./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:41:54,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:41:54,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:41:54,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:41:54,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:41:54,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:41:54,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:41:54,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:41:54,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:41:54,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:41:54,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:41:54,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:41:54,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:41:54,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:41:54,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:41:54,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:41:54,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:41:54,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:41:54,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:41:54,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:41:54,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:41:54,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:41:54,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:41:54,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:41:54,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:41:54,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:41:54,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:41:54,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:41:54,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:41:54,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:41:54,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:41:54,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:41:54,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:41:54,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:41:54,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:41:54,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:41:54,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:41:54,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:41:54,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:41:54,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:41:54,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:41:54,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 10:41:54,339 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:41:54,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:41:54,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:41:54,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:41:54,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:41:54,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:41:54,342 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:41:54,342 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 10:41:54,342 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 10:41:54,342 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 10:41:54,343 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 10:41:54,343 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 10:41:54,344 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 10:41:54,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:41:54,344 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:41:54,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:41:54,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:41:54,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:41:54,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:41:54,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 10:41:54,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 10:41:54,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 10:41:54,345 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:41:54,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:41:54,346 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 10:41:54,346 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:41:54,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 10:41:54,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:41:54,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:41:54,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:41:54,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:41:54,348 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 10:41:54,348 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_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2022-11-20 10:41:54,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:41:54,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:41:54,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:41:54,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:41:54,707 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:41:54,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/loop-invgen/nested9.i [2022-11-20 10:41:57,707 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:41:57,951 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:41:57,954 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/sv-benchmarks/c/loop-invgen/nested9.i [2022-11-20 10:41:57,961 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/data/6e16c4a75/8f7c27f4cec541aa947ab063b3ed16af/FLAGa83b048f2 [2022-11-20 10:41:57,983 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/data/6e16c4a75/8f7c27f4cec541aa947ab063b3ed16af [2022-11-20 10:41:57,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:41:57,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:41:57,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:41:57,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:41:57,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:41:57,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:41:57" (1/1) ... [2022-11-20 10:41:57,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0c2265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:57, skipping insertion in model container [2022-11-20 10:41:57,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:41:57" (1/1) ... [2022-11-20 10:41:58,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:41:58,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:41:58,274 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2022-11-20 10:41:58,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:41:58,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:41:58,330 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2022-11-20 10:41:58,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:41:58,357 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:41:58,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58 WrapperNode [2022-11-20 10:41:58,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:41:58,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:41:58,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:41:58,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:41:58,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,398 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-11-20 10:41:58,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:41:58,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:41:58,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:41:58,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:41:58,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,437 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:41:58,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:41:58,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:41:58,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:41:58,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (1/1) ... [2022-11-20 10:41:58,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:41:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:41:58,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:41:58,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 10:41:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:41:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:41:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:41:58,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:41:58,604 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:41:58,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:41:58,741 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:41:58,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:41:58,748 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:41:58,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:41:58 BoogieIcfgContainer [2022-11-20 10:41:58,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:41:58,751 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 10:41:58,751 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 10:41:58,755 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 10:41:58,756 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:41:58,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:41:57" (1/3) ... [2022-11-20 10:41:58,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b773ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:41:58, skipping insertion in model container [2022-11-20 10:41:58,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:41:58,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:41:58" (2/3) ... [2022-11-20 10:41:58,759 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b773ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:41:58, skipping insertion in model container [2022-11-20 10:41:58,759 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:41:58,759 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:41:58" (3/3) ... [2022-11-20 10:41:58,760 INFO L332 chiAutomizerObserver]: Analyzing ICFG nested9.i [2022-11-20 10:41:58,848 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 10:41:58,849 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 10:41:58,849 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 10:41:58,849 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 10:41:58,849 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 10:41:58,849 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 10:41:58,849 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 10:41:58,850 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 10:41:58,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:41:58,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 10:41:58,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:41:58,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:41:58,879 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:58,879 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 10:41:58,879 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 10:41:58,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:41:58,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 10:41:58,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:41:58,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:41:58,882 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:58,882 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 10:41:58,890 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 4#L30true assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 7#L31true assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 9#L32true assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 6#L33true assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 5#L33-1true main_~i~0#1 := 0; 21#L34-3true [2022-11-20 10:41:58,891 INFO L750 eck$LassoCheckResult]: Loop: 21#L34-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 12#L35-3true assume !true; 11#L34-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 21#L34-3true [2022-11-20 10:41:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2022-11-20 10:41:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:58,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374710758] [2022-11-20 10:41:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:58,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:41:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:41:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:59,072 INFO L85 PathProgramCache]: Analyzing trace with hash 62657, now seen corresponding path program 1 times [2022-11-20 10:41:59,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:59,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874763228] [2022-11-20 10:41:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:59,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:41:59,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:59,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874763228] [2022-11-20 10:41:59,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874763228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:41:59,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:41:59,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:41:59,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647656029] [2022-11-20 10:41:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:41:59,147 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:41:59,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:41:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:41:59,185 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:41:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:41:59,193 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2022-11-20 10:41:59,195 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2022-11-20 10:41:59,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-20 10:41:59,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2022-11-20 10:41:59,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2022-11-20 10:41:59,208 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-11-20 10:41:59,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2022-11-20 10:41:59,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:41:59,211 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-20 10:41:59,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2022-11-20 10:41:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 10:41:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:41:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-20 10:41:59,242 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-20 10:41:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:41:59,253 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-20 10:41:59,253 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 