:02,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:02,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:36:02,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:36:02,382 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:36:02,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-10-28 23:36:02,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:02,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:02,427 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:02,435 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:02,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:36:02,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:02,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:36:02,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:02,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:02,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:02,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:36:02,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:36:02,449 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:36:02,454 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:36:02,454 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:36:02,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:02,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:02,455 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:02,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:36:02,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:36:02,458 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:36:02,458 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:36:02,458 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 23:36:02,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:02,482 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:36:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:02,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:36:02,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:02,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:36:02,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:02,635 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:36:02,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 44 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,674 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 44 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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 69 states and 85 transitions. Complement of second has 7 states. [2021-10-28 23:36:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:36:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-10-28 23:36:02,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 15 letters. Loop has 6 letters. [2021-10-28 23:36:02,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:02,680 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:36:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:02,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:36:02,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:02,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:36:02,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:02,876 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:36:02,876 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 44 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:02,903 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 44 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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 69 states and 85 transitions. Complement of second has 7 states. [2021-10-28 23:36:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:36:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-10-28 23:36:02,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 15 letters. Loop has 6 letters. [2021-10-28 23:36:02,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:02,904 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:36:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:02,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:36:02,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:02,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:36:02,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:03,052 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:36:03,052 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 44 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:03,085 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 44 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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 65 states and 79 transitions. Complement of second has 6 states. [2021-10-28 23:36:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:36:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2021-10-28 23:36:03,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 15 letters. Loop has 6 letters. [2021-10-28 23:36:03,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:03,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 21 letters. Loop has 6 letters. [2021-10-28 23:36:03,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:03,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 15 letters. Loop has 12 letters. [2021-10-28 23:36:03,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:03,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 79 transitions. [2021-10-28 23:36:03,100 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:36:03,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 0 states and 0 transitions. [2021-10-28 23:36:03,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:36:03,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:36:03,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:36:03,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:03,101 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:36:03,101 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:36:03,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:36:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:36:03,102 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:03,103 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 23:36:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:36:03,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 23:36:03,103 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:36:03,104 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:36:03,104 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:36:03,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:36:03,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:36:03,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:03,104 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:36:03,104 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:36:03,104 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:36:03,104 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:36:03,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:36:03,105 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:36:03,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:36:03,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:36:03 BoogieIcfgContainer [2021-10-28 23:36:03,110 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:36:03,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:36:03,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:36:03,111 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:36:03,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:35:54" (3/4) ... [2021-10-28 23:36:03,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:36:03,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:36:03,117 INFO L168 Benchmark]: Toolchain (without parser) took 9352.91 ms. Allocated memory was 104.9 MB in the beginning and 155.2 MB in the end (delta: 50.3 MB). Free memory was 75.6 MB in the beginning and 109.1 MB in the end (delta: -33.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:03,118 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 104.9 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:03,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.37 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 75.4 MB in the beginning and 101.3 MB in the end (delta: -26.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:03,119 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.29 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 100.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:03,119 INFO L168 Benchmark]: Boogie Preprocessor took 27.09 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 98.7 MB in the end (delta: 857.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:03,120 INFO L168 Benchmark]: RCFGBuilder took 363.34 ms. Allocated memory is still 125.8 MB. Free memory was 98.7 MB in the beginning and 89.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:03,121 INFO L168 Benchmark]: BuchiAutomizer took 8549.87 ms. Allocated memory was 125.8 MB in the beginning and 155.2 MB in the end (delta: 29.4 MB). Free memory was 88.8 MB in the beginning and 110.1 MB in the end (delta: -21.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:03,121 INFO L168 Benchmark]: Witness Printer took 4.83 ms. Allocated memory is still 155.2 MB. Free memory was 110.1 MB in the beginning and 109.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:03,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 104.9 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.37 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 75.4 MB in the beginning and 101.3 MB in the end (delta: -26.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.29 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 100.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.09 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 98.7 MB in the end (delta: 857.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 363.34 ms. Allocated memory is still 125.8 MB. Free memory was 98.7 MB in the beginning and 89.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8549.87 ms. Allocated memory was 125.8 MB in the beginning and 155.2 MB in the end (delta: 29.4 MB). Free memory was 88.8 MB in the beginning and 110.1 MB in the end (delta: -21.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.83 ms. Allocated memory is still 155.2 MB. Free memory was 110.1 MB in the beginning and 109.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 3 locations. One deterministic module has affine ranking function n + -1 * j and consists of 4 locations. One deterministic module has affine ranking function n + -1 * k and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * k and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * j 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 8.4s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 6.2s. Construction of modules took 0.3s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 89 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 68 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 223 SDtfs, 266 SDslu, 91 SDs, 0 SdLazy, 250 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 51ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:36:03,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:03,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:03,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0debd405-7bc4-4d5a-8a31-643f817aadda/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...