10:41:59,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2022-11-20 10:41:59,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-20 10:41:59,258 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:41:59,258 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:41:59,259 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:59,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 10:41:59,260 INFO L748 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 49#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 50#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 51#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 55#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 54#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 52#L33-1 main_~i~0#1 := 0; 53#L34-3 [2022-11-20 10:41:59,261 INFO L750 eck$LassoCheckResult]: Loop: 53#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 60#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 59#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 53#L34-3 [2022-11-20 10:41:59,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:59,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2022-11-20 10:41:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:59,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301330520] [2022-11-20 10:41:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:41:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:41:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 61789, now seen corresponding path program 1 times [2022-11-20 10:41:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:59,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464533830] [2022-11-20 10:41:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:59,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:41:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:41:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash 763900017, now seen corresponding path program 1 times [2022-11-20 10:41:59,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:59,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551012444] [2022-11-20 10:41:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:59,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:41:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:41:59,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:41:59,444 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:41:59,454 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:41:59,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:41:59,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:41:59,455 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:41:59,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:41:59,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:41:59,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:41:59,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2022-11-20 10:41:59,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:41:59,456 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:41:59,474 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:41:59,492 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:41:59,555 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:41:59,556 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:41:59,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:41:59,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:41:59,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:41:59,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:41:59,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:41:59,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 10:41:59,595 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:41:59,595 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:41:59,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:41:59,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:41:59,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:41:59,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:41:59,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:41:59,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:41:59,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 10:41:59,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-20 10:41:59,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:41:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:41:59,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:41:59,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 10:41:59,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:41:59,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:41:59,884 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:41:59,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:41:59,892 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:41:59,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:41:59,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:41:59,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:41:59,892 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:41:59,892 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:41:59,892 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:41:59,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:41:59,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2022-11-20 10:41:59,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:41:59,893 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:41:59,895 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:41:59,917 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:41:59,978 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:41:59,983 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:41:59,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:41:59,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:41:59,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:41:59,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 10:41:59,993 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:00,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:00,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:00,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:00,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:00,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:00,009 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:00,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:00,021 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:00,027 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:42:00,027 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:42:00,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:00,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:00,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:00,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:00,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:00,061 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:00,061 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-20 10:42:00,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 10:42:00,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:00,076 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:00,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:00,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:00,147 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:42:00,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:00,225 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 10:42:00,226 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:00,358 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 40 states and 50 transitions. Complement of second has 8 states. [2022-11-20 10:42:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-11-20 10:42:00,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-20 10:42:00,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:00,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 10 letters. Loop has 3 letters. [2022-11-20 10:42:00,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:00,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 6 letters. [2022-11-20 10:42:00,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:00,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2022-11-20 10:42:00,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-11-20 10:42:00,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 48 transitions. [2022-11-20 10:42:00,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2022-11-20 10:42:00,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-20 10:42:00,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 48 transitions. [2022-11-20 10:42:00,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:00,379 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-11-20 10:42:00,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 48 transitions. [2022-11-20 10:42:00,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2022-11-20 10:42:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:00,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-11-20 10:42:00,391 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-20 10:42:00,391 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-20 10:42:00,392 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 10:42:00,392 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2022-11-20 10:42:00,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 10:42:00,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:42:00,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:42:00,393 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:00,393 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:42:00,394 INFO L748 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 161#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 162#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 163#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 167#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 166#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 164#L33-1 main_~i~0#1 := 0; 165#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 178#L35-3 [2022-11-20 10:42:00,394 INFO L750 eck$LassoCheckResult]: Loop: 178#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 168#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 170#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 184#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 174#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 175#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 178#L35-3 [2022-11-20 10:42:00,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2022-11-20 10:42:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:00,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403569258] [2022-11-20 10:42:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:00,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:00,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 1 times [2022-11-20 10:42:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:00,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82373549] [2022-11-20 10:42:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:00,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:00,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash -696653093, now seen corresponding path program 1 times [2022-11-20 10:42:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135545311] [2022-11-20 10:42:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:00,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:00,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135545311] [2022-11-20 10:42:00,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135545311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:00,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:00,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:42:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319434685] [2022-11-20 10:42:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:00,596 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:00,597 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:00,597 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:00,597 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:00,597 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:42:00,597 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:00,597 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:00,597 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:00,598 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2022-11-20 10:42:00,598 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:00,598 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:00,599 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:00,616 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:00,619 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:00,674 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:00,675 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:42:00,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:00,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:00,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:00,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:00,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:00,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 10:42:00,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:00,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:00,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:00,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:42:00,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:00,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 10:42:01,022 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:42:01,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:01,027 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:01,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:01,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:01,028 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:01,028 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:42:01,028 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:01,028 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:01,028 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:01,028 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2022-11-20 10:42:01,028 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:01,028 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:01,029 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:01,053 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:01,057 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:01,126 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:01,126 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:42:01,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:01,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:01,128 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:01,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:01,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:01,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:01,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:01,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:01,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:01,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:01,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:01,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 10:42:01,171 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:01,176 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:42:01,177 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:42:01,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:01,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:01,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:01,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 10:42:01,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:01,213 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:01,235 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:01,235 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:01,235 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-11-20 10:42:01,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-20 10:42:01,241 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:01,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:01,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:01,304 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:42:01,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:01,380 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-11-20 10:42:01,380 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:01,540 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 136 states and 169 transitions. Complement of second has 13 states. [2022-11-20 10:42:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2022-11-20 10:42:01,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 6 letters. [2022-11-20 10:42:01,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:01,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 14 letters. Loop has 6 letters. [2022-11-20 10:42:01,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:01,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 12 letters. [2022-11-20 10:42:01,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:01,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 169 transitions. [2022-11-20 10:42:01,546 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2022-11-20 10:42:01,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 115 states and 145 transitions. [2022-11-20 10:42:01,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2022-11-20 10:42:01,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2022-11-20 10:42:01,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 145 transitions. [2022-11-20 10:42:01,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:01,549 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 145 transitions. [2022-11-20 10:42:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 145 transitions. [2022-11-20 10:42:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2022-11-20 10:42:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.308641975308642) internal successors, (106), 80 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2022-11-20 10:42:01,557 INFO L240 hiAutomatonCegarLoop]: Abstraction has 81 states and 106 transitions. [2022-11-20 10:42:01,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:42:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:42:01,558 INFO L87 Difference]: Start difference. First operand 81 states and 106 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:01,573 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-20 10:42:01,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2022-11-20 10:42:01,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 10:42:01,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 36 transitions. [2022-11-20 10:42:01,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-20 10:42:01,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-20 10:42:01,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2022-11-20 10:42:01,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:01,576 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-20 10:42:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2022-11-20 10:42:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-11-20 10:42:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-20 10:42:01,579 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-20 10:42:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:42:01,580 INFO L428 stractBuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-20 10:42:01,580 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 10:42:01,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2022-11-20 10:42:01,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 10:42:01,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:42:01,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:42:01,582 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:01,582 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:42:01,582 INFO L748 eck$LassoCheckResult]: Stem: 517#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 518#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 519#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 520#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 524#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 523#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 521#L33-1 main_~i~0#1 := 0; 522#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 536#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 533#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 534#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 535#L35-3 [2022-11-20 10:42:01,582 INFO L750 eck$LassoCheckResult]: Loop: 535#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 525#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 527#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 541#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 531#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 532#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 535#L35-3 [2022-11-20 10:42:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 2 times [2022-11-20 10:42:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:01,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875125279] [2022-11-20 10:42:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:01,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:01,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:01,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 2 times [2022-11-20 10:42:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337660578] [2022-11-20 10:42:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:01,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:01,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:01,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash -669865, now seen corresponding path program 2 times [2022-11-20 10:42:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:01,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341660606] [2022-11-20 10:42:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:01,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:01,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341660606] [2022-11-20 10:42:01,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341660606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:01,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:01,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:42:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113076163] [2022-11-20 10:42:01,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:01,740 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:01,740 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:01,740 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:01,741 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:01,741 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:42:01,741 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:01,741 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:01,741 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:01,741 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2022-11-20 10:42:01,742 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:01,742 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:01,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:01,747 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:01,764 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:01,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:01,820 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:42:01,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:01,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:01,823 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:01,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:01,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:01,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 10:42:01,860 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:01,860 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:01,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-11-20 10:42:01,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:01,867 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:01,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:01,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:01,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 10:42:01,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:01,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:01,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:01,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:01,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:42:01,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:01,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 10:42:02,168 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:42:02,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:02,172 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:02,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:02,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:02,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:02,173 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:42:02,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:02,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:02,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:02,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2022-11-20 10:42:02,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:02,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:02,174 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:02,186 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:02,209 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:02,265 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:02,265 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:42:02,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:02,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:02,267 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:02,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:02,283 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:02,283 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:02,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:02,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:02,284 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:02,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:02,285 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:02,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 10:42:02,290 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:02,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:02,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:02,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 10:42:02,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:02,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:02,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:02,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:02,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:02,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:02,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:02,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:02,355 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:02,364 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:42:02,365 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:42:02,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:02,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:02,367 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:02,375 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:02,376 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:02,376 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:02,376 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-20 10:42:02,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 10:42:02,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:02,386 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:02,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:02,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:02,458 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:42:02,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:02,559 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2022-11-20 10:42:02,559 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:02,726 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 105 states and 134 transitions. Complement of second has 14 states. [2022-11-20 10:42:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 37 transitions. [2022-11-20 10:42:02,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 11 letters. Loop has 6 letters. [2022-11-20 10:42:02,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:02,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 17 letters. Loop has 6 letters. [2022-11-20 10:42:02,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:02,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 11 letters. Loop has 12 letters. [2022-11-20 10:42:02,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:02,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 134 transitions. [2022-11-20 10:42:02,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2022-11-20 10:42:02,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 103 states and 132 transitions. [2022-11-20 10:42:02,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-11-20 10:42:02,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2022-11-20 10:42:02,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 132 transitions. [2022-11-20 10:42:02,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:02,745 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 132 transitions. [2022-11-20 10:42:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 132 transitions. [2022-11-20 10:42:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 65. [2022-11-20 10:42:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.323076923076923) internal successors, (86), 64 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2022-11-20 10:42:02,749 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 86 transitions. [2022-11-20 10:42:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:42:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:42:02,750 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:02,774 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-11-20 10:42:02,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2022-11-20 10:42:02,775 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:42:02,776 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 31 states and 37 transitions. [2022-11-20 10:42:02,776 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-20 10:42:02,776 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 10:42:02,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2022-11-20 10:42:02,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:02,776 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-20 10:42:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2022-11-20 10:42:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-20 10:42:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-20 10:42:02,778 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-20 10:42:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:42:02,779 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-20 10:42:02,780 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 10:42:02,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2022-11-20 10:42:02,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-20 10:42:02,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:42:02,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:42:02,781 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:02,781 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:02,781 INFO L748 eck$LassoCheckResult]: Stem: 866#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 867#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 868#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 869#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 873#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 872#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 870#L33-1 main_~i~0#1 := 0; 871#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 883#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 884#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 896#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 882#L35-3 [2022-11-20 10:42:02,781 INFO L750 eck$LassoCheckResult]: Loop: 882#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 874#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 875#L18 assume !(0 == __VERIFIER_assert_~cond#1); 889#L18-2 assume { :end_inline___VERIFIER_assert } true; 885#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 886#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 891#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 892#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 878#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 879#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 882#L35-3 [2022-11-20 10:42:02,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 3 times [2022-11-20 10:42:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:02,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353059144] [2022-11-20 10:42:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:02,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:02,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1137044896, now seen corresponding path program 1 times [2022-11-20 10:42:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:02,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278064587] [2022-11-20 10:42:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:02,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:02,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1923390994, now seen corresponding path program 1 times [2022-11-20 10:42:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224123044] [2022-11-20 10:42:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:02,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:02,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:02,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:03,004 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:03,004 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:03,005 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:03,005 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:03,005 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:42:03,005 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,005 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:03,005 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:03,005 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2022-11-20 10:42:03,005 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:03,005 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:03,007 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,009 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,015 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,018 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,021 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,113 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:03,113 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:42:03,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,117 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:03,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:03,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 10:42:03,144 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:03,145 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,154 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:03,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:03,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 10:42:03,191 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:03,191 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:03,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,202 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:03,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:03,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 10:42:03,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:03,239 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:03,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:03,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:03,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 10:42:03,314 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:03,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:03,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-11-20 10:42:03,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,326 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-20 10:42:03,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:03,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:03,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 10:42:03,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,380 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:42:03,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:03,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 10:42:03,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:42:03,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-11-20 10:42:03,685 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:03,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:03,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:03,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:03,685 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:42:03,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:03,686 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:03,686 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2022-11-20 10:42:03,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:03,686 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:03,688 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,696 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,699 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,705 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:03,815 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:03,817 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:42:03,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,819 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:03,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 10:42:03,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:03,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:03,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:03,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:03,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:03,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:03,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:03,855 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:03,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,864 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,872 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:03,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:03,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:03,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:03,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:03,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:03,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:03,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:03,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 10:42:03,894 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:03,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,904 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,908 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:03,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:03,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:03,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:03,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:03,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:03,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:03,922 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:03,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 10:42:03,940 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:03,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,954 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 10:42:03,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:03,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:03,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:03,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:03,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:03,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:03,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:03,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:03,991 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:03,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:03,997 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:03,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 10:42:03,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:04,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:04,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:04,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:04,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:04,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:04,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:04,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:04,039 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:04,045 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:42:04,045 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:42:04,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:04,047 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:04,052 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:04,052 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:04,052 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:04,053 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-11-20 10:42:04,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 10:42:04,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:04,062 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:04,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:04,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:04,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:04,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:04,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:42:04,157 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:04,157 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:04,183 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 53 states and 65 transitions. Complement of second has 6 states. [2022-11-20 10:42:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 10:42:04,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 10 letters. [2022-11-20 10:42:04,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:04,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 21 letters. Loop has 10 letters. [2022-11-20 10:42:04,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:04,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 20 letters. [2022-11-20 10:42:04,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:04,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 65 transitions. [2022-11-20 10:42:04,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-20 10:42:04,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 40 states and 49 transitions. [2022-11-20 10:42:04,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-11-20 10:42:04,195 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-20 10:42:04,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 49 transitions. [2022-11-20 10:42:04,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:04,196 INFO L218 hiAutomatonCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-11-20 10:42:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 49 transitions. [2022-11-20 10:42:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-11-20 10:42:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-11-20 10:42:04,208 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-11-20 10:42:04,208 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-11-20 10:42:04,208 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 10:42:04,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2022-11-20 10:42:04,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-20 10:42:04,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:42:04,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:42:04,211 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:04,211 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:04,211 INFO L748 eck$LassoCheckResult]: Stem: 1035#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1036#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1037#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1038#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1042#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1041#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1039#L33-1 main_~i~0#1 := 0; 1040#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1061#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1066#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1063#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1064#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1043#L36-3 [2022-11-20 10:42:04,212 INFO L750 eck$LassoCheckResult]: Loop: 1043#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1044#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1056#L18-2 assume { :end_inline___VERIFIER_assert } true; 1052#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1053#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1058#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1049#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1043#L36-3 [2022-11-20 10:42:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 1 times [2022-11-20 10:42:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453078900] [2022-11-20 10:42:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:04,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:04,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 1 times [2022-11-20 10:42:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:04,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836732703] [2022-11-20 10:42:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:04,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:04,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash 891852308, now seen corresponding path program 2 times [2022-11-20 10:42:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:04,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882413008] [2022-11-20 10:42:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:04,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:04,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882413008] [2022-11-20 10:42:04,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882413008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:42:04,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922730478] [2022-11-20 10:42:04,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:42:04,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:42:04,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:04,399 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:42:04,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 10:42:04,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:42:04,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:42:04,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:42:04,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:04,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:04,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922730478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:04,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:42:04,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-20 10:42:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143905073] [2022-11-20 10:42:04,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:04,665 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:04,665 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:04,665 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:04,665 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:04,665 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:42:04,665 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:04,666 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:04,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:04,666 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2022-11-20 10:42:04,666 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:04,666 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:04,667 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:04,669 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:04,682 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:04,688 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:04,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:04,746 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:42:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:04,747 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:04,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:04,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:04,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 10:42:04,783 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:04,783 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:04,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:04,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:04,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:04,793 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:04,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:04,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:04,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 10:42:04,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:04,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:04,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:04,846 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:04,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:42:04,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:04,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 10:42:05,328 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:42:05,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:05,332 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:05,332 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:05,332 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:05,333 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:05,333 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:42:05,333 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,333 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:05,333 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:05,333 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2022-11-20 10:42:05,333 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:05,333 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:05,334 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:05,345 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:05,360 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:05,362 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:05,421 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:05,422 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:42:05,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:05,424 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:05,432 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:05,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:05,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:05,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:05,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:05,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:05,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:05,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:05,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 10:42:05,459 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:05,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:05,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:05,464 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:05,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:05,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:05,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:05,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:05,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:05,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:05,485 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:05,485 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:05,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 10:42:05,513 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:05,519 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:42:05,519 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:42:05,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:05,523 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:05,525 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:05,525 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:05,525 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:05,525 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-20 10:42:05,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 10:42:05,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:05,534 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:05,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:05,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:05,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:05,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:05,616 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:05,617 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:05,644 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 109 transitions. Complement of second has 7 states. [2022-11-20 10:42:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 10:42:05,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 7 letters. [2022-11-20 10:42:05,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:05,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 19 letters. Loop has 7 letters. [2022-11-20 10:42:05,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:05,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 14 letters. [2022-11-20 10:42:05,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:05,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 109 transitions. [2022-11-20 10:42:05,648 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-20 10:42:05,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 84 states and 105 transitions. [2022-11-20 10:42:05,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2022-11-20 10:42:05,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-20 10:42:05,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 105 transitions. [2022-11-20 10:42:05,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:05,650 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-11-20 10:42:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 105 transitions. [2022-11-20 10:42:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2022-11-20 10:42:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 80 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-11-20 10:42:05,655 INFO L240 hiAutomatonCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-11-20 10:42:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:42:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:42:05,656 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:05,734 INFO L93 Difference]: Finished difference Result 125 states and 154 transitions. [2022-11-20 10:42:05,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 154 transitions. [2022-11-20 10:42:05,736 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2022-11-20 10:42:05,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 107 states and 133 transitions. [2022-11-20 10:42:05,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-11-20 10:42:05,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-11-20 10:42:05,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 133 transitions. [2022-11-20 10:42:05,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:05,737 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 133 transitions. [2022-11-20 10:42:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 133 transitions. [2022-11-20 10:42:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2022-11-20 10:42:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2022-11-20 10:42:05,742 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 111 transitions. [2022-11-20 10:42:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:42:05,747 INFO L428 stractBuchiCegarLoop]: Abstraction has 87 states and 111 transitions. [2022-11-20 10:42:05,748 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 10:42:05,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 111 transitions. [2022-11-20 10:42:05,749 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-20 10:42:05,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:42:05,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:42:05,750 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:05,750 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 10:42:05,750 INFO L748 eck$LassoCheckResult]: Stem: 1567#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1568#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1569#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1570#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1574#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1573#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1571#L33-1 main_~i~0#1 := 0; 1572#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1594#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1619#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1616#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1581#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1575#L36-3 [2022-11-20 10:42:05,750 INFO L750 eck$LassoCheckResult]: Loop: 1575#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1576#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1588#L18-2 assume { :end_inline___VERIFIER_assert } true; 1585#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1575#L36-3 [2022-11-20 10:42:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:05,751 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 2 times [2022-11-20 10:42:05,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505224563] [2022-11-20 10:42:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:05,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:05,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2408202, now seen corresponding path program 1 times [2022-11-20 10:42:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:05,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206274734] [2022-11-20 10:42:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:05,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:05,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:05,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1523990718, now seen corresponding path program 1 times [2022-11-20 10:42:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:05,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801890829] [2022-11-20 10:42:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:05,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:05,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:05,857 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:05,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:05,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:05,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:05,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:42:05,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:05,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:05,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2022-11-20 10:42:05,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:05,859 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:05,859 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:05,865 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:05,867 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:05,910 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:05,910 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:42:05,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:05,911 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:05,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 10:42:05,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:05,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:05,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:05,943 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:05,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:05,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:05,954 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:05,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:05,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:05,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 10:42:05,987 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:05,987 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:05,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:05,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:05,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:05,997 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:06,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:06,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:06,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 10:42:06,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:06,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:06,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:06,040 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:06,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:42:06,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:06,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-20 10:42:08,087 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:42:08,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-20 10:42:08,091 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:08,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:08,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:08,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:08,091 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:42:08,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:08,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:08,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:08,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2022-11-20 10:42:08,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:08,091 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:08,092 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:08,098 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:08,109 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:08,148 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:08,148 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:42:08,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:08,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:08,150 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:08,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-20 10:42:08,156 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:08,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:08,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:08,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:08,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:08,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:08,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:08,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:08,178 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:08,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-11-20 10:42:08,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:08,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:08,182 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:08,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-20 10:42:08,185 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:08,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:08,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:08,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:08,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:08,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:08,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:08,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:08,199 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:08,202 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:42:08,202 INFO L444 ModelExtractionUtils]: 1 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:42:08,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:08,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:08,205 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:08,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-20 10:42:08,207 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:08,207 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:08,207 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:08,207 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~k~0#1) = 4*ULTIMATE.start_main_~n~0#1 + 2*ULTIMATE.start_main_~i~0#1 - 2*ULTIMATE.start_main_~k~0#1 + 1 Supporting invariants [] [2022-11-20 10:42:08,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:08,210 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:08,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:08,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:08,275 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:42:08,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:08,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:08,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:08,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:08,380 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 10:42:08,381 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:08,434 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 156 states and 196 transitions. Complement of second has 9 states. [2022-11-20 10:42:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-11-20 10:42:08,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2022-11-20 10:42:08,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:08,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 16 letters. Loop has 4 letters. [2022-11-20 10:42:08,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:08,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 12 letters. Loop has 8 letters. [2022-11-20 10:42:08,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:08,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2022-11-20 10:42:08,439 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-20 10:42:08,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 121 states and 150 transitions. [2022-11-20 10:42:08,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-20 10:42:08,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-20 10:42:08,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 150 transitions. [2022-11-20 10:42:08,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:08,441 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121 states and 150 transitions. [2022-11-20 10:42:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 150 transitions. [2022-11-20 10:42:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 87. [2022-11-20 10:42:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 86 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2022-11-20 10:42:08,445 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-11-20 10:42:08,445 INFO L428 stractBuchiCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-11-20 10:42:08,445 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-20 10:42:08,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 109 transitions. [2022-11-20 10:42:08,446 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-20 10:42:08,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:42:08,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:42:08,447 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:08,447 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:08,447 INFO L748 eck$LassoCheckResult]: Stem: 1886#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1887#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1888#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1889#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1893#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1892#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1890#L33-1 main_~i~0#1 := 0; 1891#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1916#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1933#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1928#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1901#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1902#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1950#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1954#L18-2 assume { :end_inline___VERIFIER_assert } true; 1952#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1949#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1946#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1944#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1932#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1927#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1924#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1922#L36-3 [2022-11-20 10:42:08,447 INFO L750 eck$LassoCheckResult]: Loop: 1922#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1920#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1911#L18-2 assume { :end_inline___VERIFIER_assert } true; 1912#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1919#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1913#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1914#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1922#L36-3 [2022-11-20 10:42:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 504421370, now seen corresponding path program 3 times [2022-11-20 10:42:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:08,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165452793] [2022-11-20 10:42:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:08,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:08,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 2 times [2022-11-20 10:42:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041388013] [2022-11-20 10:42:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:08,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:08,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1334545203, now seen corresponding path program 4 times [2022-11-20 10:42:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:08,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947945059] [2022-11-20 10:42:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:42:08,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:08,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947945059] [2022-11-20 10:42:08,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947945059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:42:08,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892904047] [2022-11-20 10:42:08,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:42:08,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:42:08,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:08,591 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:42:08,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-20 10:42:08,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:42:08,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:42:08,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:42:08,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:42:08,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:42:08,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892904047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:42:08,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:42:08,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-11-20 10:42:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546326508] [2022-11-20 10:42:08,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:08,885 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:08,886 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:08,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:08,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:08,886 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:42:08,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:08,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:08,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:08,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2022-11-20 10:42:08,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:08,887 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:08,888 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:08,890 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:08,902 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:08,908 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:08,959 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:08,959 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:42:08,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:08,960 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:08,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-20 10:42:08,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:08,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:09,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:42:09,003 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:42:09,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:09,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:09,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:09,008 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:09,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:09,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:09,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-20 10:42:09,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:09,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:09,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:09,055 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:09,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:42:09,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:09,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-20 10:42:09,590 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:42:09,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-11-20 10:42:09,593 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:09,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:09,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:09,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:09,593 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:42:09,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:09,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:09,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:09,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2022-11-20 10:42:09,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:09,594 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:09,595 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:09,605 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:09,607 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:09,620 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:09,670 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:09,670 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:42:09,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:09,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:09,671 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:09,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-20 10:42:09,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:09,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:09,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:09,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:09,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:09,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:09,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:09,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:09,699 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:09,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:09,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:09,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:09,703 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:09,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:09,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:09,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:09,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:09,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:09,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:09,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:09,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:09,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-20 10:42:09,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:09,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:09,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:09,751 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:09,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:09,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:09,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:09,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:09,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:09,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:09,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-20 10:42:09,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:09,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:09,787 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:09,802 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:42:09,802 INFO L444 ModelExtractionUtils]: 1 out of 6 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-20 10:42:09,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:09,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:09,807 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:09,811 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:09,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:09,811 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:09,811 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-20 10:42:09,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-20 10:42:09,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:09,816 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:09,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:09,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:09,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:09,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:09,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:09,908 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:09,908 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:09,934 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 127 states and 158 transitions. Complement of second has 7 states. [2022-11-20 10:42:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 10:42:09,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2022-11-20 10:42:09,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:09,936 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:42:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:09,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:09,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:09,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:09,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:10,026 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:10,026 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:10,046 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 127 states and 158 transitions. Complement of second has 7 states. [2022-11-20 10:42:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 10:42:10,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2022-11-20 10:42:10,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:10,048 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:42:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:10,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:10,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:10,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:10,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:42:10,148 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:10,148 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:10,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 145 states and 182 transitions. Complement of second has 6 states. [2022-11-20 10:42:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2022-11-20 10:42:10,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 7 letters. [2022-11-20 10:42:10,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:10,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 29 letters. Loop has 7 letters. [2022-11-20 10:42:10,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:10,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 14 letters. [2022-11-20 10:42:10,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:10,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 182 transitions. [2022-11-20 10:42:10,179 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-20 10:42:10,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 106 states and 132 transitions. [2022-11-20 10:42:10,180 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2022-11-20 10:42:10,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-20 10:42:10,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-11-20 10:42:10,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:10,180 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-11-20 10:42:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-11-20 10:42:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2022-11-20 10:42:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 66 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-11-20 10:42:10,183 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-11-20 10:42:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:42:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:42:10,184 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:10,333 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2022-11-20 10:42:10,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 144 transitions. [2022-11-20 10:42:10,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 10:42:10,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 124 states and 144 transitions. [2022-11-20 10:42:10,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-20 10:42:10,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-11-20 10:42:10,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 144 transitions. [2022-11-20 10:42:10,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:42:10,336 INFO L218 hiAutomatonCegarLoop]: Abstraction has 124 states and 144 transitions. [2022-11-20 10:42:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states and 144 transitions. [2022-11-20 10:42:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2022-11-20 10:42:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 84 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2022-11-20 10:42:10,338 INFO L240 hiAutomatonCegarLoop]: Abstraction has 85 states and 103 transitions. [2022-11-20 10:42:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:42:10,343 INFO L428 stractBuchiCegarLoop]: Abstraction has 85 states and 103 transitions. [2022-11-20 10:42:10,344 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-20 10:42:10,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 103 transitions. [2022-11-20 10:42:10,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 10:42:10,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:42:10,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:42:10,346 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:42:10,346 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 10:42:10,346 INFO L748 eck$LassoCheckResult]: Stem: 3050#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 3051#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3052#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 3053#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 3057#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 3056#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 3054#L33-1 main_~i~0#1 := 0; 3055#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3077#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3096#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3094#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3064#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3060#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3061#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3119#L18-2 assume { :end_inline___VERIFIER_assert } true; 3114#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3111#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 3105#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 3104#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3103#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3078#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3079#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3102#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3070#L18 [2022-11-20 10:42:10,346 INFO L750 eck$LassoCheckResult]: Loop: 3070#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3071#L18-2 assume { :end_inline___VERIFIER_assert } true; 3067#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3068#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3070#L18 [2022-11-20 10:42:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:10,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1542806666, now seen corresponding path program 5 times [2022-11-20 10:42:10,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:10,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704342275] [2022-11-20 10:42:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:10,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:10,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:10,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2619672, now seen corresponding path program 2 times [2022-11-20 10:42:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:10,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513511962] [2022-11-20 10:42:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:10,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:10,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1902519795, now seen corresponding path program 6 times [2022-11-20 10:42:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:10,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782445033] [2022-11-20 10:42:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:10,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:10,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:42:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:42:10,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:42:10,456 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:10,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:10,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:10,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:10,457 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:42:10,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:10,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:10,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:10,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2022-11-20 10:42:10,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:10,458 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:10,459 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:10,500 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:10,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2022-11-20 10:42:10,726 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:10,726 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:42:10,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:10,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:10,727 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:10,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:42:10,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:10,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-20 10:42:10,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:10,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:10,774 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:10,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:42:10,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:42:10,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-20 10:42:11,528 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:42:11,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:11,533 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:42:11,533 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:42:11,533 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:42:11,533 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:42:11,533 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:42:11,533 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:11,533 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:42:11,533 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:42:11,533 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2022-11-20 10:42:11,533 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:42:11,533 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:42:11,534 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:11,541 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:42:11,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:42:11,785 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:42:11,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:11,787 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:11,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-20 10:42:11,797 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:11,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:11,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:11,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:11,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:42:11,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:11,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:42:11,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:11,822 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:42:11,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:11,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:11,827 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:11,831 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:42:11,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:42:11,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:42:11,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:42:11,844 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2022-11-20 10:42:11,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:42:11,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-20 10:42:11,850 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2022-11-20 10:42:11,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:42:11,871 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:42:11,876 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:42:11,876 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:42:11,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:42:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:11,878 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:42:11,883 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:42:11,884 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:42:11,884 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:42:11,884 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-20 10:42:11,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-20 10:42:11,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:11,888 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:42:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:11,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:11,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:11,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:11,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:11,964 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:11,965 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:11,992 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 187 states and 212 transitions. Complement of second has 7 states. [2022-11-20 10:42:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 10:42:11,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2022-11-20 10:42:11,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:11,993 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:42:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:12,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:12,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:12,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:12,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:12,073 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:12,073 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:12,094 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 187 states and 212 transitions. Complement of second has 7 states. [2022-11-20 10:42:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 10:42:12,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2022-11-20 10:42:12,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:12,097 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:42:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:12,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:42:12,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:12,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:42:12,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:42:12,168 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:42:12,169 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:12,193 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 135 states and 154 transitions. Complement of second has 6 states. [2022-11-20 10:42:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:42:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:42:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2022-11-20 10:42:12,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 4 letters. [2022-11-20 10:42:12,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:12,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 27 letters. Loop has 4 letters. [2022-11-20 10:42:12,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:12,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 8 letters. [2022-11-20 10:42:12,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:42:12,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 154 transitions. [2022-11-20 10:42:12,198 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:42:12,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-11-20 10:42:12,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 10:42:12,198 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 10:42:12,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 10:42:12,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:42:12,199 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:42:12,199 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:42:12,199 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:42:12,199 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-20 10:42:12,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:42:12,199 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:42:12,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 10:42:12,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:42:12 BoogieIcfgContainer [2022-11-20 10:42:12,208 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 10:42:12,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:42:12,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:42:12,209 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:42:12,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:41:58" (3/4) ... [2022-11-20 10:42:12,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:42:12,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:42:12,213 INFO L158 Benchmark]: Toolchain (without parser) took 14225.13ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 157.8MB in the beginning and 134.1MB in the end (delta: 23.7MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2022-11-20 10:42:12,213 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:42:12,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.35ms. Allocated memory is still 192.9MB. Free memory was 157.8MB in the beginning and 156.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:42:12,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.88ms. Allocated memory is still 192.9MB. Free memory was 156.6MB in the beginning and 154.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:42:12,214 INFO L158 Benchmark]: Boogie Preprocessor took 46.16ms. Allocated memory is still 192.9MB. Free memory was 154.5MB in the beginning and 153.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:42:12,214 INFO L158 Benchmark]: RCFGBuilder took 304.53ms. Allocated memory is still 192.9MB. Free memory was 153.3MB in the beginning and 142.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:42:12,215 INFO L158 Benchmark]: BuchiAutomizer took 13456.40ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 142.0MB in the beginning and 134.1MB in the end (delta: 7.9MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. [2022-11-20 10:42:12,215 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 232.8MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:42:12,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.35ms. Allocated memory is still 192.9MB. Free memory was 157.8MB in the beginning and 156.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.88ms. Allocated memory is still 192.9MB. Free memory was 156.6MB in the beginning and 154.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.16ms. Allocated memory is still 192.9MB. Free memory was 154.5MB in the beginning and 153.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.53ms. Allocated memory is still 192.9MB. Free memory was 153.3MB in the beginning and 142.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 13456.40ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 142.0MB in the beginning and 134.1MB in the end (delta: 7.9MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 232.8MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (5 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + n and consists of 7 locations. One deterministic module has affine ranking function -1 * i + 1 and consists of 8 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One deterministic module has affine ranking function -2 * k + 4 * n + 2 * i + 1 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.4s and 10 iterations. TraceHistogramMax:3. Analysis of lassos took 10.7s. Construction of modules took 0.3s. Büchi inclusion checks took 2.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 220 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [6, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 5/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 329 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 317 mSDsluCounter, 448 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 494 IncrementalHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 249 mSDtfsCounter, 494 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital34 mio100 ax100 hnf100 lsp92 ukn98 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf134 smp95 tf104 neg97 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 58ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 10:42:12,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:12,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-11-20 10:42:12,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:12,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c871bc8-b1b2-4e00-b928-3bc152c20050/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE